DG406/407 Vishay Siliconix 16-Ch/Dual 8-Ch High-Performance CMOS Analog Multiplexers DESCRIPTION FEATURES The DG406 is a 16-channel single-ended analog multiplexer designed to connect one of sixteen inputs to a common output as determined by a 4-bit binary address. The DG407 selects one of eight differential inputs to a common differential output. Break-before-make switching action protects against momentary shorting of inputs. An on channel conducts current equally well in both directions. In the off state each channel blocks voltages up to the power supply rails. An enable (EN) function allows the user to reset the multiplexer/demultiplexer to all switches off for stacking several devices. All control inputs, address (Ax) and enable (EN) are TTL compatible over the full specified operating temperature range. Applications for the DG406/407 include high speed data acquisition, audio signal switching and routing, ATE systems, and avionics. High performance and low power dissipation make them ideal for battery operated and remote instrumentation applications. For additional application information order Faxback document numbers 70601 and 70604. Designed in the 44 V silicon-gate CMOS process, the absolute maximum voltage rating is extended to 44 volts, allowing operation with ± 20 V supplies. Additionally single (12 V) supply operation is allowed. An epitaxial layer prevents latchup. • • • • • • Low On-Resistance - rDS(on): 50 Ω Low Charge Injection - Q: 15 pC Fast Transition Time - tTRANS: 200 ns Low Power: 0.2 mW Single Supply Capability 44 V Supply Max Rating Pb-free Available RoHS* COMPLIANT BENEFITS • • • • • • Higher Accuracy Reduced Glitching Improved Data Throughput Reduced Power Consumption Increased Ruggedness Wide Supply Ranges: ± 5 V to ± 20 V APPLICATIONS • • • • • • • Data Acquisition Systems Audio Signal Routing Medical Instrumentation ATE Systems Battery Powered Systems High-Rel Systems Single Supply Systems For applications information please request FaxBack documents 70601 and 70604. FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG406 DG407 Dual-In-Line and SOIC Wide-Body V+ NC NC Dual-In-Line and SOIC Wide-Body 28 D V+ 1 28 Da 2 27 V- Db 2 27 V- 3 26 S8 NC 3 26 S8a S8b 4 25 S7a 1 S16 4 25 S7 S15 5 24 S6 S7b 5 24 S6a 23 S5 S6b 6 23 S5a 7 22 S4a 21 S3a 20 S2a S14 6 S13 7 22 S4 S5b S12 8 21 S3 S4b 8 9 S11 9 20 S2 S3b S10 10 19 S1 S2b 10 19 S1a 18 EN S1b 11 18 EN 17 A0 GND 12 17 A0 13 16 A1 14 15 A2 S9 11 GND 12 Decoders/Drivers NC 13 16 A1 NC A3 14 15 A2 NC Top View 2 Decoders/Drivers Top View * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 70061 S-71009–Rev. I, 14-May-07 www.vishay.com 1 DG406/407 Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION 5 25 S7 S7b S14 6 24 S6 S13 7 23 S5 Da V- S15 V+ D 28 27 26 Db V+ 1 NC NC 2 S 8b NC 3 S8 S 16 4 S 8a PLCC and LCC DG407 4 3 2 1 28 27 26 V- PLCC and LCC DG406 5 25 S7a S6b 6 24 S6a S5b 7 23 S5a S4b 8 22 S4a S12 8 22 S4 S11 9 21 S3 S3b 9 21 S3a S10 10 20 S2 S2b 10 20 S2a S9 11 19 S1 S1b 11 19 S1a EN A0 A1 A2 NC NC GND EN A0 NC A1 12 13 14 15 16 17 18 A2 12 13 14 15 16 17 18 A3 Decoders/Drivers GND Decoders/Drivers