E4237/E4257/E4287 Dual Channel Per-Pin Parametric Measurement Unit TEST AND MEASUREMENT PRODUCTS Description The E42X7 is designed to be a low power, low cost, small footprint solution to allow high pin count testers to support a PMU per-pin. E42X7 is a family of Dual Channel Parametric Measurement Units (PMU) designed for automated test equipment and instrumentation. Manufactured in a wide voltage Bi-CMOS process, it is a monolithic solution for a per-pin PMU. Features The E42X7 family consists of three products: • Four Quadrant Operation (FV/MI, FV/MV, FI/MV, FI/MI) • 4 Current Ranges (± 40 µA, ± 400 µA, ± 4 mA, ± 40 mA) (E4287, E4257) • 2 Current Ranges (± 40 µA and ± 4 mA) (E4237) • Wide Output Voltage Range – –3.25V to +13V @ RF pin across all ranges – –3.25V to ± 13V @ FORCE Pin (Ranges A, B, C) – –1.25V to +11V @ FORCE (Range D) • Low Power Dissipation • FV Linearity to ± 0.025% FSVR • Extremely Fast Settling Times offer reduced test times/increased tester thru-put. • Central PMU Switches for External PMU, –4.75 V to +14.5V, ± 40 mA Ranges • Switches for Pin Driver Super Voltages • Driven Guard Output (E4287) • Test Head Ground Reference • Stable with up to 300 pF Capacitive Loading with no external compensation capacitors • Switchable Compensation allows stability with up to 10 nF Capacitive Loading • 14x14 mm, 80 Pin MQFP Package (E4287) • Small, 9x9 mm, 64-Pad LPCC Package (E4237, E4257) E4287 • 16.25V I/O range • 4 current ranges up to ± 40 mA • Analog mux for providing a FLASHTM programming level • Driven guard pin E4257 • 16.25V I/O range • 4 Current ranges up to ± 40 mA • Small 9mm x 9mm footprint E4237 • 16.25VI/O range • 2 current ranges up to ± 4 mA • Low capacitance for use in relayless tester architectures Every member of the E42X7 family can drive capacitive loads of up to 300 pF with no external compensation components. A user selectable FORCE amplifier compensation switch allows users to add compensation components for stability with larger capacitive loads. Integrated voltage clamp circuitry provides a method for clamping DUT (Device Under Test) compliance voltage and protecting the DUT from damage. Applications Each channel of the E42X7 also features an on-board window comparator that can be used to determine if a measurement value is within a user defined range for go/ no-go testing. • Automated Test Equipment – Memory Testers – Logic Testers – Mixed Signal Testers – SOC Testers • Instrumentation Also included with the E42X7 are a number of integrated switches that allow the connection of a central “system” PMU to the E42X7 FORCE and SENSE pins and allow the E42X7 to provide “pull-up” or “pull-down” resistors and termination voltages for DUTs with open element outputs. Revision 5 / November 30, 2005 1 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Functional Block Diagram VA 1K Channel 0 VAOUT E4287 1K 700 SELC VC 1K VBOUT VB 1K 700 HiZ HLV LLV SELCOMP LIMIT VINP REXT (1 OF 4) (1 OF 2) RF E4287, 4257 E4237 FORCE DUT SENSE GUARD IVMAX IVMIN E4287 DUTNH COMPARE DUTNL EPMUF IVMON DUT GND EPMUS Channel 1 2005 Semtech Corp. / Rev. 5, 11/30/05 2 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4287 PIN Description [0] refers to Channel 0, [1] refers to Channel 1 Pin Name Pin # Description VINP[0:1] 50, 11 Analog voltage input which programs the output voltage or current of the PMU. FORCE[0:1] SENSE[0:1] GUARD[0:1] 59, 2 58, 3 52, 9 Analog output pin which forces current or voltage. Analog input pin which senses voltage. Driven guard output. DUTGND 66 FV/FI*[0:1], MI/MV*[0:1] 37, 24 36, 25 RS0, RS1[0:1] 45, 16, 46, 15 RF, RA, RB, RC, RD[0:1] 57, 4, 53, 8, 54, 7, 55, 6, 56, 5 IVMIN[0:1] IVMAX[0:1] 63, 78 62, 79 Analog input voltages which establish the lower and upper threshold level for the measurement comparator. DUTNH[0:1] DUTNL[0:1] 42, 19 39, 22 Digital comparator outputs that indicate the DUT measurement is less than the upper threshold (not high) and greater than the lower threshold (not low). IVMON 75 Analog voltage output that provides a real time monitor of either the measured voltage or measured current level for the selected channel. DISMON[0:1] 35, 26 Digital input which disables IVMON output. HLV[0:1], LLV[0:1] 64, 77 65, 76 Analog input voltage that establishes the upper voltage clamp level. Analog input voltage that establishes the lower voltage clamp level. HIZ[0:1] 38, 23 Digital input which places the FORCE output into high impedance. COMP1[0:1], COMP2[0:1] 51, 10 49, 12 Compensation pins that require an external capacitor connected between COMP1 and COMP2. SELCOMP[0:1] 34, 27 Digital input selects an internal or external compensation capacitor. PMU 2005 Semtech Corp. / Rev. 5, 11/30/05 Device Under Test (DUT) ground reference input to both channels. Digital inputs which determine whether the PMU is forcing voltage or forcing current, measuring current or measuring voltage. Digital inputs which select one of the four current ranges. Pins to resistors corresponding to ranges A through D. RF common pin to the resistors. 3 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4287 PIN Description (continued) [0] refers to Channel 0, [1] refers to Channel 1 Pin Name Pin # Description External PMU EPMUF 70 External PMU force input to both channels. EPMUS 71 External PMU sense input to both channels. SELIPMU[0:1] 44, 17 Digital input that switches internal PMU to FORCE/SENSE. SELEPMU[0:1] 43, 18 Digital input that switches external PMU to FORCE/SENSE. VA[0:1] 31, 30 Voltage A switch analog input. VAOUT[0:1] 69, 72 Voltage A output. VB[0:1] 32, 29 Voltage B switch analog input. VBOUT[0:1] 68, 73 Voltage B output. VC[0:1] 33, 28 Voltage C switch analog input. SELC[0:1] 47, 14 Digital inputs to select C switches. VCC[0:1] 60, 61, 1, 80 PMU positive analog power supply. SVCC 74 VEE[0:1] 40, 41, 20, 21 AGND 67 Analog ground to both channels. VDD 13 Positive digital power supply to both channels. DGND 48 Digital ground to both channels. Analog MUX Power Supplies 2005 Semtech Corp. / Rev. 5, 11/30/05 Switch positive analog power supply to both channels. Negative analog power supply. 