INA 200 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com High-Side Measurement Current-Shunt Monitor with Open-Drain Comparator and Reference Check for Samples: INA200-Q1, INA201-Q1, INA202-Q1 FEATURES 1 • • • • • • • • • • • DESCRIPTION Qualified for Automotive Applications Complete Current Sense Solution 0.6-V Internal Voltage Reference Internal Open-Drain Comparator Latching Capability on Comparator Common-Mode Range: –16 V to 80 V High Accuracy: 3.5% Max Error Over Temperature Bandwidth: 500 kHz (INA200-Q1) Quiescent Current: 1800 μA (Max) Latch-Up Exceeds 100mA per JESD78 - Class I Package: MSOP-8 The INA200-Q1, INA201-Q1, and INA202-Q1 are high-side current-shunt monitors with voltage output. The INA200-Q1–INA202-Q1 can sense drops across shunts at common-mode voltages from –16V to 80V. The INA200-Q1–INA202-Q1 are available with three output voltage scales: 20V/V, 50V/V, and 100V/V, with up to 500kHz bandwidth. The INA200-Q1, INA201-Q1, and INA202-Q1 also incorporate an open-drain comparator and internal reference providing a 0.6V threshold. External dividers are used to set the current trip point. The comparator includes a latching capability, which can be made transparent by grounding (or leaving open) the RESET pin. The INA200-Q1, INA201-Q1, and INA202-Q1 operate from a single +2.7V to +18V supply, drawing a maximum of 1800μA of supply current. Package option include the very small MSOP-8. All versions are specified over the extended operating temperature range of –40°C to 125°C. APPLICATIONS • • • Automotive Power Management Battery Chargers 1 INA200 (G = 20) INA201 (G = 50) INA202 (G = 100) V+ 2 OUT G VIN+ 8 VIN- 7 0.6V Reference 3 CMPIN Comparator 4 CMPOUT 6 GND RESET 5 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2011, Texas Instruments Incorporated INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. ORDERING INFORMATION (1) TA -40°C to 125°C (1) PACKAGE MSOP - DGK ORDERABLE PART NUMBER Reel of 2500 TOP-SIDE MARKING INA200AQDGKRQ1 Product Preview INA201AQDGKRQ1 QWV INA202AQDGKRQ1 Product Preview For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the device product folder at www.ti.com. ABSOLUTE MAXIMUM RATINGS (1) VALUE UNIT 18 V Differential (VIN+) – (VIN–) –18 to +18 V Common Mode (2) –16 to +80 V GND – 0.3 to (V+) + 0.3 V GND – 0.3 to (V+) + 0.3 V GND – 0.3 to 18 V Supply Voltage, V+ Current-Shunt Monitor Analog Inputs, VIN+, VIN– Comparator Analog Input and Reset Pins (2) Analog Output, Out (2) Comparator Output, Out Pin (2) Input Current Into Any Pin (2) 5 mA Storage Temperature –65 to +150 °C Junction Temperature +150 °C (1) (2) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not supported. This voltage may exceed the ratings shown if the current at that pin is limited to 5mA. Figure 1. PIN CONFIGURATIONS INA200-INA202 V+ 1 8 VIN+ OUT 2 7 VIN- CMPIN 3 6 CMPOUT GND 4 5 RESET MSOP-8 (DGK), SO-8 (D) 2 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com ELECTRICAL CHARACTERISTICS: CURRENT-SHUNT MONITOR Boldface limits apply over the specified temperature range: TA = –40°C to +125°C. At TA = +25°C, VS = +12V, VCM = +12V, VSENSE = 100mV, RL = 10kΩ to GND, RPULL-UP = 5.1kΩ connected from CMPOUT to VS, and CMPIN = GND, unless otherwise noted. INA200-Q1, INA201-Q1, INA202-Q1 CURRENT-SHUNT MONITOR PARAMETERS CONDITIONS MIN TYP MAX UNIT 0.15 (VS – 0.25)/Gain V INPUT Full-Scale Sense Input Voltage Common-Mode Input Range Common-Mode Rejection VSENSE CMR Over Temperature Offset