Top View Top View TRUTH TABLE - DG406 TRUTH TABLE - DG407 A3 A2 A1 A0 EN On Switch A2 A1 A0 EN On Switch Pair X 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 X 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 X 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 X 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 None 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 X 0 0 0 0 1 1 1 1 X 0 0 1 1 0 0 1 1 X 0 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1 1 None 1 2 3 4 5 6 7 8 Logic "0" = VAL ≤ 0.8 V Logic "1" = VAH ≥ 2.4 V X = Do not Care ORDERING INFORMATION - DG406 ORDERING INFORMATION - DG407 Temp Range Temp Range - 40 to 85 °C www.vishay.com 2 Package Part Number 28-Pin Plastic DIP DG406DJ DG406DJ-E3 28-Pin PLCC DG406DN DG406DN-T1-E3 28-Pin Widebody SOIC DG406DW DG406DW-E3 - 40 to 85 °C Package Part Number 28-Pin Plastic DIP DG407DJ DG407DJ-E3 28-Pin PLCC DG407DN DG407DN-T1-E3 28-Pin Widebody SOIC DG407DW DG407DW-E3 Document Number: 70061 S-71009–Rev. I, 14-May-07 DG406/407 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Parameter Voltages Referenced to V- V+ GND Digital Inputsa, VS, VD Current (Any Terminal) Peak Current, S or D (Pulsed at 1 ms, 10 % Duty Cycle Max) Storage Temperature Power Dissipation (Package)b Limit 44 25 (V-) - 2 V to (V+) + 2 V or 20 mA, whichever occurs first 30 100 (AK, AZ Suffix) - 65 to 150 (DJ, DN Suffix) - 65 to 125 Unit V mA °C 28-Pin Plastic DIPb 625 28-Pin CerDIPd 1.2 W 28-Pin Plastic PLCCc 450 mW LCC-28e 28-Pin Widebody SOIC 1.35 W 450 mW mW Notes: a. Signals on SX, DX or INX exceeding V+ or V- will be clamped by internal diodes. Limit forward diode current to maximum current ratings. b. All leads soldered or welded to PC board. c. Derate 6 mW/°C above 75°C. d. Derate 12 mW/°C above 75°C. e. Derate 13.5 mW/°C above 75°C . Document Number: 70061 S-71009–Rev. I, 14-May-07 www.vishay.com 3 DG406/407 Vishay Siliconix SPECIFICATIONSa Test Conditions Unless Otherwise Specified V+ = 15 V, V- = - 15 V VAL = 0.8 V, VAH = 2.4 Vf Tempb rDS(on) VD = ± 10 V, IS = - 10 mA Sequence Each Switch On Room Full 50 ΔrDS(on) VD = ± 10 V Room 5 Parameter Analog Switch Symbol Analog Signal Rangee Drain-Source On-Resistance VANALOG rDS(on) Matching Between Channelsg Source Off Leakage Current Drain Off Leakage Current Full IS(off) ID(off) VEN = 0 V VD = ± 10 V VS = ± 10 V DG406 DG407 Drain On Leakage Current ID(on) Typc VS = VD = ± 10 Sequence Each Switch On DG406 DG407 Room Full Room Full Room Full Room Full Room Full A Suffix - 55 to 125 °C D Suffix - 40 to 85 °C Mind Maxd Mind 15 - 15 - 15 0.01 0.04 0.04 0.04 0.04 100 125 Maxd Unit 15 V 100 125 Ω % - 0.5 - 50 -1 - 200 -1 - 100 -1 - 200 -1 - 100 0.5 50 1 200 1 100 1 200 1 100 - 0.5 -5 -1 - 40 -1 - 20 -1 - 40 -1 - 20 0.5 5 1 40 1 20 1 40 1 20 nA Digital Control Logic High Input Voltage VINH Full Logic Low Input Voltage VINL Full Logic High Input Current IAH VA = 2.4 V, 15 V Full -1 1 -1 1 Logic Low Input Current IAL VEN = 0 V, 2.4 V, VA = 0 V Full -1 1 -1 1 Logic Input Capacitance Cin f = 1 MHz Room 7 Transition Time tTRANS See Figure 2 200 Break-Before-Make Interval tOPEN See