4 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4287 PIN Description (continued) VCC[1] IVMAX[1] IVMIN[1] HLV[1] LLV[1] IVMON SVCC VBOUT[1] VAOUT[1] EPMUS EPMUF VAOUT[0] VBOUT[0] AGND DUTGND LLV[0] HLV[0] IVMIN[0] IVMAX[0] VCC[0] 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 80 Pin INT_TEP_MQFP Package (w/Internal Heat Spreader) 14mm x 14mm X 2.0mm VCC[1] 1 60 VCC[0] FORCE[1] 2 59 FORCE[0] SENSE[1] 3 58 SENSE[0] RF[1] 4 57 RF[0] RD[1] 5 56 RD[0] RC[1] 6 55 RC[0] RB[1] 7 54 RB[0] RA[1] 8 53 RA[0] GUARD[1] 9 52 GUARD[0] COMP1[1] 10 51 COMP1[0] 50 VINP[0] 49 COMP2[0] E4287AHF VINP[1] 11 COMP2[1] 12 VDD 13 48 DGND SELC[1] 14 47 SELC[0] RS1[1] 15 46 RS1[0] (Top View) 2005 Semtech Corp. / Rev. 5, 11/30/05 33 34 35 36 37 VB[0] VC[0] SELCOMP[0] DISMON[0] MI/MV*[0] FV/FI*[0] 40 32 VA[0] VEE[0] 31 VA[1] 39 30 HIZ[0] 29 VB[1] DUTNL[0] 28 VC[1] 5 38 27 SELCOMP[1] VEE[0] 26 DUTNH[0] 41 MI/MV*[1] 42 20 DISMON[1] 19 VEE[1] 25 DUTNH[1] 24 SELEPMU[0] FV/FI*[1] 43 23 18 HIZ[1] SELIPMU[0] SELEPMU[1] DUTNL[1] RS0[0] 44 22 45 17 21 16 VEE[1] RS0[1] SELIPMU[1] www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4257 PIN Description [0] refers to Channel 0, [1] refers to Channel 1 Pad Name Pad # Description VINP[0:1] 9, 40 Analog voltage input which programs the output "FORCE" voltage or current. FORCE[0:1] SENSE[0:1] 1, 48 2, 47 Analog output pin which forces current or voltage. Analog input pin which senses voltage. DUTGND 59 FV/FI*[0:1] MI/MV*[0:1] 20, 29 21, 28 Digital inputs which determine whether the PMU is forcing voltage or current. RS0[0:1] RS1[0:1] 13, 36 12, 37 Digital inputs that select one of four current ranges. RA RB, RC, RD, RF[0:1] 7, 6, 5, 4, 3, 42, 43, 44, 45, 46 IVMIN[0:1] IVMAX[0:1] 62, 51 63, 50 Analog input voltages which establish the lower and upper threshold level for the measurement comparator. DUTNH[0:1] DUTNL[0:1] 16, 33 18, 31 Digital outputs that indicate the DUT measurement is less than the upper threshold (not high) and greater than the lower threshold (not low). IVMON 54 DISMON[0:1] 22, 27 Digital input which disables IVMON output. HLV[0:1] LLV[0:1] 61, 52 60, 53 Analog voltage input that establishes the upper voltage clamp level. Analog voltage input that establishes the lower voltage clamp level. HIZ[0:1] 19, 30 Digital input which places the FORCE output into high impedance. COMP1[0:1], COMP2[0:1] 8, 41 10, 39 Compensation pins that require an external capacitor connected between COMP1 and COMP2. SELCOMP[0:1] 23, 26 Digital input selects an internal or external compensation capacitor. Internal PMU Device Under Test (DUT) ground reference input to both channels. Pins to resistors corresponding to ranges A through D. RF common pin to the resistors. Analog voltage output that provides a real time monitor of either the measured voltage or measured current level for the selected channel. External PMU EPMUF 57 External PMU force input to both channels. EPMUS 56 External PMU sense input to both channels. SELIPMU[0:1] 14, 35 Digital input that switches internal PMU to FORCE/SENSE. SELEPMU[0:1] 15, 34 Digital input that switches external PMU to FORCE/SENSE. VCC[0:1] 64, 49 PTU positive analog power supply. SVCC 55 VEE[0:1] 17, 32 AGND 58 Analog ground. VDD 38 Positive digital power supply. DGND 11 Digital ground. 24 25 Connected to Cathode of the thermal diode string. Connected to Anode of the thermal diode string. Power Supplies Switch positive analog power supply. Negative analog power supply. Thermal Diode String VC0 VC1 2005 Semtech Corp. / Rev. 5, 11/30/05 6 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4257 PIN Description (continued) VCC[1] IVMAX[1] IVMIN[1] HLV[1] LLV[1] IVMON SVCC EPMUS EPMUF AGND DUTGND LLV[0] HLV[0] IVMIN[0] IVMAX[0] VCC[0] 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 64-Pad LPCC 9mmx 9mm FORCE[1] 48 1 FORCE[0] SENSE[1] 47 2 SENSE[0] RF[1] 46 3 RF[0] RD[1] 45 4 RD[0] RC[1] 44 5 RC[0] RB[1] 43 6 RB[0] RA[1] 42 7 RA[0] COMP1[1] 41 8 COMP1[0] VINP[1] 40 9 VINP[0] COMP2[1] 39 10 COMP2[0] VDD 38 11 DGND RS1[1] 37 12 RS1[0] RS0[1] 36 13 RS0[0] SELIPMU[1] 35 14 SELIPMU[0] SELEPMU[1] 34 15 SELEPMU[0] DUTNH[1] 33 16 DUTNH[0] E4257ALP Bottom View SVCC IVMON LLV[1] HLV[1] IVMIN[1] IVMAX[1] VCC[1] 55 54 53 52 51 50 49 VEE[0] 17 EPMUS 56 DUTNL[0] 18 EPMUF 57 HIZ[0] 19 VC0 24 AGND 58 FV/FI*[0] 20 VC1 25 DUTGND 59 MI/MV*[0] 21 DISMON[1] 27 LLV[0] 60 DISMON[0] 22 MI/MV*[1] 28 HLV[0] 61 SELCOMP[0] 23 FV/FI*[1] 29 IVMIN[0] 62 SELCOMP[1] 26 HIZ[1] 30 IVMAX[0] 63 VEE[1] 32 DUTNL[1] 31 VCC[0] 64 EXPOSED THERMAL PAD (Connect to VEE) FORCE[0] 1 48 FORCE[1] SENSE[0] 2 47 SENSE[1] RF[0] 3 46 RF[1] RD[0] 4 45 RD[1] RC[0] 5 44 RC[1] RB[0] 6 43 RB[1] RA[0] 7 42 RA[1] COMP1[0] 8 41 COMP1[1] VINP[0] 9 40 VINP[1] COMP2[0] 10 39 COMP2[1] DGND 11 38 VDD RS1[0] 12 37 RS1[1] RS0[0] 13 36 RS0[1] SELIPMU[0] 14 35 SELIPMU[1] SELEPMU[0] 15 34 SELEPMU[1] DUTNH[0] 16 33 DUTNH[1] 2005 Semtech Corp. / Rev. 5, 11/30/05 E4257ALP 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 VEE[0] DUTNL[0] HIZ[0] FV/FI*[0] MI/MV*[0] DISMON[0] SELCOMP[0] VC0 VC1 SELCOMP[1] DISMON[1] MI/MV*[1] FV/FI*[1] HIZ[1] DUTNL[1] VEE[1] Top View 7 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4237 PIN Description Pad Name Pad # Description VINP[0:1] 9, 40 Analog voltage input which programs the output "FORCE" voltage or current. FORCE[0:1] SENSE[0:1] 1, 48 2, 47 Analog output pin which forces current or voltage. Analog input pin which senses voltage. DUTGND 59 FV/FI*[0:1] MI/MV*[0:1] 20, 29 21, 28 RS[0:1] 13, 36, 12, 37 RA, RC, RF[0:1] 7, 5, 3, 42, 44, 46 IVMIN[0:1] IVMAX[0:1] 62, 51 63, 50 Analog input voltages which establish the lower and upper threshold level for the measurement comparator. DUTNH[0:1] DUTNL[0:1] 16, 33 18, 31 Digital outputs that indicate the DUT measurement is less than the upper threshold (not high) and greater than the lower threshold (not low). IVMON 54 DISMON[0:1] 22, 27 Digital input which disables IVMON output. HLV[0:1] LLV[0:1] 61, 52 60, 53 Analog voltage input that establishes the upper voltage clamp level. Analog voltage input that establishes the lower voltage clamp level. HIZ[0:1] 19, 30 Digital input which places the FORCE output into high impedance. COMP1[0:1], COMP2[0:1] 8, 41 10, 39 Compensation pins that require an external capacitor connected between COMP1 and COMP2. SELCOMP[0:1] 23, 26 Digital input selects an internal or external compensation capacitor. Internal PMU Device Under Test (DUT) ground reference input to both channels. Digital inputs which determine whether the PMU is forcing voltage or current. Digital inputs that select one of two current ranges (connect together externally). Pins to resistors corresponding to ranges A and C. RF common pin to the resistors. Analog voltage output that provides a real time monitor of either the measured voltage or measured current level for the selected channel. External PMU EPMUF 57 External PMU force input to both channels. EPMUS 56 External PMU sense input to both channels. SELIPMU[0:1] 14, 35 Digital input that switches internal PMU to FORCE/SENSE. SELEPMU[0:1] 15, 34 Digital input that switches external PMU to FORCE/SENSE. VCC[0:1] 64, 49 PTU positive analog power supply. SVCC 55 VEE[0:1] 17, 32 AGND 58 Analog ground. VDD 38 Positive digital power supply. DGND 11 Digital ground. VC0 VC1 24 25 Connected to Cathode of the thermal diode string. Connected to Anode of the thermal diode string. N/C 4, 6, 43, 45 Power Supplies Switch positive analog power supply. Negative analog power supply. Thermal Diode String 2005 Semtech Corp. / Rev. 5, 11/30/05 Not connected. 