Voltage, RTI (1) VSENSE = VIN+ – VIN– –16 VCM VIN+ = –16V to +80V 80 VIN+ = +12V to +80V 100 80 V 100 dB 123 dB ±2.5 mV +25°C to +125°C ±3 mV –40°C to +25°C ±3.5 vs Temperature vs Power Supply Input Bias Current, VIN– Pin ±0.5 VOS dVOS/dT PSR mV μV/°C TMIN to TMAX 5 VOUT = 2V, VIN+ = +18V, 2.7V 2.5 100 μV/V ±9 ±16 μA IB OUTPUT (VSENSE ≥ 20mV) Gain: G INA200-Q1 20 V/V INA201-Q1 50 V/V INA202-Q1 100 Gain Error Over Temperature VSENSE = 20mV to 100mV Total Output Error (2) VSENSE = 120mV, VS = +16V Over Temperature ±0.75 VSENSE = 120mV, VS = +16V Nonlinearity Error (3) Output Impedance ±0.2 VSENSE = 20mV to 100mV VSENSE = 20mV to 100mV % ±2 % ±2.2 % ±3.5 % ±0.002 % 1.5 Ω No Sustained Oscillation 10 nF –16V ≤ VCM < 0V 300 RO Maximum Capacitive Load V/V ±1 OUTPUT (VSENSE < 20mV) (4) INA200-Q1, INA201-Q1, INA202-Q1 mV INA200-Q1 0V ≤ VCM ≤ VS, VS = 5V 0.4 V INA201-Q1 0V ≤ VCM ≤ VS, VS = 5V 1 V INA202-Q1 0V ≤ VCM ≤ VS, VS = 5V 2 VS < VCM ≤ 80V INA200-Q1, INA201-Q1, INA202-Q1 300 V mV VOLTAGE OUTPUT (5) Output Swing to the Positive Rail VIN– = 11V, VIN+ = 12V (V+) – 0.15 (V+) – 0.25 V Output Swing to GND (6) VIN– = 0V, VIN+ = –0.5V (VGND) + 0.004 (VGND) + 0.05 V INA200-Q1 CLOAD = 5pF 500 kHz INA201-Q1 CLOAD = 5pF 300 kHz INA202-Q1 CLOAD = 5pF 200 kHz Phase Margin CLOAD < 10nF 40 Degrees 1 V/μs 2 μs 40 nV/√Hz FREQUENCY RESPONSE Bandwidth: Slew Rate BW SR VSENSE = 10mVPP to 100mVPP, CLOAD = 5pF Settling Time (1%) NOISE, RTI Voltage Noise Density (1) (2) (3) (4) (5) (6) Offset is extrapolated from measurements of the output at 20mV and 100mV VSENSE. Total output error includes effects of gain error and VOS. Linearity is best fit to a straight line. For details on this region of operation, see the Accuracy Variations section in the Applications Information. See Typical Characteristic curve Output Swing vs Output Current. Specified by design. Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 3 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com ELECTRICAL CHARACTERISTICS: COMPARATOR Boldface limits apply over the specified temperature range: TA = –40°C to +125°C. At TA = +25°C, VS = +12V, VCM = +12V, VSENSE = 100mV, RL = 10kΩ to GND, and RPULL-UP = 5.1kΩ connected from CMPOUT to VS, unless otherwise noted. INA200-Q1, INA201-Q1, INA202-Q1 COMPARATOR PARAMETERS CONDITIONS MIN TYP MAX UNIT TA = +25°C 590 608 620 mV 625 mV OFFSET VOLTAGE Threshold Over Temperature 586 Hysteresis (1) TA = –40°C to +85°C –8 mV INPUT BIAS CURRENT (2) CMPIN Pin 0.005 vs Temperature 10 nA 15 nA INPUT VOLTAGE RANGE 0V to VS – 1.5V V CMP VOUT 1V to 4V, RL ≥ 15kΩ Connected to 5V 200 V/mV ILKG VID = 0.4V, VOH = VS 0.0001 1 μA VOL VID = –0.6V, IOL = 2.35mA 220 300 mV RL to 5V, CL = 15pF, 100mV Input Step with 5mV Overdrive 1.3 CMPIN Pin OUTPUT (OPEN-DRAIN) Large-Signal Differential Voltage Gain High-Level Leakage Current (3) (4) Low-Level Output Voltage (3) RESPONSE TIME Response Time (5) μs RESET RESET Threshold (6) Logic Input Impedance Minimum RESET Pulse Width RESET Propagation Delay (1) (2) (3) (4) (5) (6) 1.1 V 2 MΩ 1.5 μs 3 μs Hysteresis refers to the threshold (the threshold specification applies to a rising edge of a noninverting input) of a falling edge on the noninverting input of the comparator; refer to Figure 2. Specified by design. VID refers to the differential voltage at the comparator inputs. Open-drain output can be pulled to the range of +2.7V to +18V, regardless of VS. The comparator response time specified is the interval between