INA241A2IDDFR

INA241A, INA241B SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 INA241x –5 V to 110 V, Bidirectional, Ultra-Precise Current Sense Amplifier With Enhanced PWM Rejection 1 Features 3 Description • The INA241x is an ultra-precise, bidirectional current sense amplifier than can measure voltage drops across shunt resistors over a wide common-mode range from –5 V to 110 V, independent of the supply voltage. The high-precision current measurement is achieved through a combination of low offset voltage (±10 µV, maximum), small gain error (±0.01%, maximum) and a high DC CMRR (typical 166 dB). The INA241x is designed for high voltage, bidirectional measurements in switching systems that see large common-mode voltage transients at the device's inputs. The enhanced PWM rejection circuitry inside the INA241x ensures minimal signal disturbance at the output due to the common-mode voltage transitions at the input. • • • • • • • • • Enhanced PWM rejection optimized for systems subject to switching common-mode voltages – Supports switching frequencies up to 125 kHz Wide common-mode voltage: – Operational voltage: −5 V to +110 V – Survival voltage: −20 V to +120 V Bidirectional operation High small signal bandwidth: 1.1 MHz (at all gains) Slew rate: 8 V/µs Step response settling time to 1%: 1 µs Excellent CMRR – 166 dB DC-CMRR – 104 dB AC-CMRR at 100 kHz – 89 dB AC-CMRR at 1 MHz Accuracy: – Gain error (maximum) • Version A: ±0.01%, ±1 ppm/°C drift • Version B: ±0.1%, ±5 ppm/°C drift – Offset voltage (maximum) • Version A: ±10 µV, ±0.1 µV/°C drift • Version B: ±150 µV, ±0.5 µV/°C drift Available gains: – INA241A1, INA241B1 : 10 V/V – INA241A2, INA241B2 : 20 V/V – INA241A3, INA241B3 : 50 V/V – INA241A4, INA241B4 : 100 V/V – INA241A5, INA241B5 : 200 V/V Package options: SOT23-8, VSSOP-8 2 Applications • • • • • • Motor drives Solenoids and actuators Injection molding machine Cordless power tools Medical cordless tools Drone propeller speed control The INA241x operates from a single 2.7 V to 20 V supply, drawing 2.5 mA of supply current. The INA241x is available in five gain options: 10 V/V, 20 V/V, 50 V/V, 100 V/V, and 200 V/V. Multiple gain options allow for optimization between available shunt resistor values and wide output dynamic range requirements. The INA241x is specified over operating temperature range of −40°C to +125°C and is offered in a spacesaving 8-pin SOT-23 and 8-pin VSSOP package. Device Information(1) PART NUMBER INA241A INA241B (1) (2) PACKAGE BODY SIZE (NOM) SOT-23 (8) 2.90 mm × 1.60 mm VSSOP (8)(2) 3.00 mm × 3.00 mm For all available packages, see the package option addendum at the end of the data sheet. Package is preview only Supply (2.7 V to 20 V) IN± + IN+ OUT REF2 REF1 Typical Application - Inline Motor Control An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 Table of Contents 1 Features............................................................................1 2 Applications..................................................................... 1 3 Description.......................................................................1 4 Revision History.............................................................. 2 5 Device Comparison......................................................... 3 6 Pin Configuration and Functions...................................3 7 Specifications.................................................................. 4 7.1 Absolute Maximum Ratings........................................ 4 7.2 ESD Ratings............................................................... 4 7.3 Recommended Operating Conditions.........................4 7.4 Thermal Information....................................................4 7.5 Electrical Characteristics.............................................5 7.6 Typical Characteristics................................................ 8 8 Detailed Description......................................................15 8.1 Overview................................................................... 