8 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4237 PIN Description (continued) VCC[1] IVMAX[1] IVMIN[1] HLV[1] LLV[1] IVMON SVCC EPMUS EPMUF AGND DUTGND LLV[0] HLV[0] IVMIN[0] IVMAX[0] VCC[0] 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 64-Pad LPCC 9mmx 9mm FORCE[1] 48 1 FORCE[0] SENSE[1] 47 2 SENSE[0] RF[1] 46 3 RF[0] N/C 45 4 N/C RC[1] 44 5 RC[0] N/C 43 6 N/C RA[1] 42 7 RA[0] COMP1[1] 41 8 COMP1[0] VINP[1] 40 9 VINP[0] COMP2[1] 39 10 COMP2[0] VDD 38 11 DGND RS[1] 37 12 RS[0] RS[1] 36 13 RS[0] SELIPMU[1] 35 14 SELIPMU[0] SELEPMU[1] 34 15 SELEPMU[0] DUTNH[1] 33 16 DUTNH[0] E4237ALP Bottom View IVMAX[1] VCC[1] 50 49 VEE[0] 17 IVMIN[1] 51 DUTNL[0] 18 HLV[1] 52 HIZ[0] 19 LLV[1] 53 FV/FI*[0] 20 IVMON 54 MI/MV*[0] 21 SVCC 55 DISMON[0] 22 EPMUS 56 SELCOMP[0] 23 EPMUF 57 VC0 24 AGND 58 VC1 25 DUTGND 59 SELCOMP[1] 26 LLV[0] 60 DISMON[1] 27 HLV[0] 61 MI/MV*[1] 28 IVMIN[0] 62 FV/FI*[1] 29 HIZ[1] 30 IVMAX[0] 63 VEE[1] 32 DUTNL[1] 31 VCC[0] 64 EXPOSED THERMAL PAD (Connect to VEE) FORCE[0] 1 48 FORCE[1] SENSE[0] 2 47 SENSE[1] RF[0] 3 46 RF[1] N/C 4 45 N/C RC[0] 5 44 RC[1] N/C 6 43 N/C RA[0] 7 42 RA[1] COMP1[0] 8 41 COMP1[1] E4237ALP Top View 2005 Semtech Corp. / Rev. 5, 11/30/05 28 29 30 31 32 MI/MV*[1] FV/FI*[1] HIZ[1] DUTNL[1] VEE[1] DUTNH[1] 27 33 DISMON[1] 16 26 SELEPMU[1] DUTNH[0] SELCOMP[1] 34 25 15 VC1 SELIPMU[1] SELEPMU[0] 24 35 VC0 14 23 RS[1] SELIPMU[0] SELCOMP[0] 36 22 13 DISMON[0] RS[1] RS[0] 21 37 MI/MV*[0] 12 20 VDD RS[0] FV/FI*[0] 38 19 11 HIZ[0] COMP2[1] DGND DUTNL[0] VINP[1] 39 18 40 17 9 10 VEE[0] VINP[0] COMP2[0] 9 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Circuit Description Circuit Overview E42X7 is a family of dual channel parametric test and measurement units, each of which can: • Force Voltage/Measure Current • Force Current/Measure Voltage • Force Voltage/Measure Voltage • Force Current/Measure Current Each PMU channel can force or measure voltage over a 16.25V range and force or measure current over four distinct ranges: E4257, E4287 ± 40 µA ± 400 µA ± 4 mA ± 40 mA E4237 ± 40 µA ± 4 mA Also included with the E42X7 are a number of integrated switches that allow the device to be configured to: • Connect a central “system” PMU to the DUT through the FORCE and SENSE pins of the E42X7. • Provide a ~4.5KΩ pull-up resistor to the programmed force voltage level, which allows devices with unipolar open-element outputs (i.e., open drain) to be tested without providing a designated pull-up or pull-down on a load board. PPMU Functionality The E42X7 also features integrated voltage clamp/overvoltage detection circuitry that provides over-voltage protection to the DUT (Device Under Test) during normal operation. Short-circuit protection circuitry protects the E42X7 by limiting the maximum output current to a specified value over the full-scale current for a particular range. The E4287 features an integrated analog MUX that is intended to be used to toggle the “driver high level” supplied to a pin electronics driver between normal logic levels and a super voltage level which is suitable for programming devices that require a “third-level” such as FLASHTM. The E4287 also features a pin (per channel), GUARD, which can be used to drive the guard traces of a FORCE/ SENSE pair. By surrounding FORCE and SENSE traces with guard traces which connect to the GUARD pin, an effective method to achieve minimal leakage can be achieved. The E42X7 also includes a test head ground (DUTGND) referencing features which allow the force voltage function to be referenced to a separate ground reference other than the ground (GND) power used for the device. The trapezoid in Figure 1 describes the V/I functionality of the E42X7’s internal PMU when a DUT is connected to the FORCE or RF pins (a functional schematic of the E42X7 can be viewed in Figure 2). Output Voltage [V] VCC – 2V VCC – 4V Output Current +100% [% Full-Scale Range] –100% VEE + 4V VEE + 2V FORCE Pin, Range D (E4257, E4287) FORCE Pin, Range C (E4237) RF Pin, All Ranges FORCE Pin, Ranges A,B,C (E4257, E4287) Figure 1. PMU Functionality/Range at the FORCE and RF Pins 2005 Semtech Corp. / Rev. 5, 11/30/05 10 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) 1K VA VAOUT E4287 1K 700 SELC 1K VC VBOUT VB 1K 700 CCOMP HLV COMP1 LLV COMP2 SELCOMP HIZ VOLTAGE OR CURRENT LIMIT VINP FORCEAMP 10KΩ REXT (1 of 4) (E4257, E4287) (1 of 2) (E4237) 10KΩ FI LI FV LV RF 40Ω for E4257, E4287 400Ω for E4237 FV/FI* 40 3KΩ FORCE 1.5KΩ SELEPMU SELIPMU MI/MV* 1K SENSE 1K 1K MI 1K DUT MV GUARD DISMON E4287 1K IVMAX DUTNH DUTNL IVMIN EPMUF IVMON DUTGND EPMUS Signals common to both PMUs NOTE: Switch impedance shown for typical values. Figure 2. PMU Functionality/Range at the FORCE and RF Pins 2005 Semtech Corp. / Rev. 5, 11/30/05 11 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) Control Inputs All control inputs are CMOS compatible with characteristics as defined in the “Digital Inputs” section of the specification table. FV/FI* is a digital input which determines whether the PMU forces current or voltage, and MI/MV* is an Digital input which determines whether the PMU measures current or voltage. FV/FI* and MI/MV* are independent for each channel. SELCOMP is a digital input pin that is used to switch external capacitance in parallel with the E42X7’s internal compensation in order to stabilize the force amplifier (see Figure 1) in situations where a large capacitive loading condition exists on the FORCE pin (such as during system calibration). SELCOMP functionality is illustrated in Table 3. SELCOMP Force Amplifier Compensation 0 Internal 1 Internal + CCOMP HiZ is a digital input that is used to place the PMU’s force amp into a high impedance state. Table 1 describes the modes of operation related to these three input pins. HiZ FV/FI* MI/MV* 1 X X High Impedance 0 0 0 Force Current, Measure Voltage 0 0 1 Force Current, Measure Current 0 1 0 Force Voltage, Measure Voltage 0 1 1 Force Voltage, Measure Current Table 3. Mode of Operation SELIPMU is a digital input that is used to change the connectivity of the FORCE/SENSE pair of each channel such that the force amplifier’s output/feedback is routed directly to the FORCE/SENSE pins or through an ~4.5KΩ integrated pull-up resistance path. SELIPMU functionality is described in Table 4. Table 1. RS0 and RS1 are digital inputs to an internal analog MUX which selects an external resistor corresponding to a desired current range. The truth table for RS0 and RS1, along with the associated external resistor values and current ranges, is shown in Table 2. RS0 and RS1 are independent for each channel of the E4287 and E4257. RS0 and RS1 for each channel should be connected together externally on the E4237. SELIPMU Force Amplifier Connectivity 0 Force amplifier output can be connected to the FORCE pin through ~4.5KΩ pull-up resistance if FV/FI*=1 and HiZ=0 (see On-Chip Termination Mode section) 1 FORCE amplifier output connected to the FORCE pin through ~40Ω resistance (force amplifier amplifier controls the FORCE/SENSE node) Table 4. SELIPMU Functionality RS0 RS1 Range Current Range (Max) 0 0 A ±40 µA RA = 12.4KΩ 0 1 B ±400 µA RB = 1.24KΩ 1 1 C ±4 mA RC = 124Ω 1 0 D ±40 mA RD = 12.4Ω "Nominal" Ext. R E4257, E4287 E4257, E4287 SELEPMU is a digital input that is used to connect an external (system) PMU to FORCE/SENSE pins as may be done during calibration of the device in a typical ATE application. SELEPMU functionality is described below in Table 5. Table 2. 