the input step function and the instant when the output crosses 1.4V. The RESET input has an internal 2MΩ (typical) pull-down. Leaving RESET open results in a LOW state, with transparent comparator operation. VTHRESHOLD 0.592V 0.6V Input Voltage Hysteresis = VTHRESHOLD - 8mV Figure 2. Typical Comparator Hysteresis 4 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com ELECTRICAL CHARACTERISTICS: GENERAL Boldface limits apply over the specified temperature range: TA = –40°C to +125°C. At TA = +25°C, VS = +12V, VCM = +12V, VSENSE = 100mV, RL = 10kΩ to GND, RPULL-UP = 5.1kΩ connected from CMPOUT to VS, and CMPIN = 1V, unless otherwise noted. INA200-Q1, INA201-Q1, INA202-Q1 GENERAL PARAMETERS CONDITIONS MIN TYP MAX UNIT +18 V 1350 1800 μA 1850 μA POWER SUPPLY Operating Power Supply VS Quiescent Current IQ Over Temperature Comparator Power-On Reset Threshold +2.7 VOUT = 2V VSENSE = 0mV (1) 1.5 V TEMPERATURE Operating Temperature Range –40 +125 °C Storage Temperature Range –65 +150 °C Thermal Resistance θJA MSOP-8 Surface-Mount (1) 200 °C/W The INA200-Q1, INA201-Q1, and INA202-Q1 are designed to power-up with the comparator in a defined reset state as long as RESET is open or grounded. The comparator is in reset as long as the power supply is below the voltage shown here. The comparator assumes a state based on the comparator input above this supply voltage. If RESET is high at power-up, the comparator output comes up high and requires a reset to assume a low state, if appropriate. Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 5 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com TYPICAL CHARACTERISTICS At TA = +25°C, VS = +12V, VIN+ = 12V, and VSENSE = 100mV, unless otherwise noted. GAIN vs FREQUENCY 45 G = 20 25 20 30 G = 20 25 20 15 15 10 10 5 5 10k 100k 10k 1M 100k Frequency (Hz) Figure 3. Figure 4. GAIN PLOT COMMON-MODE AND POWER-SUPPLY REJECTION vs FREQUENCY 140 18 130 Common-Mode and Power-Supply Rejection (dB) 100V/V 16 14 50V/V 12 10 8 20V/V 6 4 120 CMR 110 100 90 PSR 80 70 60 50 2 40 0 20 100 200 300 400 500 600 700 800 900 10 100 1k 10k 100k Frequency (Hz) Figure 5. Figure 6. OUTPUT ERROR vs VSENSE OUTPUT ERROR vs COMMON-MODE VOLTAGE 4.0 0.1 3.5 0.09 0.08 3.0 Output Error (% ) Output Error (% error of the ideal output value) VDIFFERENTIAL (mV) 2.5 2.0 1.5 1.0 0.07 0.06 0.05 0.04 0.03 0.02 0.5 0.01 0 0 50 100 150 200 250 300 VSENSE (mV) 350 400 450 500 0 0 -16 -12 -8 -4 Submit Documentation Feedback 4 8 12 16 20 ... 76 80 Common-Mode Voltage (V) Figure 7. 6 1M Frequency (Hz) 20 VOUT (V) G = 50 35 Gain (dB) 30 G = 100 40 G = 50 35 Gain (dB) CLOAD = 1000pF G = 100 40 GAIN vs FREQUENCY 45 Figure 8. Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VS = +12V, VIN+ = 12V, and VSENSE = 100mV, unless otherwise noted. POSITIVE OUTPUT VOLTAGE SWING vs OUTPUT CURRENT QUIESCENT CURRENT vs OUTPUT VOLTAGE 3.5 12 11 VS = 12V 10 6 VS = 3V 5 Sourcing Current +25°C 4 3 -40°C Output stage is designed to source current. Current sinking capability is approximately 400mA. 2 1 +125°C 0 0 2.0 1.5 1.0 0.5 0 5 10 20 15 25 30 0 1 2 3 4 5 7 9 10 9.5 10.5 11.5 17 18 6 8 Output Current (mA) Output Voltage (V) Figure 9. Figure 10. QUIESCENT CURRENT vs COMMON-MODE VOLTAGE OUTPUT SHORT-CIRCUIT CURRENT vs SUPPLY VOLTAGE 34 VSENSE = 100mV 1.75 VS = 2.7V VS = 12V 1.50 IQ (mA) IQ (mA) -40°C +125°C 7 2.00 2.5 +25°C 8 Output Short-Circuit Current (mA) Output Voltage (V) 3.0 Sourcing Current 9 1.25 VS = 12V 1.00 VS = 2.7V VSENSE = 0mV 0.75 0.50 -16 -12 -8 -4 -40°C 30 +25°C 26 +125°C 22 18 14 10 6 0 4 8 12 16 20 24 28 32 36 2.5 3.5 4.5 5.5 6.5 7.5 8.5 VCM (V) Supply Voltage (V) Figure 11. Figure 12. STEP RESPONSE STEP RESPONSE G = 20 Output Voltage (50mV/div) Output Voltage (500mV/div) G = 20 VSENSE = 10mV to 20mV VSENSE = 10mV to 100mV Time (2ms/div) Time (2ms/div) Figure 13. Figure 14. Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 7 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VS = +12V, VIN+ = 12V, and VSENSE = 100mV, unless otherwise noted. STEP RESPONSE STEP RESPONSE G = 50 Output Voltage (50mV/div) Output Voltage (100mV/div) G = 20 VSENSE = 90mV to 100mV VSENSE = 10mV to 20mV Time (2ms/div) Time (5ms/div) Figure 15. Figure 16. STEP RESPONSE STEP RESPONSE G = 50 Output Voltage (1V/div) Output Voltage (100mV/div) G = 50 VSENSE = 90mV to 100mV VSENSE = 10mV to 100mV Time (5ms/div) Time (5ms/div) Figure 17. Figure 18. STEP RESPONSE COMPARATOR VOL vs ISINK 600 G = 100 Output Voltage (2V/div) 500 VOL (mV) 400 300 200 100 VSENSE = 10mV to 100mV 0 Time (10ms/div) 0 1 2 3 4 5 6 ISINK (mA) Figure 19. 8 Submit Documentation Feedback Figure 20. Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VS = +12V, VIN+ = 12V, and VSENSE = 100mV, unless otherwise noted. COMPARATOR TRIP POINT vs SUPPLY VOLTAGE COMPARATOR TRIP POINT vs TEMPERATURE 600 602 Comparator Trip Point (mV) 599 Reset Voltage (mV) 598 597 596 595 594 593 592 601 600 599 598 597 591 596 590 4 6 8 10 12 14 16 18 -50 0 -25 25 50 75 100 Supply Voltage (V) Temperature (°C) Figure 21. Figure 22. COMPARATOR PROPAGATION DELAY vs OVERDRIVE VOLTAGE COMPARATOR RESET VOLTAGE vs SUPPLY VOLTAGE 200 1.2 175 1.0 Reset Voltage (V) Propagation Delay (ns) 2 150 125 100 75 125 0.8 0.6 0.4 0.2 50 0 0 20 40 60 80 100 120 140 160 180 200 2 4 6 8 10 12 14 16 Overdrive Voltage (mV) Supply Voltage (V) Figure 23. Figure 24. COMPARATOR PROPAGATION DELAY vs TEMPERATURE COMPARATOR PROPAGATION DELAY 18 300 Propagation Delay (ns) 275 Input 200mV/div 250 225 200 Output 2V/div 175 150 125 -50 VOD = 5mV -25 0 25 50 75 100 2ms/div 125 Temperature (°C) Figure 25. Copyright © 2011, Texas Instruments Incorporated Figure 26. Submit Documentation Feedback Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 9 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com APPLICATIONS INFORMATION BASIC CONNECTIONS Figure 27 shows the basic connections of the INA200-Q1, INA201-Q1, and INA202-Q1. The input pins, VIN+ and VIN–, should be connected as closely as possible to the shunt resistor to minimize any resistance in series with the shunt resistance. Power-supply bypass capacitors are required for stability. Applications with noisy or high-impedance power supplies may require additional decoupling capacitors to reject power-supply noise. Connect bypass capacitors close to the device pins. POWER SUPPLY The input circuitry of the INA200-Q1, INA201-Q1, and INA202-Q1 can accurately measure beyond the power-supply voltage, V+. For example, the V+ power supply can be 5V, whereas the load power-supply voltage is up to +80V. The output voltage range of the OUT terminal, however, is limited by the voltages on the power-supply pin. ACCURACY VARIATIONS AS A RESULT OF VSENSE AND COMMON-MODE VOLTAGE The accuracy of the INA200-Q1, INA201-Q1, and INA202-Q1 current shunt monitors is a function of two main variables: VSENSE (VIN+ – VIN–) and common-mode voltage, VCM, relative to the supply voltage, VS. VCM is expressed as (VIN+ + VIN–)/2; however, in