15 8.2 Functional Block Diagram......................................... 15 8.3 Feature Description...................................................15 8.4 Device Functional Modes..........................................17 9 Application and Implementation.................................. 22 9.1 Application Information............................................. 22 9.2 Typical Application.................................................... 23 9.3 Power Supply Recommendations.............................25 9.4 Layout....................................................................... 25 10 Device and Documentation Support..........................26 10.1 Receiving Notification of Documentation Updates..26 10.2 Support Resources................................................. 26 10.3 Trademarks............................................................. 26 10.4 Electrostatic Discharge Caution..............................26 10.5 Glossary..................................................................26 11 Mechanical, Packaging, and Orderable Information.................................................................... 26 4 Revision History Changes from Revision * (March 2022) to Revision A (August 2022) Page • Changed data sheet status from Advanced Information to Production Data......................................................1 2 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 5 Device Comparison Table 5-1. Device Comparison DEVICE NAME GAIN INA241A1, INA241B1 10 V/V INA241A2, INA241B2 20 V/V INA241A3, INA241B3 50 V/V INA241A4, INA241B4 100 V/V INA241A5, INA241B5 200 V/V 6 Pin Configuration and Functions IN± 1 8 IN+ GND 2 7 REF1 REF2 3 6 Vs NC 4 5 OUT IN± 1 8 IN+ GND 2 7 REF1 REF2 3 6 Vs NC 4 5 OUT Not to scale Not to scale Figure 6-1. INA241x: DDF Package 8-Pin SOT-23 Top View 1. This package is preview only. Figure 6-2. INA241x: DGK Package 8-Pin VSSOP Top View Table 6-1. Pin Functions PIN NAME NO. TYPE DESCRIPTION GND 2 Ground Ground IN+ 8 Input Current-sense amplifier positive input. For high-side applications, connect to bus-voltage side of sense resistor. For low-side applications, connect to load side of sense resistor. IN– 1 Input Current-sense amplifier negative input. For high-side applications, connect to load side of sense resistor. For low-side applications, connect to ground side of sense resistor. NC 4 Ground Reserved. Connect to ground. OUT 5 Output Output voltage REF1 7 Input Reference 1 voltage. Connect to voltage potential from 0 V to VS; see Adjusting the Output With the Reference Pins for connection options. REF2 3 Input Reference 2 voltage. Connect to voltage potential from 0 V to VS; see Adjusting the Output With the Reference Pins for connection options. VS 6 Power Power supply, 2.7 V to 20 V Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 3 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 7 Specifications 7.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)(1) MIN MAX Supply voltage (VS) Analog inputs, VIN+, VIN- (2) V −30 30 V Common-mode −20 120 V GND − 0.3 VS + 0.3 V GND – 0.3 Vs + 0.3 V –55 150 °C 150 °C 150 °C Output TA Operating temperature TJ Junction temperature Tstg Storage temperature (2) 22 Differential (VIN+) − (VIN-) REF1, REF2, NC inputs (1) UNIT –65 Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute Maximum Ratings do not imply functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions. If used outside the Recommended Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully functional, and this may affect device reliability, functionality, performance, and shorten the device lifetime. VIN+ and VIN– are the voltages at the IN+ and IN– pins, respectively. 7.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/ JEDEC JS-001, all pins(1) ±2000 Charged device model (CDM), per ANSI/ESDA/ JEDEC JS-002, all pins(2) ±1000 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 7.