2005 Semtech Corp. / Rev. 5, 11/30/05 12 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) SELEPMU External PMU Connectivity DISMON MI/MV* [0] [1] [0] [1] 0 0 X X High Impedance 1 1 X X High Impedance (both channels cannot use IVMON at the same time) 0 1 1 X Measured Current, Channel 0 0 1 0 X Measured Voltage, Channel 0 1 0 X 1 Measured Current, Channel 1 1 0 X 0 Measured Voltage, Channel 1 IVMON 0 EPMUF and EPMUS pins are disconnected from the FORCE and SENSE pins. 1 EPMUF is connected to FORCE through ~40Ω of resistance, and EPMUS is connected to SENSE through ~1KΩ of resistance. Table 5. SELEPMU Functionality SELC is a digital input pin that is used to control the analog mux section of the E4287 and select between the normal logic level used in an application and the super voltage level so that the desired pin electronics driver levels are channeled through the E4287 to the pin driver. SELC functionality is described in Table 6. Table 7. IVMON Functionality FORCE/RF/SENSE SELC VAOUT VBOUT 0 VA VB 1 VC VC Table 6. Analog Mux Functionality (E4287 only) DISMON is a digital input pin that is used to select the desired PMU measurement channel that appears at IVMON, or to place the IVMON pin in a high impedance state. DISMON functionality is described in Table 7. IVMON IVMON is an analog output pin which displays the measured parameter (i.e. compliance voltage or compliance current) from the channel selected using DISMON. The relationship between DISMON, MI/MV*, and the parameter displayed at IVMON is illustrated in Table 7. FORCE is an analog output pin through which a programmed voltage or current can be applied to the DUT. SENSE is a high impedance analog input that is also connected to the DUT and provides feedback for the Force amplifier (see Figure 1) in “force voltage” mode and measures DUT compliance voltage measurement in the “measure voltage” mode. RF is an analog output pin through which a programmed voltage or current can be supplied to the DUT. Since there is no disconnect switch between the FORCE amplified output and the RF pin, using the RF pin as the PMU output offers extended output voltage capability and full-scale current (note that on-chip termination mode only works when using the FORCE pin). Force Voltage (FV) Mode In the FV mode (FV/FI* = 1), the force amplifier (see Figure 2) is configured as a unity gain buffer. VINP + Force Amp. REXT FORCE/RF – + SENSE – 2005 Semtech Corp. / Rev. 5, 11/30/05 13 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) In FV mode, VINP is a high impedance analog input that sets the output voltage at the RF and/or FORCE output pins across their specified ranges as follows: REXT Output of Force Amp FORCE/RF Imeasured – + 4X VFORCE/RF = VVINP ± VVINP x specified Gain Error ± specified Offset Voltage ± specified Linearity Error Force Current (FI) Mode In the FI mode (FV/FI* = 0), the negative feedback to the force amplifier is provided from the output of a 4x gain instrument amplifier that senses the voltage across REXT. + VINP Force Amp. REXT In the MI mode, the voltage displayed at IVMON relates to the current measured through REXT as follows: VIVMON = Imeasured ± Specified Linearity Error x specified MI Gain ± specified Offset Current The nominal relationship between the current measured (Imeasured) and the voltage displayed at IVMON is depicted in Table 9. FORCE/RF – – + Measured current can be tested with window comparator or routed to IVMON 4X In FI mode, VINP is a high impedance analog input that sets the output current at the RF and/or FORCE pins across their specified compliance voltage ranges as follows: IFORCE/RF = VVINP x specified FI Gain ± specified Offset Current ± specified Linearity Error The nominal relationship between VVINP and the current at the FORCE or RF pins is displayed in Table 8. VVINP IFORCE/RF +2V 0V – 2V + Full-Scale Current 0 – Full-Scale Current VIVMON + Full-Scale Current 0 – Full-Scale Current +2V 0V – 2V Table 9. Nominal VIVMON/Imeasured Relationship Measure Voltage (MV) Mode In the MV mode (MI/MV* = 0), DUT compliance voltage is monitored using the SENSE pin, and the resulting measurement can be tested using the on-chip window comparator, or routed to the IVMON pin. SENSE Table 8. Nominal Forced Current/VVINP Relationship Imeasured + – Measured voltage can be tested with window comparator or routed to the IVMON pin. Measure Current (MI) Mode In the MI mode (MI/MV* = 1), the current through REXT is sensed using a 4x gain instrument amplifier, and the resulting measurement can be tested using the on-chip window comparator or routed to the IVMON pin. 2005 Semtech Corp. / Rev. 5, 11/30/05 14 In the MV mode, the voltage monitored at SENSE maps 1:1 with the voltage measured at IVMON as follows: VIVMON = VSENSE x specified Gain ± specified Offset Voltage ± specified Linearity Error www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) Window Comparator IVMAX The voltage clamp circuitry will constrain the DUT voltage (Vcompliance) to within a range determined by the HLV and LLV pins as follows: + Vmin ≤ Vcompliance ≤ Vmax DUTNH – To PPMU measured parameter where: Vmin = VLLV ± specified Limit Accuracy Vmax = VHLV ± specified Limit Accuracy + DUTNL IVMIN – Each channel of the E42X7 features two comparators connected in a “window comparator” topology. These comparators can be used to provide two-bit measurement range classification for go/no-go testing of devices. IVMAX and IVMIN are high impedance analog voltage inputs that establish the upper and lower thresholds for the window comparator. DUTNH and DUTNL are LVTTL outputs that indicate where a PPMU measured parameter lies in relation to the IVMAX and IVMIN thresholds and are also used to indicate when voltage clamping is taking place during measurement as shown in Table 10. Condition DUTNH DUTNL Measurement is within the range established by IVMAX and IVMIN 1 1 Measurement is above the range established by IVMAX and IVMIN 0 1 Measurement is below the range established by IVMAX and IVMIN 1 0 V/I Limiting is engaged and having an effect on the measurement 0 0 Table 10. Comparator Output Truth Table As the voltage clamp circuitry uses the FORCE pin to sense the DUT compliance voltage, applications that connect the RF pin to the DUT (see Applications Information section) must connect the FORCE pin to the RF pin for proper voltage limiting functionality. In the event of a voltage clamping condition, the DUTNL and DUTNH comparator outputs are designed to “pulldown” to logic “0” in order to indicate that the E42X7 is clamping and may be influencing any measurement that is being made (see Window Comparator section). Current Limiting The E42X7 features current limiting circuitry that limits the amount of current that the device can delivery through RF or FORCE pins. The amplitude of the short circuit current is a function of the current range selected. The maximum short-circuit current through the FORCE pin is the sum of the force amp current limit and the voltage clamp current limit if the voltage clamp is enabled and engaged. In the event that the voltage clamp is engaged, and the FORCE pin voltage exceeds the HLV or LLV pin settings by more than ~1.5V, the E42X7 will open all of the internal switches connected to the FORCE and SENSE nodes in order to protect internal PMU circuitry from damage. Voltage Clamp The integrated voltage clamp circuitry is controlled using the HLV and LLV input pins. HLV and LLV are high impedance analog voltage inputs that establish the “high” and “low” clamp thresholds. 