practice, VCM is seen as the voltage at VIN+ because the voltage drop across VSENSE is usually small. This section addresses the accuracy of these specific operating regions: • Normal Case 1: VSENSE ≥ 20mV, VCM ≥ VS • Normal Case 2: VSENSE ≥ 20mV, VCM < VS • Low VSENSE Case 1: VSENSE < 20mV, –16V ≤ VCM <0 • Low VSENSE Case 2: VSENSE < 20mV, 0V ≤ VCM ≤ VS • Low VSENSE Case 3: VSENSE < 20mV, VS < VCM ≤ 80V RSHUNT 3mW Load Supply -18V to +80V Load 5V Supply INA200 (G = 20) 1 V+ 2 OUT CBYPASS 0.01mF G VIN+ 8 VIN- 7 CMPOUT 6 RESET 5 RPULL-UP 4.7kW 0.6V Reference R1 3 CMPIN Comparator R2 4 GND Transparent/Reset Latch Figure 27. INA200-Q1 Basic Connections 10 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com Normal Case 1: VSENSE ≥ 20mV, VCM ≥ VS This region of operation provides the highest accuracy. Here, the input offset voltage is characterized and measured using a two-step method. First, the gain is determined by Equation 1. VOUT1 - VOUT2 G= 100mV - 20mV (1) larger-than-normal offset can appear at the current shunt monitor output with a typical maximum value of VOUT = 300mV for VSENSE = 0mV. As VSENSE approaches 20mV, VOUT returns to the expected output value with accuracy as specified in the Electrical Characteristics. Figure 28 illustrates this effect using the INA202-Q1 (Gain = 100). 2.0 where: 1.8 1.6 VOUT2 = Output Voltage with VSENSE = 20mV 1.4 Then the offset voltage is measured at VSENSE = 100mV and referred to the input (RTI) of the current shunt monitor, as shown in Equation 2. VOUT1 VOSRTI (Referred-To-Input) = - 100mV G (2) In the Typical Characteristics, the Output Error vs Common-Mode Voltage curve (Figure 8) shows the highest accuracy for the this region of operation. In this plot, VS = 12V; for VCM ≥ 12V, the output error is at its minimum. This case is also used to create the VSENSE ≥ 20mV output specifications in the Electrical Characteristics table. Normal Case 2: VSENSE ≥ 20mV, VCM < VS This region of operation has slightly less accuracy than Normal Case 1 as a result of the common-mode operating area in which the part functions, as seen in the Output Error vs Common-Mode Voltage curve (Figure 8). As noted, for this graph VS = 12V; for VCM < 12V, the Output Error increases as VCM becomes less than 12V, with a typical maximum error of 0.005% at the most negative VCM = –16V. Low VSENSE Case 1: VSENSE < 20mV, –16V ≤ VCM < 0; and Low VSENSE Case 3: VSENSE < 20mV, VS < VCM ≤ 80V Although the INA200-Q1 family of devices are not designed for accurate operation in either of these regions, some applications are exposed to these conditions. For example, when monitoring power supplies that are switched on and off while VS is still applied to the INA200-Q1, INA201-Q1, or INA202-Q1, it is important to know what the behavior of the devices will be in these regions. VOUT (V) VOUT1 = Output Voltage with VSENSE = 100mV 1.2 Actual 1.0 0.8 Ideal 0.6 0.4 0.2 0 0 2 4 6 8 10 12 14 16 18 20 VSENSE (mV) Figure 28. Example for Low VSENSE Cases 1 and 3 (INA202-Q1, Gain = 100) Low VSENSE Case 2: VSENSE < 20mV, 0V ≤ VCM ≤ VS This region of operation is the least accurate for the INA200-Q1 family. To achieve the wide input common-mode voltage range, these devices use two op amp front ends in parallel. One op amp front end operates in the positive input common-mode voltage range, and the other in the negative input region. For this case, neither of these two internal amplifiers dominates and overall loop gain is