Figure 4 Enable Turn-On Time tON(EN) Enable Turn-Off Time tOFF(EN) Room Full Room Full Room Full Room Full Room 15 pC Room - 69 dB 2.4 2.4 0.8 0.8 V µA pF Dynamic Characteristics See Figure 3 Charge Injection Q Off Isolationh OIRR Source Off Capacitance CS(off) Drain Off Capacitance Drain On Capacitance CD(off) CD(on) VS = 0 V, CL = 1 nF, RS = 0 Ω VEN = 0 V, RL = 1 kΩ f = 100 kHz VEN = 0 V, VS = 0 V, f = 1 MHz VEN = 0 V VD = 0 V f = 1 MHz 50 350 450 25 10 150 Room 8 130 DG407 Room 65 DG406 Room 140 DG407 Room 70 Room Full Room Full Room Full Room Full 13 25 10 200 400 150 300 70 Room 350 450 200 400 150 300 ns pF Power Supplies Positive Supply Current I+ Negative Supply Current I- Positive Supply Current I+ Negative Supply Current I- VEN = VA = 0 or 5 V VEN = 2.4 V, VA = 0 V www.vishay.com 4 - 0.01 30 75 -1 - 10 50 - 0.01 30 75 -1 - 10 500 900 - 20 - 20 500 700 µA - 20 - 20 Document Number: 70061 S-71009–Rev. I, 14-May-07 DG406/407 Vishay Siliconix SPECIFICATIONSa (FOR SINGLE SUPPLY) Test Conditions Unless Otherwise Specified V+ = 12 V, V- = 0 V Parameter Analog Switch Symbol Analog Signal Rangee Drain-Source On-Resistance VANALOG rDS(on) rDS(on) Matching Between Channelsg ΔrDS(on) Source Off Leakage Current IS(off) Drain Off Leakage Current ID(off) Drain On Leakage Current ID(on) VAL = 0.8 V, VAH = 2.4 Vf Tempb Typc Full VD = 3 V, 10 V, IS = - 1 mA Sequence Each Switch On VEN = 0 V VD = 10 V or 0.5 V VS = 0.5 V or 10 V VS = VD = ± 10 Sequence Each Switch On Room A Suffix - 55 to 125 °C D Suffix - 40 to 85 °C Mind Maxd Mind Maxd Unit 0 12 0 12 V 120 Ω 90 Room 5 Room 0.01 DG406 Room 0.04 DG407 Room 0.04 DG406 Room 0.04 DG407 Room 0.04 120 % nA Dynamic Characteristics Switching Time of Multiplexer tOPEN VS1 = 8 V, VS8 = 0 V, VIN = 2.4 V Room 300 450 450 Enable Turn-On Time tON(EN) Room 250 600 600 Enable Turn-Off Time tOFF(EN) VINH = 2.4 V, VINL = 0 V VS1 = 5 V Room 150 300 300 Q CL = 1 nF, VS = 6 V, RS = 0 Room 20 Room Full Room Full 13 VEN = 0 V or 5 V, VA = 0 V or 5 V Charge Injection ns pC Power Supplies Positive Supply Current Negative Supply Current I+ I- - 0.01 30 75 - 20 - 20 30 75 - 20 - 20 µA Notes: a. Refer to PROCESS OPTION FLOWCHART. b. Room = 25 °C, Full = as determined by the operating temperature suffix. c. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. d. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet. e. Guaranteed by design, not subject to production test. f. VIN = input voltage to perform proper function. g. ΔrDS(on) = rDS(on) MAX - rDS(on) MIN. h. Worst case isolation occurs on Channel 4 due to proximity to the drain pin. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Document Number: 70061 S-71009–Rev. I, 14-May-07 www.vishay.com 5 DG406/407 Vishay Siliconix TYPICAL CHARACTERISTICS TA = 25 °C, unless otherwise noted 80 160 120 r DS(on) – On-Resistance (Ω) r DS(on) – On-Resistance (Ω) 70 ± 5V 80 ±8V ± 10 V ± 12 V ± 15 V 40 ± 20 V 125 °C 60 85 °C 50 25 °C 40 0°C 30 - 40 °C 20 - 55 °C 10 0 - 15 0 - 20 - 12 -4 4 VD – Drain Voltage (V) 12 V+ = 15 V V- = - 15 V 20 - 10 -5 0 5 VD – Drain Voltage (V) 10 15 rDS(on) vs. VD and Temperature rDS(on) vs. VD