2005 Semtech Corp. / Rev. 5, 11/30/05 15 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) On-Chip “Termination” Mode When the E42X7 is placed in FV mode and the internal PMU is not selected (SELIPMU = 0), it can be placed in “termination” mode by setting the HiZ input to logic “0”. VINP + Force Amp. REXT RF ~4.5KΩ Typ. FORCE SENSE pin to protect it from over-voltage. The internal PMU should be disabled (HiZ=1) in order to prevent it from initiating pull-up mode. REXT Selection The E42X7 is designed for the full-scale voltage drop across REXT (RA, RB, RC, RD) to be ± 0.5V. – When configured in this manner, the E42X7 can be used to provide an ~4.5KΩ “pull-up” or “pull-down” resistor at the FORCE pin to the termination voltage programmed by VVINP for testing devices with unipolar “open-element” outputs (i.e. open drain). External PMU Resistor values can be chosen that will enable the E42X7 to operate with full-scale current ranges other than those specified provided the voltage swing across REXT does not exceed ± 0.5V and the full-scale current for each range does not exceed those specified in this datasheet. Thermal Diode String The E42X7 features an internal diode string connected between the VC[0] and VC[1] pins that can be used to perform device junction temperature measurements as shown in the figure below. The E42X7 features on-chip routing and switches for connecting an external PMU to the FORCE and SENSE pins of each channel. The EPMUF pin is the “External PMU Force” input and is connected to the FORCE pin through an on-chip 40Ω, 40 mA switch. The EPMUS pin is the “External PMU Sense” input and is used to connect the external PMU’s sense line to the E42X7’s SENSE pin through an on-chip high impedance switch. VC[0] 100 µA External Current Source SELC = 0 Temperature Coefficient= –4.841mV/˚C VC[1] VC[1] – VC[0] 3 0.00162 (0.813 – Tj[˚C] = The on-chip switches used for routing the external PMU are located in a separate on-chip well that can be sepeartely powered from the core on-chip PMU circuitry using SVCC. This allows the voltage range of the external PMU to be greater than that of the core PMU without increasing core PMU power dissipation. NOTE: When using SVCC > VCC to extend the range of the external PMU, care must be taken to ensure that the RF pin voltage does NOT exceed VCC. This can be accomplished by setting SELIPMU=0 to disconnect the RF pin from FORCE, and will also disconnect the internal sense circuitry from the 2005 Semtech Corp. / Rev. 5, 11/30/05 16 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) Common Mode Error/Calibration Power Supplies In order to attain a high degree of accuracy in a typical ATE application, offset and gain errors are accounted for through software calibration. When operating the E42X7 in the Measure Current (MI) or Force Current (FI) modes, an additional source of error, common mode error, should be accounted for. Common mode error is a measure of how the common mode voltage, VCM, at the input of the current sense amplifier affects the forced or measured current values (see Figure 3). Since this error is created by internal resistors in the current sense amplifier, it is very linear in nature. The E42X7 requires four external power supply levels to operate: Using the common mode error and common mode linearity specifications, one can see that with a small number of calibration steps (see Applications note PMU-A1), the effect of this error can be significantly reduced. VOS@IVMON CM Linearity – – – – VCC (Positive Analog Supply) VEE (Negative Analog Supply) SVCC (Switch Supply) VDD (Digital Supply) VCC and VEE provide power to all of the E42X7’s internal analog circuitry except for the internal CMOS transmission gates used for the analog mux, external PMU switches, IVMON switches, and the “termination” mode switches. Power to these switches is provided by the SVCC supply. This allows for power savings in that the E42X7 can be used with rail voltages that are less than those that are being switched using the analog mux or external PMU switches. Note that in applications where SVCC > VCC, care must be taken to ensure that SELIPMU = 0 whenever the FORCE pin voltage exceeds VCC. Power Supply Sequencing CM Error = Slope 2 mV VCM@FORCE –3.5V –2 mV 9.5V In order to avoid the possibility of latch-up, the following power-up requirements must be satisfied: 1. VEE ≤ GND ≤ VDD ≤ VCC ≤ SVCC at all times 2. VEE ≤ All Analog Inputs ≤ VCC 3. GND ≤ All Digital Inputs ≤ VDD (Note: Slope may be negative) Figure 3. Graphical Representation of Common Mode Error The following sequence can be used as a guideline when powering up the E42X7: 1. 2. 3. 4. 5. 6. VEE (substrate) SVCC VCC VDD Digital Inputs Analog Inputs The three diode configuration shown in Figure 4 should be used on a once-per-board basis to prevent damage to the PMU in the event of a power supply failure and to ensure that power up requirements are not violated. 2005 Semtech Corp. / Rev. 5, 11/30/05 17 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) VCC VDD GND 1N5820 or Equivalent Schottky Diodes VEE Figure 4. Power Supply Protection Scheme Warning: It is extremely important that the voltage on any device pin does not exceed the range of VEE – 0.5 to VCC +0.5V at any time, either during power up, normal operation, or during power down. Failure to adhere to this requirement could result in latchup of the device, which could be destructive if the system power supplies are capable of supplying large amounts of current. Even if the device is not immediately destroyed, the cumulative damage caused by the stress of repeated latchup may affect device reliability. 2005 Semtech Corp. / Rev. 5, 11/30/05 18 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Application Information Required External Components Per PMU CCOMP (470 pF, Optional) COMP1 COMP2 12.4 kΩ RA 1.24 kΩ RB E4257, E4287 124 Ω RC 12.4 Ω RD E4257, E4287 RF VCC 0.1 µF VDD VEE 0.1 µF VCC VDD 0.1 µF VEE Actual decoupling capacitor values depend on the system environment. 