very low. Within this region, VOUT approaches voltages close to linear operation levels for Normal Case 2. This deviation from linear operation becomes greatest the closer VSENSE approaches 0V. Within this region, as VSENSE approaches 20mV, device operation is closer to that described by Normal Case 2. Figure 29 illustrates this behavior for the INA202-Q1. The VOUT maximum peak for this case is tested by maintaining a constant VS, setting VSENSE = 0mV and sweeping VCM from 0V to VS. The exact VCM at which VOUT peaks during this test varies from part to part, but the VOUT maximum peak is tested to be less than the specified VOUT tested limit. As VSENSE approaches 0mV, in these VCM regions, the device output accuracy degrades. A Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 11 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com 2.4 2.2 INA202 VOUT Tested Limit VCM1 2.0 Ideal 1.8 VCM2 1.6 VOUT (V) resistors in series with the inputs since the internal gain resistors can vary up to ±30%. (If gain accuracy is not important, then resistors can be added in series with the INA200-Q1, INA201-Q1, and INA202-Q1 inputs with two equal resistors on each input.) (1) 1.4 VCM3 1.2 OUTPUT VOLTAGE RANGE 1.0 0.8 VOUT tested limit at VSENSE = 0mV, 0 £ VCM1 £ VS. VCM4 0.6 VCM2, VCM3, and VCM4 illustrate the variance from part to part of the VCM that can cause maximum VOUT with VSENSE < 20mV. 0.4 0.2 0 0 2 4 6 8 10 12 14 16 18 20 22 24 VSENSE (mV) NOTE: (1) INA200 VOUT Tested Limit = 0.4V. INA201 VOUT Tested Limit = 1V. Figure 29. Example for Low VSENSE Case 2 (INA202-Q1, Gain = 100) SELECTING RS The value chosen for the shunt resistor, RS, depends on the application and is a compromise between small-signal accuracy and maximum permissible voltage loss in the measurement line. High values of RS provide better accuracy at lower currents by minimizing the effects of offset, while low values of RS minimize voltage loss in the supply line. For most applications, best performance is attained with an RS value that provides a full-scale shunt voltage range of 50mV to 100mV. Maximum input voltage for accurate measurements is 500mV. TRANSIENT PROTECTION The –16V to +80V common-mode range of the INA200-Q1, INA201-Q1, and INA202-Q1 is ideal for withstanding automotive fault conditions ranging from 12V battery reversal up to +80V transients, since no additional protective components are needed up to those levels. In the event that the INA200-Q1, INA201-Q1, and INA202-Q1 are exposed to transients on the inputs in excess of their ratings, then external transient absorption with semiconductor transient absorbers (such as zeners) will be necessary. Use of MOVs or VDRs is not recommended except when they are used in addition to a semiconductor transient absorber. Select the transient absorber such that it will never allow the INA200-Q1, INA201-Q1, and INA202-Q1 to be exposed to transients greater than +80V (that is, allow for transient absorber tolerance, as well as additional voltage due to transient absorber dynamic impedance). Despite the use of internal zener-type ESD protection, the INA200-Q1, INA201-Q1, and INA202-Q1 do not lend themselves to using external 12 Submit Documentation Feedback The output of the INA200-Q1, INA201-Q1, and INA202-Q1 is accurate within the output voltage swing range set by the power supply pin, V+. This performance is best illustrated when using the INA202-Q1 (a gain of 100 version), where a 100mV full-scale input