and Supply 120 V+ = 7.5 V 80 200 I D, I S – Current (pA) r DS(on) – On-Resistance (Ω) V+ = 15 V V- = - 15 V VS = - VD for ID(off) VD = VS(open) for ID(on) V- = 0 V 240 160 10 V 120 12 V 15 V 80 20 V 22 V 40 IS(off) 0 DG406 ID(on), ID(off) - 40 DG407 ID(on), ID(off) - 80 40 - 120 - 15 0 0 4 8 12 VD – Drain Voltage (V) 16 20 15 350 100 nA V+ = 15 V V- = - 15 V VD = "14 V 300 tTRANS 250 1 nA ID(on), ID(off) Time (ns) I D, I S – Current -5 0 5 10 VS , VD – Source Drain Voltage (V) ID , IS Leakage Currents vs. Analog Voltage rDS(on) vs. VD and Supply 10 nA - 10 100 pA 200 tON(EN) 150 IS(off) 10 pA 100 tOFF(EN) 1 pA 50 0.1 pA - 55 - 35 - 15 www.vishay.com 6 0 5 25 45 65 85 105 125 ±5 ± 10 ± 15 Temperature (°C) VSUPPLY – Supply Voltage (V) ID , IS Leakages vs. Temperature Switching Times vs. Bipolar Supplies ± 20 Document Number: 70061 S-71009–Rev. I, 14-May-07 DG406/407 Vishay Siliconix TYPICAL CHARACTERISTICS TA = 25 °C, unless otherwise noted 70 700 600 60 500 50 tTRANS 400 Q (pC) Time (ns) V- = 0 V 300 40 V+ = 12 V, V- = 0 V 30 tON(EN) 200 V+ = 15 V, V- = - 15 V 20 100 10 tOFF(EN) 0 5 10 15 0 - 15 20 - 10 -5 0 5 15 VS – Source Voltage (V) V+ – Supply Voltage (V) Switching Times vs. Single Supply Charge Injection vs. Analog Voltage - 140 10 EN = 5 V AX = 0 or 5 V 8 - 120 I+ 6 - 100 4 I – Current (mA) ISOL (dB) 10 - 80 - 60 2 0 IGND -2 -4 - 40 I-6 - 20 -8 0 - 10 100 1k 10 k 100 k 1M 10 M 10 10 k 100 k 1M 10 M Off-Isolation vs. Frequency Supply Currents vs. Switching Frequency 3 V+ = 15 V V- = - 15 V 2 220 tTRANS V TH (V) Time (ns) 1k f – Frequency (Hz) 300 260 100 f – Frequency (Hz) tON(EN) 180 1 140 100 tOFF(EN) 0 60 - 55 - 35 - 15 5 25 45 65 85 105 125 0 5 10 15 Temperature (°C) VSUPPLY – Supply Voltage (V) tON/tOFF vs. Temperature Switching Threshold vs. Supply Voltage Document Number: 70061 S-71009–Rev. I, 14-May-07 20 www.vishay.com 7 DG406/407 Vishay Siliconix SCHEMATIC DIAGRAM (TYPICAL CHANNEL) V+ VREF GND D A0 V+ Level Shift AX V- Decode/ Drive S1 V+ EN Sn V- Figure 1. TEST CIRCUITS + 15 V + 2.4 V V+ EN A2 A1 ± 10 V S1 A3 S2 - S 15 DG406 S16 A0 ± 10 V VO D GND Logic Input V- tr < 20 ns tf < 20 ns 3V 50 % 0V 50 Ω 35 pF 300 Ω - 15 V VS1 90 % Switch Output + 15 V + 2.4 V V+ EN A2 VO S1b 0V 90 % ± 10 V VS8 * DG407 S8b A1 A0 tTRANS ± 10 V S1 ON Db GND tTRANS S8 ON VO V- 50 Ω 300 Ω 35 pF - 15 V * = S1a – S8a, S2b S± 7b, Da Figure 2. Transition Time www.vishay.com 8 Document Number: 70061 S-71009–Rev. I, 14-May-07 DG406/407 Vishay Siliconix TEST CIRCUITS + 15 V V+ A3 -5V S1 A2 S2 - S 16 A1 DG406 A0 VO D EN GND V300 Ω 50 Ω Logic Input 35 pF - 15 V tr < 20 ns tf < 20 ns 3V 50 % 0V tON(EN) + 15 V V+ A2 S1b S1a - S 8a S2b - S 8b A1 A0 tOFF(EN) 0V Switch Output -5V VO 90 % 90 % VO DG407 Da and Db EN GND VO V- 35 pF 50 Ω 300 Ω - 15 V Figure 3. Enable Switching Time + 15 V Logic Input V+ EN + 2.4 V All S and Da A3 A2 A1 +5V tr < 20 ns tf < 20 ns 3V 50 % 0V DG406 DG407 A0 GND 50 Ω VS VO D,D b 80 % Switch Output V300 Ω 35 pF VO - 15 V 0V tOPEN Figure 4. Break-Before-Make Interval Document Number: 70061 S-71009–Rev. I, 14-May-07 www.vishay.com 9 DG406/407 Vishay Siliconix APPLICATIONS HINTS Sampling