2005 Semtech Corp. / Rev. 5, 11/30/05 19 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Application Information (continued) Per Pin PMU Connecting the PMU to a DUT Pin An application of the E42X7 is as a Per-Pin Parametric Measurement Unit (PPMU) in ATE as shown in the figure below. IVMON is connected to an external ADC to perform measurements for either MI or MV. Such measurements can also be used to calibrate the inputs to the comparator. A Device Under Test (DUT) may be connected to the PPMU either ‘locally” or ‘remotely’ to the pin electronics: Typically, IVMONs from multiple PMUs are connected to a single ADC where DISMON is used to select a PPMU. Local Pin Electronics: PPMU Pin Electronics REXT RF FORCE DCL Inductors DUT Pin F DUT Pin SENSE S F S SYSTEM PMU 4287 PPMU IVMON DISMON[0:1] Remote Pin Electronics (via Relays) Note: FORCE must be connected to RF in order to ensure voltage limiting functionality PPMU REXT Pin Electronics RF FORCE ADC DUT Pin SENSE GUARD F S SYSTEM PMU 2005 Semtech Corp. / Rev. 5, 11/30/05 20 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Application Information (continued) Use of Switches for Super Voltage (E4287 ONLY) An application of the E42X7 switches and switch matrices is to connect their PMU and an external PMU to a DUT pin and to switch a pin electronics driver’s levels to a Super Voltage as shown below. E4287 ONLY In many applications, the external PMU’s range may need to exceed that of a pin’s PMU (a pin’s PMU range may be restricted in order to save power). For example, VEE = –5.0V, VCC = +8.25V, SVCC = +14.75V would permit a PMU range of –3.25V, +6.5V, super voltage of +12V, and an external PMU range of –4.75V, +14.5V (SELIPMU = 0). SYSTEM PMU E4287 ADC F 40 SELEPMU S 1K F IVMON PPMU 40 SELIPMU S 1K DVH 1K 1000 pF SELC DVHH 1K PIN'S DRIVER 1K DVL DUT PIN 1000 pF 1K OUTPUT WAVEFORM: DVHH (Super Voltage) DVH NOTE: Switch impedance is shown for typical value 2005 Semtech Corp. / Rev. 5, 11/30/05 DVL 21 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4287 Package Information E42X7 Package: 14 x 14 x 2.0 mm, 80 Pin, Int_TEP_MQFP (with Internal Heat Spreader) PIN Descriptions 12 ˚ D D1 N A 1 e 12˚ –B– –A– E1 E DIMS. TOL. A MAX A1 2.35 0.25 Max A2 +.10/–.05 2.00 D ±.25 16.00 D1 ±.10 14.00 E ±.25 16.00 E1 ±.10 14.00 L +.15/–.10 .88 e BASIC .65 b ±.05 .30 –D– .20 RAD. TYP. 20 RAD. TYP. 6˚ ± 4˚ STANDOFF A A1 θ A2 SEATING PLANE .17 MAX 0˚ – 7˚ .25 θ b –C– ddd MAX .12 ccc MAX .10 LEAD COMPLANARITY ddd M C A–B S D S ccc C L 2005 Semtech Corp. / Rev. 5, 11/30/05 NOTES: 1) All dimensions in mm. 2) Dimensions shown are nominal with tol. as indicated. 3) L/F: EFTEC 64T copper or equivalent, 0.127 mm (.005”) or 0.15 mm (.006”) THICK. 4) Foot length “L” is measured at gage plane at 0.25 above the seating plane. 22 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4237, E4257 Package Information 64-Pad LPCC Package 9mm x 9mm TOP VIEW A D INDEX AREA (D/2 x E/2) D/2 B E/2 E 2x aaa C 2x aaa C BOTTOM VIEW D2 NxK D2/2 (DATUM B) 8 NxL (DATUM A) E2/2 E2 DETAIL B N N–1 b e 5 bbb M C A B PIN 1 (ND–1) x e 6 2005 Semtech Corp. / Rev. 5, 11/30/05 23 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS E4237, E4257 Package Information (continued) Detail B // ccc C 8 SEATING PLANE A3 A 0.08 C C A1 SIDE VIEW (DATUM A OR B) Ref. MIN NOM MAX A 0.80 0.90 1.00 A1 0 0.02 0.05 0.20 Ref. A3 L b 0.18 0.25 0.30 D 8.90 9.00 9.10 D2 7.50 7.65 7.80 E 8.90 9.00 9.10 E2 7.50 7.65 7.80 5 L1 NOTE 5 IS OPTIONAL e/2 e TERMINAL TIP 5 TERMINAL/SIDE e NOTES: 1) Dimensioning and tolerancing conform to ASME Y14.5M-1994. 2) All dimensions are in millimeters. Angles are in degrees. 3) N is the total number of terminals. 4) The terminal #1 identifier and terminal numbering convention shall conform to JESD 95-1 SPP-012. Details of terminal #1 identifier are optional, but must be located within the zone indicated. The terminal #1 identifier may be either a mold or marked feature. 5) Dimension b applies to metallized terminal and is measured between 0.25mm and 0.30mm from terminal tip. Dimension L1 is the terminal pull back from package E up to 0.1mm is acceptable. L1 is optional. 6) ND and NE refer to the number of terminals on each D and E side respectively. 7) Depopulation is possible in a symmetrical fashion. 8) Bilateral coplanarity zone applies to exposed heat slug (if any) as well as the terminals. 2005 Semtech Corp. / Rev. 5, 11/30/05 24 0.50 BSC. k 0.20 – – x b/2 – – L 0.35 0.40 0.45 N 64 ND 16 NE 16 TOLERANCES OF FORM AND POSITION aaa 0.15 bbb 0.10 ccc 0.10 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Recommended Operating Conditions Parameter Symbol Min Typ Max Units Positive Analog Power Supply (relative to GND) VCC 8 10 15 V Negative Analog Power Supply (relative to GND) VEE –5.25 –5 –4.75 V (S)VCC – VEE 12.75 15 20.25 V Positive Analog Switch Power Supply SVCC VCC 15 V Digital Power Supply (relative to GND) VDD 3.0 3.6 V Tj 25 85 ˚C Total Analog Power Supply Junction Temperature Thermal Resistance of Package (Junction to Case) E4287 Junction to Top of Package E4237, E4257 Junction to Top of Package E4237 , E4257 Junction to Exposed Heat Slug (Bottom, Center) 3.3 θJC 5 12.7 0.4 ˚C/W ˚C/W ˚C/W Absolute Maximum Ratings Parameter Symbol Min Typ Max Units 16 V Positive Power Supply (relative to GND) VCC, SVCC Negative Power Supply (relative to GND) VEE –6.5 (S)VCC – VEE –0.5 22.5 V VDD –0.5 4.5 V Digital Inputs DI –0.5 VDD + 0.5 V Analog Inputs AI VEE – .5 VCC + .5 V |HLV, LLV – VFORCE| 0 17 V Storage Temperature TS –55 +125 ˚C Junction Temperature TJ –65 +125 ˚C Soldering Temperature TSOL 260 ˚C Total Power Supply Digital Power Supply (relative to GND) Upper/Lower Voltage Limit Input to FORCE Pin Difference V Stresses above listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those “recommended” in the operational sections of this specification is not implied. Exposure to conditions above those “recommended” for extended periods may affect device reliability. 2005 Semtech Corp. / Rev. 5, 11/30/05 25 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS DC Characteristics Power Supplies Parameter Symbol Total Chip Power Supply Consumption (Quiescent, No-Load) Positive Supply Current (VCC) Negative Supply Current (VEE) Digital Supply Current (VDD) Positive Switch Supply Current (SVCC) ICC IEE IDD SICC Min Typ Max Units 10 –10 25 –25 mA mA mA mA 3.5 1 Power Supply Rejection Ratio (see plot below for AC PSRR) FV/MI Mode FORCE Pin (DC) IVMON Pin (DC) FV/MI PSRR FI/MV Mode FORCE Pin (DC) IVMON Pin (DC) FI/MV PSRR 70 70 dB dB 70 70 dB dB 50 Force Pin, FI/MV Mode PSRR [dB] 40 30 20 Force Pin, FV/MI Mode 10 IVMON Pin, FV/MI and FI/MV Modes 100 500 1000 Noise Frequency [kHz] 2005 Semtech Corp. / Rev. 5, 11/30/05 26 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued) Force Voltage Parameter Symbol Min Input Voltage Range @ VINP VVINP VEE + 1.75 Input Leakage Current IVINP –200 VRF Output Forcing Voltage RF Pin (±Full-Scale Current) FORCE Pin (E4257, E4287) Max Units VCC – 1.75 V +200 nA VEE + 2 VCC – 2 V VEE + 2 VCC – 2 V VEE + 2 VEE + 2 VEE + 4 VCC – 4 VCC – 2 VCC – 2 V V V VEE + 2 VCC – 2 V VEE + 2 VEE + 2 VEE + 4 VCC – 4 VCC – 2 VCC – 2 V V V ±0.5 ±0.8 ±9 ±45 ±1.6 ±15 ±45 ±160 mA mA mA mA FORCE Pin (E4237) Range A (±Full-Scale Current) Range C Sourcing Full-Scale Current Zero Current Sinking Full-Scale Current –50 0.985 –0.01 50 1.015 +0.01 mV V/V %FSVR ISC, ISK Range A Range B Range C Range D Voltage Accuracy Offset Gain Linearity Temperature Dependence (Note 1) Temperature Coefficient of Offset Temperature Coefficient of Gain Capacitive Loading Range at FORCE SELCOMP = 0 SELCOMP = 1, CCOMP = 470 pF 2005 Semtech Corp. / Rev. 5, 11/30/05 0 VFORCE Ranges A, B, C (±Full-Scale Current) Range D Sourcing Full-Scale Current Zero Current Sinking Full-Scale Current Force Amplifier Short Circuit Current Limit Typ Vos FV Gain FV INL ∆Vos/∆T ∆FVGain/∆T µV/˚C ppm/˚C 17 1 CLOAD 0 0 27 300 10 pF nF www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued) Measure Current Parameter Current Measurement Range Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Current Measurement Accuracy Measure Current Offset Gain (Note 5) Linearity Common Mode Error (Note 2) Common Mode Linearity Temperature Dependence (Note 1) Temperature Coefficient of Offset Temperature Coefficient of Gain Ranges A, B, C Range D 2005 Semtech Corp. / Rev. 5, 11/30/05 Symbol Min Typ Max Units –40 –400 –4 –40 40 400 4 40 µA µA mA mA VOS MI Gain MI INL –100 3.91 –0.05 100 4.15 0.05 mV V/V % FSCR CM Error –5.5 5.5 mV/V ∆CM Error –.05 0.05 %FSCR IMEASURE ∆Vos/∆T ∆MI Gain/∆T 28 60 ppm/˚C 30 360 ppm/˚C ppm/˚C www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued) Force Current Parameter Input Voltage Range @ VINP Input Leakage Current Output Forcing Current Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Compliance Voltage Range RF Pin (± Full-Scale Current) FORCE Pin (E4257, E4287) Ranges A, B, C (±Full-Scale Current) Range D Sourcing Full-Scale Current Zero Current Sinking Full-Scale Current Symbol Min VVINP –2.5 IIVIN –200 Max Units 2.5 V +200 nA –40 –400 –4 –40 40 400 4 40 µA µA mA mA VEE + 2 VCC – 2 V VEE + 2 VCC – 2 V VEE + 2 VEE + 2 VEE + 4 VCC – 4 VCC – 2 VCC – 2 V V V VEE + 2 VCC – 2 V VEE + 2 VEE + 2 VEE + 4 VCC – 4 VCC – 2 VCC – 2 V V V –5 5 % FSR 0.241 0.234 0.256 0.256 V/V V/V –0.07 –0.05 0.05 0.05 %FSCR %FSCR Common Mode Error CM Error –0.15 0.15 %FSCR/V Common Mode Linearity ∆CM Error –.05 0.05 %FSCR Temperature Dependence (Note 1) Temperature Coefficient of Offset Temperature Coefficient of Gain Ranges A, B, C Range D Capacitive Loading Range at FORCE SELCOMP = 0 SELCOMP = 1, CCOMP = 470 pF 2005 Semtech Corp. / Rev. 5, 11/30/05 0 IFORCE VRF VFORCE FORCE Pin (E4237) Range A (±Full-Scale Current) Range C Sourcing Full-Scale Current Zero Current Sinking Full-Scale Current Current Accuracy Offset Gain (Note 4) Ranges A, B, C Range D Linearity Range A Ranges B, C, D (Spec at ±0.05% FSCR) Typ Ios FI Gain FI INL ∆Ios/∆T ∆FI Gain/∆T 15 ppm/˚C 2 20 ppm/˚C ppm/˚C CLOAD 0 0 29 300 10 pF nF www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued) Measure Voltage Parameter Symbol Min Voltage Measurement Range VSENSE Voltage Measurement Accuracy Measure Voltage Offset Gain Linearity Vos MV Gain MV INL Temperature Dependence (Note 1) Temperature Coefficient of Offset Temperature Coefficient of Gain Max Units VEE + 2 VCC – 2 V –50 .985 –0.01 50 1.015 +0.01 mV V/V %FSVR ∆Vos/∆T ∆MV Gain/∆T Typ µV/˚C ppm/˚C 10 1 Digital Inputs (FV/FI, MI/MV, RS0, RS1, SELIPMU, SELEPMU, SELC, SELCOMP, HiZ, DISMON) Parameter Symbol Min Input Low Level VIL Input High Level VIH 2.4 Input Leakage Current IIN –200 2005 Semtech Corp. / Rev. 5, 11/30/05 30 Typ Max Units 0.8 V V +200 nA www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued) Force & Sense Switches Parameter Internal Force Switches On-Resistance E4257, E4287 E4237 External Force Switches Usable Input Voltage Range @ EPMUF Usable Input Current Range @ EPMUF On-resistance Leakage Current @ EPMUF Switch Open (SELEPMU = 0) Switch Closed (SELEPMU = 1) Input Capacitance SELEPMU = 1) External Sense Switches Usable Input Voltage Range @ EPMUS Usable Input Current Range @ EPMUS On-resistance Leakage Current Switch Open (SELEPMU = 0) Switch Closed (SELEPMU = 1) HiZ (Switches Open) Leakage Current (Note 3) @ FORCE = VEE + 2V to VCC – 2V @ RF = VEE + 2V to VCC – 2V @ SENSE = VEE + 2V to VCC –2V Symbol Min Typ Max Units 40 400 50 500 Ω 40 SVCC 40 50 10 10 V mA Ω SVCC 4 1.8 V mA kΩ RONRF_FORCE VEPMUF IEPMUF RONEPMUF VEE –40 Ileak Ileak EPMUF –10 –10 VEPMUS IEPMUS RONEPMUS VEE –4 Ileak Ileak –10 –10 10 10 nA nA –10 –10 –10 10 10 10 nA nA nA 110 20 110 110 pF pF pF pF 120 1 nA nA pF Ileak FORCE Pin Capacitance (Note 3) SELIPMU = SELEPMU = 0 (E4257, E4287) SELIPMU = SELEPMU = 0 (E4237) SELIPMU = 1, SELEPMU = 0 (E4257, E4287) SELIPMU = 1, SELEPMU = 0 (E4237) CFORCE SENSE Pin Capacitance (Note 3) CSENSE 0 3 pF Internal Pull-Up Current Capability IRPU –6 6 mA Internal Pull-Up Resistance (Switch & Resistor) RPU 2.5 6 kΩ 2005 Semtech Corp. / Rev. 5, 11/30/05 0 0 0 0 31 35 13 4.5 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued) Voltage Clamp Parameter Symbol Min Upper Voltage Limit Input Range HLV Lower Voltage Limit Input Range (Note 6) Upper/Lower Voltage Limit Input to FORCE Typ Max Units LLV + 1.0 VCC – 1.675 V LLV VEE + 1.675 VCC – 6 V |HLV, LLV – VFORCE| 0 16.5 V IHLV, ILLV –200 +200 nA Voltage Limiting Accuracy Upper Voltage Limit (HLV) VLIMIT+ HLV – 0.325 HLV + 0.325 V Lower Voltage Limit (LLV) VLIMIT– LLV – 0.325 LLV + 0.325 V Voltage clamp Current Limiting |ICLAMP| 42 150 mA HLV + 0.5 LLV – 2.5 HLV + 2.5 LLV – 0.5 V V Max Units Pin Difference Upper/Lower Voltage Limit Input Current FORCE Pin Short Circuit Protection Threshold HLV LLV Vprotect Analog MUX (E4287 ONLY) Parameter Usable Input Voltage Range (VA, VB, VC) MUX ""Super Voltage"" Input Channel 0 to Channel 1 Difference Switch On-Resistance @ 500 µA Symbol Min Vin VEE SVCC V VVC[0] – VVC[1] –1.5 SVCC V 2000 Ω RON_MUX Typ 1300 On-Resistance Variability (Across full VEE to SVCC Range) ∆RON_MUX 500 Ω Leakage Current ILEAK–MUX 100 nA Max Units IVMON Parameter Symbol Min ILEAK_IVMON –20 +20 nA IVMON Output Switch Impedance RIVMONSW 0.3 1.2 kΩ IVMON Output Current Capability IIVMON –4 4 mA IVMON Output Capacitance (both IVMON switches open) CIVMON 0 5 pF Leakage (both IVMON switches open) 2005 Semtech Corp. / Rev. 5, 11/30/05 32 Typ www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued) Comparator Parameter Symbol Min IVMAX Voltage Range IVMAX IVMIN Voltage Range Typ Max Units VEE + 1.75 VCC – 1.75 V IVMIN VEE + 1.75 VCC – 1.75 V Comparator Offset (IVMIN, IVMAX) Vos –100 +100 mV Input Bias Current at IVMIN, IVMAX Ibias –200 +200 nA Symbol Min Max Units 400 mV DUTNL, DUTNH Parameter Output Low Level (DUTNH (L)) @ |IOL| = 1.6 mA VOL Output High Level (DUTNH (L)) @ | IOH| = 400 µA VOH 2.4 Parameter Symbol Min DUTGND Voltage Range (referenced to GND) DUTGND Typ V Test Head Remote Ground DUTGND Leakage Current Typ Max Units –250 250 mV Ileak –200 +200 nA Symbol Min Max Units VDIFF -100 100 mV Driven Guard (E4287 