from the shunt resistor requires an output voltage swing of +10V, and a power-supply voltage sufficient to achieve +10V on the output. INPUT FILTERING An obvious and straightforward location for filtering is at the output of the INA200-Q1, INA201-Q1, and INA202-Q1 series; however, this location negates the advantage of the low output impedance of the internal buffer. The only other option for filtering is at the input pins of the INA200-Q1, INA201-Q1, and INA202-Q1, which is complicated by the internal 5kΩ + 30% input impedance; this is illustrated in Figure 30. Using the lowest possible resistor values minimizes both the initial shift in gain and effects of tolerance. The effect on initial gain is given by Equation 3: Gain Error % = 100 - 100 ´ 5kW 5kW + RFILT (3) Total effect on gain error can be calculated by replacing the 5kΩ term with 5kΩ – 30%, (or 3.5kΩ) or 5kΩ + 30% (or 6.5kΩ). The tolerance extremes of RFILT can also be inserted into the equation. If a pair of 100Ω 1% resistors are used on the inputs, the initial gain error will be 1.96%. Worst-case tolerance conditions will always occur at the lower excursion of the internal 5kΩ resistor (3.5kΩ), and the higher excursion of RFILT – 3% in this case. Note that the specified accuracy of the INA200-Q1, INA201-Q1, and INA202-Q1 must then be combined in addition to these tolerances. While this discussion treated accuracy worst-case conditions by combining the extremes of the resistor values, it is appropriate to use geometric mean or root sum square calculations to total the effects of accuracy variations. COMPARATOR The INA200-Q1, INA201-Q1, and INA202-Q1 devices incorporate an open-drain comparator. This comparator typically has 2mV of offset and a 1.3μs (typical) response time. The output of the comparator latches and is reset through the RESET pin; see Figure 31. Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com RSHUNT << RFILTER 3mW VSUPPLY Load RFILTER < 100W INA200-INA202 V+ 1 OUT 2 CMPIN 3 GND 4 CFILTER 8 G 0.6V Reference RFILTER <100W VIN+ VIN7 f-3dB 6 CMPOUT f-3dB = Comparator 5 1 2p(2RFILTER)CFILTER RESET SO-14, TSSOP-14 Figure 30. Input Filter (Gain Error—1.5% to –2.2%) 0.6V VIN 0V CMPOUT RESET Figure 31. Comparator Latching Capability Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 13 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com Shunt Option 1 Shunt Option 2 Supply R3 To VIN+ To VIN- To VIN- To VIN+ 4.5V to 5.5V R4 Q1 2N3904 Load INA200 (G = 20) INA201 (G = 50) INA202 (G = 100) 1 V+ To VIN+ 2 OUT G VIN+ 8 VIN- 7 CMPOUT 6 RESET 5 Shunt Option 3 From Shunt Option 1, 2, or 3 To VIN- 0.6V Reference R1 3 CMPIN Comparator R2 4 GND RESET NOTE: Q1 cascodes the comparator output to drive a high-side FET (the 2N3904 shown is good up to 60V). The shunt could be located in any one of the three locations shown. The latching capability should be used in shutdown applications to prevent oscillation at the trip point. Figure 32. High-Side Switch Over-Current Shutdown 14 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com Shunt Option 1 Supply To VIN+ 4.5V to 5.5V To VIN- Load To VIN+ INA200 (G = 20) INA201 (G = 50) INA202 (G = 100) 1 V+ 2 OUT G R4 2.2kW VIN+ 8 VIN- 7 From Shunt Option 1, 2, or 3 To VIN- R1 22kW 0.6V Reference R1 Shunt Option 2 To VIN+ Shunt Option 3 3 CMPIN Comparator R2 4 GND CMPOUT 6 RESET 5 Q1 2N3904 To VIN- RESET NOTE: In this case, Q1 is used to invert the comparator output. Figure 33. Low-Side Switch Over-Current