speed is limited by two consecutive events: the transition time of the multiplexer, and the settling time of the sampled signal at the output. tTRANS is given on the data sheet. Settling time at the load depends on several parameters: rDS(on) of the multiplexer, source impedance, multiplexer and load capacitances, charge injection of the multiplexer and accuracy desired. The settling time for the multiplexer alone can be derived from the model shown in Figure 5. Assuming a low impedance signal source like that presented by an op amp or a buffer amplifier, the settling time of the RC network for a given accuracy is equal to nτ: The maximum sampling frequency of the multiplexer is: 1 f s = ---------------------------------------------------------N ( t SETTLING + t TRANS ) (1) where N = number of channels to scan tSETTLING = nτ = n x rDS(on) x CD(on) For the DG406 then, at room temp and for 12-bit accuracy, using the maximum limits: 1 f s = ------------------------------------------------------------------------------------------------------12 -12 16 ( 9 × 100 Ω × 10 F ) + 300 × 10 s (2) or % ACCURACY # BITS N 0.25 8 6 0.012 12 9 0.0017 15 11 rDS(on) VOUT RS = 0 CD(on) Figure 5. Simplified Model of One Multiplexer Channel www.vishay.com 10 fs = 694 kHz (3) From the sampling theorem, to properly recover the original signal, the sampling frequency should be more than twice the maximum component frequency of the original signal. This assumes perfect bandlimiting. In a real application sampling at three to four times the filter cutoff frequency is a good practice. Therefore from equation 2 above: 1 f c = --- × f s = 173 kHz 4 (4) From this we can see that the DG406 can be used to sample 16 different signals whose maximum component frequency can be as high as 173 kHz. If for example, two channels are used to double sample the same incoming signal then its cutoff frequency can be doubled. Document Number: 70061 S-71009–Rev. I, 14-May-07 DG406/407 Vishay Siliconix APPLICATIONS HINTS The block diagram shown in Figure 6 illustrates a typical data acquisition front end suitable for low-level analog signals. Differential multiplexing of small signals is preferred since this method helps to reject any common mode noise. This is especially important when the sensors are located at a distance and it may eliminate the need for individual To Sensor 1 To Sensor 8 Analog Multiplexer amplifiers. A low rDS(on), low leakage multiplexer like the DG407 helps to reduce measurement errors. The low power dissipation of the DG407 minimizes on-chip thermal gradients which can cause errors due to temperature mismatch along the parasitic thermocouple paths. Please refer to Application Note AN203 for additional information. Inst Amp DG407 S/H 12-Bit A/D Converter Controller Figure 6. Measuring low-level analog signals is more accurate when using a differential multiplexing technique. Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and reliability data, see http://www.vishay.com/ppg?70061. Document Number: 70061 S-71009–Rev. I, 14-May-07 www.vishay.com 11 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1