ONLY) Parameter GUARD - SENSE @ DUTGND = 0V, VSENSE = 5V Typ DC Characteristic specifications are guaranteed over full Recommended Operating Condition ranges unless otherwise noted. Note 1: Note 2: Note 3: Note 4: Temperature coefficients are valid over a 25˚C to 85˚C junction temperature range unless otherwise noted. The mV/V units shown are derived as follows: (∆offset current * range resistance) / ∆output force voltage. SELIPMU = SELEPMU = FV/FI = 0. Unit Definitions: FI Gain =(∆IFORCE x REXT) ∆VVINP FSVR = Full-Scale Voltage Range Note 5: MI Gain = Note 6: VCC – 6V is the maximum LLV voltage that will clamp full-scale current on Range D. LLV will clamp full-scale current for ranges A, B, and C all the way up to HLV – 1V. ∆VIVMON (∆IFORCE x REXT) 2005 Semtech Corp. / Rev. 5, 11/30/05 FORCE Pin: FSVR = 16.25V (max supplies) @ Zero Current FSVR = 12.25V (max supplies) @ Full-Scale Current RF Pin: FSVR = 16.25V (max supplies) Across Entire Current Range FSCR = Full-Scale Current Range Range A: Range B: Range C: Range D: 33 80 µA 800 µA 8 mA 80 mA www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS AC Characteristics Force Voltage/Measure Current Parameter Symbol Force Output Voltage Settling Time (Note 2) CFORCE/SENSE = 100 pF, SELCOMP = 0 To ±0.025% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) FVtsettle To ±0.1% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) CFORCE/SENSE = 1,000 pF, SELCOMP = 1, CCOMP = 470 pF To ±0.025% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To ±0.1% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Measure Current Settling Time (Note 4) CFORCE/SENSE = 100 pF, SELCOMP = 0 To ±0.05% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Typ Max Units 25 25 25 15 105 95 85 75 µs µs µs µs 17 17 17 10 95 85 75 65 µs µs µs µs 115 35 30 30 200 120 110 100 µs µs µs µs 75 25 20 20 130 110 100 90 µs µs µs µs 105 40 30 40 550 195 150 100 µs µs µs µs 75 35 25 30 200 125 100 75 µs µs µs µs 230 50 40 45 420 200 175 150 µs µs µs µs 200 40 30 40 270 150 125 100 µs µs µs µs MItsettle To ±0.1% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) CFORCE/SENSE = 1,000 pF, SELCOMP = 1, CCOMP = 470 pF To ±0.05% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To ±0.1% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) 2005 Semtech Corp. / Rev. 5, 11/30/05 Min 34 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued) Force Voltage/Measure Current (continued) Parameter Force Amplifier Slew Rate I/V Monitor (Note 3) DISABLE True to VMON Disable Time DISABLE False to IVMON Enable Time Slew Rate Voltage Clamp Activation Time (Note 5) Recovery Time (Note 5) Overshoot Force Amp HiZ True to FORCE Disable Time (Note 3) HiZ False to FORCE Enable Time (Note 3) 2005 Semtech Corp. / Rev. 5, 11/30/05 Symbol Min Typ SR 0.9 1 tz toe ∆V/∆t Max Units V/µs 750 1.5 6.7 ns µs V/µs tA tR Vovershoot 6 6 0.5 µs µs V tz toe 10 45 µs µs 35 5 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued) Force Current/Measure Voltage Parameter Symbol Force Output Current Settling Time (Note 2) CFORCE/SENSE = 100 pF, SELCOMP = 0 To ±0.05% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) FItsettle To ±0.1% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) CFORCE/SENSE = 1,000 pF, SELCOMP = 1, CCOMP = 470 pF To ±0.05% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To ±0.1% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Measure Voltage Settling Time (Note 4) CFORCE/SENSE = 100 pF, SELCOMP = 0 To ±0.025% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To ±0.1% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Typ Max Units 320 45 30 30 575 185 135 85 µs µs µs µs 270 35 25 20 450 175 125 75 µs µs µs µs 540 70 30 40 700 250 200 150 µs µs µs µs 490 60 25 30 650 200 150 95 µs µs µs µs 270 40 22 20 425 175 70 60 µs µs µs µs 205 25 15 10 350 100 60 50 µs µs µs µs 490 60 25 30 620 195 80 70 µs µs µs µs 400 45 15 20 510 175 70 60 µs µs µs µs MVtsettle CFORCE/SENSE = 1,000 pF, SELCOMP = 1, CCOMP = 470 pF To ±0.025% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To ±0.1% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) 2005 Semtech Corp. / Rev. 5, 11/30/05 Min 36 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued) Force Current/Measure Voltage (continued) Parameter Force Amplifier Slew Rate I/V Monitor (Note 3) DISABLE True to VMON Disable Time DISABLE False to IVMON Enable Time Slew Rate Voltage Clamp Activation Time (Note 5) Recovery Time (Note 5) Overshoot Force Amp HiZ True to FORCE Disable Time (Note 3) HiZ False to FORCE Enable Time (Note 3) Symbol Min Typ SR 0.9 1 tz toe ∆V/∆t Max Units V/µs 750 1.5 6.7 ns µs V/µs tA tR Vovershoot 6 6 0.5 µs µs V tz toe 10 45 µs µs Max Units 2 µs 166 kHz 5 Comparator Parameter Propagation Delay (Note 6) >3V Swing Minimum Pulse Width (3V swing, IVMAX/IVMIN set to 50%) Maximum Toggle Rate 2005 Semtech Corp. / Rev. 5, 11/30/05 Symbol tpd(+), (-) 37 Min Typ www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued) Note 1: Note 2: Note 3: Settling times are not production tested. Guaranteed by characterization. Measured from full-scale step at VINP to FORCE output. Test Conditions: 1. 15 pF load on output 2. input signal has 5 ns rise/fall time 3. tpd is defined as the difference between the time when the input crosses 1.5V to when the output changes 10% (of the total change) from the initial voltage level. (see timing diagram below). 100% 10% Output 10% 100% tpd1 tpd2 2V Input 1.5V 1.5V 0.8V Note 4: Note 5: Note 6: Measured from full-scale step at VINP to IVMON output. Clamp activation/recovery time indicates the delay between when the clamps are actually engaged or disengaged and when clamping is indicated with the comparator outputs. Comparator Propagation Delay Measurements. HiZ=1, MI/MV*=0, SELIPMU=1, input signal applied to FORCE/SENSE. VFORCE/SENSE SR = 1V/µs 100% 50% IVMIN, IVMAX 0% Tpd(+) Tpd(–) DUTNH DUTNL Unit Definitions: FSVR = Full-Scale Voltage Range FORCE Pin: FSVR = 16.25V (max supplies) @ Zero Current FSVR = 12.25V (max supplies) @ Full-Scale Current RF Pin: FSVR = 16.25V (max supplies) Across Entire Current Range FSCR = Full-Scale Current Range Range A: Range B: Range C: Range D: 2005 Semtech Corp. / Rev. 5, 11/30/05 80 µA 800 µA 8 mA 80 mA 38 www.semtech.com E4237/E4257/E4287 TEST AND MEASUREMENT PRODUCTS Ordering Information Model Number Package E4287AHFT 14 x 14 x 2.0 mm, 80 Pin, Int_TEP_MQFP (with Internal Heat Spreader) EVM4287AHFT Edge4287 Evaluation Module Model Number Package E4237ALPT 9mm x 9mm, 64-Pad, LPCC E4237ALPT-T 9mm x 9mm 64-Pad, LPCC (Tape & Reel) EVM4237ALPT Edge4237 Evaluation Module Model Number Package E4257ALPT 9mm x 9mm, 64-Pad, LPCC E4257ALPT-T 9mm x 9mm 64-Pad, LPCC (Tape & Reel) EVM4257ALPT Edge4257 Evaluation Module Pb This product is lead-free. Contact Infor mation Semtech Corporation Test and Measurement Division 10021 Willow Creek Rd., San Diego, CA 92131 Phone: (858)695-1808 FAX (858)695-2633 2005 Semtech Corp. / Rev. 5, 11/30/05 39 www.semtech.com