Shutdown Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 15 INA200-Q1 INA201-Q1 INA202-Q1 SBOS558 – APRIL 2011 www.ti.com RSHUNT Supply 4.5V to 5.5V INA200 (G = 20) INA201 (G = 50) INA202 (G = 100) 1 V+ 2 OUT G VIN+ 8 VIN- 7 CMPOUT 6 RESET 5 R5 2.2kW 0.6V Reference R1 3 CMPIN Comparator R2 4 GND RESET INA200 (G = 20) INA201 (G = 50) INA202 (G = 100) 1 V+ 2 OUT G R6 2.2kW VIN+ 8 VIN- 7 CMPOUT 6 RESET 5 0.6V Reference R3 3 CMPIN Comparator R4 4 GND CMPOUT R7 200kW RESET NOTE: It is possible to set different limits for each direction. Figure 34. Bidirectional Over-Current Comparator 16 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): INA200-Q1 INA201-Q1 INA202-Q1 PACKAGE OPTION ADDENDUM www.ti.com 16-Aug-2012 PACKAGING INFORMATION Orderable Device INA201AQDGKRQ1 Status (1) Package Type Package Drawing ACTIVE VSSOP DGK Pins Package Qty 8 2500 Eco Plan (2) Green (RoHS & no Sb/Br) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) CU NIPDAU Level-2-260C-1 YEAR (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF INA201-Q1 : • Catalog: INA201 NOTE: Qualified Version Definitions: • Catalog - TI's standard catalog product Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 16-Aug-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device INA201AQDGKRQ1 Package Package Pins Type Drawing VSSOP DGK 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 12.4 Pack Materials-Page 1 5.3 B0 (mm) K0 (mm) P1 (mm) 3.4 1.4 8.0 W Pin1 (mm) Quadrant 12.0 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 16-Aug-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) INA201AQDGKRQ1 VSSOP DGK 8 2500 367.0 367.0 35.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily performed. TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions. Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use of any TI components in safety-critical applications. In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and requirements. Nonetheless, such components are subject to these terms. No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties have executed a special agreement specifically governing such use. Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and regulatory requirements in connection with such use. TI has specifically designated certain components which meet ISO/TS16949 requirements, mainly for automotive use. Components which have not been so designated are neither designed nor intended for automotive use; and TI will not be responsible for any failure of such components to meet such requirements. Products Applications Audio www.ti.com/audio Automotive and Transportation www.ti.com/automotive Amplifiers amplifier.ti.com Communications and Telecom www.ti.com/communications Data Converters dataconverter.ti.com Computers and Peripherals www.ti.com/computers DLP® Products www.dlp.com Consumer Electronics www.ti.com/consumer-apps DSP dsp.ti.com Energy and Lighting www.ti.com/energy Clocks and Timers www.ti.com/clocks Industrial www.ti.com/industrial Interface interface.ti.com Medical www.ti.com/medical Logic logic.ti.com Security www.ti.com/security Power Mgmt power.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense Microcontrollers microcontroller.ti.com Video and Imaging www.ti.com/video RFID www.ti-rfid.com OMAP Mobile Processors www.ti.com/omap TI E2E Community e2e.ti.com Wireless Connectivity www.ti.com/wirelessconnectivity Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2012, Texas Instruments Incorporated