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN NOM MAX VCM Common-mode input range −5 48 110 UNIT V VS Operating supply range 2.7 5 20 V TA Ambient temperature –40 125 °C 7.4 Thermal Information INA241 THERMAL METRIC(1) DGK (VSSOP)(2) 8 PINS 8 PINS 129.7 TBD °C/W 58 TBD °C/W UNIT RθJA Junction-to-ambient thermal resistance RθJC(top) Junction-to-case (top) thermal resistance RθJB Junction-to-board thermal resistance 52.6 TBD °C/W ΨJT Junction-to-top characterization parameter 2.3 TBD °C/W ΨJB Junction-to-board characterization parameter 52.3 TBD °C/W (1) (2) 4 DDF (SOT23) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. This package is preview only. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 7.5 Electrical Characteristics at TA = 25 °C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUT VCM CMRR Common-mode input range(1) Common-mode rejection ratio, inputreferred VIN+, VIN– = –5 V to 110 V, VSENSE = 0 mV TA = –40°C to 125°C –5 VIN+, VIN– = –5 V to 110 V, VSENSE = 0 mV TA = –40°C to 125°C, INA241A 150 166 VIN+, VIN– = –5 V to 110 V, VSENSE = 0 mV TA = –40°C to 125°C, INA241B 120 130 f = 50 kHz Vos dVos/dT PSRR IB Offset voltage, input-referred Offset voltage drift, input-referred Power-supply rejection ratio, inputreferred Input bias current 110 V dB 105 VSENSE = 0 mV, INA241A1 ±5 ±20 VSENSE = 0 mV, INA241A2 ±3 ±15 VSENSE = 0 mV, INA241A3, INA241A4 ±3 ±10 VSENSE = 0 mV, INA241A5 ±2 ±8 VSENSE = 0 mV, INA241B ±25 ±150 TA = –40°C to 125°C, INA241A1 ±50 ±250 TA = –40°C to 125°C, INA241A2 ±30 ±150 TA = –40°C to 125°C, INA241A3, INA241A4, INA241A5 ±20 ±100 TA = –40°C to 125°C, INA241B ±100 ±500 VS = 2.7 V to 20 V, VSENSE = 0 mV, VREF1 = VREF2 = 1V, TA = –40°C to 125°C, INA241A1 ±0.2 ±1 VS = 2.7 V to 20 V, VSENSE = 0 mV, VREF1 = VREF2 = 1V, TA = –40°C to 125°C, INA241A2 ±0.1 ±0.75 µV nV/°C µV/V VS = 2.7 V to 20 V, VSENSE = 0 mV, VREF1 = VREF2 = 1V, TA = –40°C to 125°C, INA241A3, INA241A4, INA241A5 ±0.06 ±0.5 VS = 2.7 V to 20 V, VSENSE = 0 mV, VREF1 = VREF2 = 1V, TA = –40°C to 125°C, INA241B ±1 ±10 35 45 uA VS V IB+, IB–, VSENSE=0 mV Reference input range 25 0 OUTPUT G Gain A1, B1 Devices 10 V/V A2, B2 Devices 20 V/V A3, B3 Devices 50 V/V A4, B4 Devices 100 V/V A5, B5 Devices 200 V/V Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 5 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 at TA = 25 °C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) PARAMETER TEST CONDITIONS Gain Error GERR Gain Error Drift TYP MAX (GND + 50 mV) < VOUT < (VS - 200 mV), INA241A1, INA241A2, INA241A3 ±0.002 ±0.01 (GND + 50 mV) < VOUT < (VS - 200 mV), INA241A4, INA241A5 ±0.003 ±0.015 (GND + 50 mV) < VOUT < (VS - 200 mV), INA241B ±0.02 ±0.1 TA = –40°C to +125°C, INA241A1, INA241A2, INA241A3 ±0.05 ±1 UNIT % TA = –40°C to +125°C, INA241A4, INA241A5 ±0.1 ±2 ppm/°C TA = –40°C to +125°C, INA241B ±0.2 ±5 Non-Linearity Error No sustained oscillations, No isolation resistor Maximum Capacitive Load MIN ±0.001 % 1 nF VOLTAGE OUTPUT Swing to VS Power Supply Rail RL = 10 kΩ to GND, TA = –40°C to +125°C Swing to Ground RL = 10 kΩ to GND, VSENSE = 0 mV, VREF1 = VREF2 = 0 V, TA = –40°C to +125°C VS − 0.07 VS − 0.2 8 20 VREF1 = VREF2 = 0.5 V to 4.5 V, TA = –40°C to +125°C, INA241A1 ±1 ±2.5 VREF1 = VREF2 = 0.5 V to 4.5 V, TA = –40°C to +125°C, INA241A2, INA241A3, INA241A4, INA241A5 ±0.5 ±1.5 VREF1 = VREF2 = 0.5 V to 4.5 V, TA = –40°C to +125°C, INA241B, ±10 ±20 VOUT = |(VREF1 + VREF2)| / 2 at VSENSE =0 mV, VREF1 = VS, VREF2 = GND VREF1 = GND, VREF2 = VS TA = –40°C to +125°C, INA241A1, INA241A2 ±0.002 ±0.005 VOUT = |(VREF1 + VREF2)| / 2 at VSENSE =0 mV, VREF1 = VS, VREF2 = GND VREF1 = GND, VREF2 = VS TA = –40°C to +125°C, INA241A3, INA241A4, INA241A5 ±0.002 ±0.01 VOUT = |(VREF1 + VREF2)| / 2 at VSENSE =0 mV, VREF1 = VS, VREF2 = GND VREF1 = GND, VREF2 = VS TA = –40°C to +125°C, , INA241B ±0.02 ±0.15 V mV REFERENCE INPUT RVRR Reference voltage rejection ratio, inputreferred Reference divider accuracy µV/V % FREQUENCY RESPONSE BW Bandwidth Settling time SR 6 Slew Rate All Gains, −3dB Bandwidth 1.1 MHz VIN+, VIN– = 48 V, VOUT = 0.5 V to 4.5 V, Output settles to 0.5% 1.5 µs VIN+, VIN– = 48 V, VOUT = 0.5 V to 4.5 V, Output settles to 1% 1 µs VIN+, VIN– = 48 V, VOUT = 0.5 V to 4.5 V, Output settles to 5% 0.5 µs Rising Submit Document Feedback 8 V/µs Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 at TA = 25 °C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT NOISE (Input referred) Voltage noise density A1, B1 Devices 62 A2, B2 Devices 49 A3, B3 Devices 39 A4, B4 Devices 36 A5, B5 Devices 28 nV/√Hz POWER SUPPLY VS Supply Voltage IQ Quiescent current 2.7 VSENSE = 0 mV 2.5 VSENSE = 0 mV, TA = –40°C to+125°C 20 V 3 mA 3.2 mA 125 °C TEMPERATURE TA (1) Specified Range –40 Common-mode voltage at both VIN+ and VIN- must not exceed the specified common-mode input range. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 7 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 7.6 Typical Characteristics -21 -19 -17 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 -10.5 -9.5 -8.5 -7.5 -6.5 -5.5 -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 Population Population at TA = 25°C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) Input Offset Voltage ( V) Input Offset Voltage ( V) Figure 7-1. INA241A1 Input Offset Production Distribution -4.2 -3.8 -3.4 -3 -2.6 -2.2 -1.8 -1.4 -1 -0.6 -0.2 0.2 0.6 1 1.4 1.8 2.2 2.6 3 3.4 3.8 4.2 -4.2 -3.8 -3.4 -3 -2.6 -2.2 -1.8 -1.4 -1 -0.6 -0.2 0.2 0.6 1 1.4 1.8 2.2 2.6 3 3.4 3.8 4.2 Population Population Figure 7-2. INA241A2 Input Offset Production Distribution Input Offset Voltage ( V) Input Offset Voltage ( V) Figure 7-3. INA241A3 and INA241A4 Input Offset Production Distribution Figure 7-4. INA241A5 Input Offset Production Distribution 12 G = 10 G = 20 G = 50 G = 100 G = 200 Population Input Offset Voltage ( V) 8 4 0 -4 136 120 88 104 72 56 40 8 24 -8 -24 -40 -56 -72 -88 -104 -120 -136 -8 -12 -50 -25 Input Offset Voltage ( V) 8 25 50 75 Temperature ( C) 100 125 150 INA241A . Figure 7-5. All Gains INA241B Input Offset Production Distribution 0 Figure 7-6. Input Offset Voltage vs Temperature Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 7.6 Typical Characteristics (continued) at TA = 25°C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) Common-Mode Rejection Ratio (nV/V) 10 8 6 4 2 0 -2 -4 G = 10 G = 20 G = 50 G = 100 G = 200 -6 -8 -10 -50 -25 0 25 50 75 Temperature ( C) 100 125 150 INA241A INA241A Figure 7-7. Common-Mode Rejection Ratio vs Temperature Figure 7-8. Common-Mode Rejection Ratio vs Frequency 50 40 Population 20 10 0 -10 10 G = 10 G = 20 G = 50 G = 100 G = 200 100 1k 10k 100k Frequency (Hz) 1M -10.5 -9.5 -8.5 -7.5 -6.5 -5.5 -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 Gain (dB) 30 10M Gain Error (m%) . Figure 7-9. Gain vs Frequency 1 % = 1000 m% -10.5 -9.5 -8.5 -7.5 -6.5 -5.5 -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 -63 -57 -51 -45 -39 -33 -27 -21 -15 -9 -3 3 9 15 21 27 33 39 45 51 57 63 Population Population Figure 7-10. INA241A1, INA241A2 and INA241A3 Gain Error Production Distribution Gain Error (m%) Gain Error (m%) 1 % = 1000 m% 1 % = 1000 m% Figure 7-11. INA241A4 and INA241A5 Gain Error Production Distribution Figure 7-12. All Gains INA241B Gain Error Production Distribution Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 9 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 7.6 Typical Characteristics (continued) at TA = 25°C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) 0.5 G = 10 G = 20 G = 50 G = 100 G = 200 30 Gain Error (m ) 20 10 0 -10 -20 -30 -40 -50 -25 0 25 50 75 Temperature ( C) 100 125 Power-Supply Rejection Ratio ( V/V) 40 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.4 -0.5 -50 150 G = 10 G = 20 G = 50 G = 100 G = 200 -0.3 -25 0 INA241A 25 50 75 Temperature ( C) 100 125 150 INA241A Figure 7-13. Gain Error vs Temperature Figure 7-14. Power-Supply Rejection Ratio vs Temperature Power-Supply Rejection Ratio (dB) 160 G = 10 G = 20 G = 50 to 200 140 120 100 80 60 40 20 1 10 100 1k 10k Frequency (Hz) 100k 1M 10M VSENSE = 0 V INA241A Figure 7-15. Power-Supply Rejection Ratio vs Frequency Figure 7-16. Input Bias Current vs Common-Mode Voltage 50 400 320 30 VS = 2.7V to 20V, VCM = 110V VS = 2.7V to 20V, VCM = 48V VS = 2.7V to 20V, VCM = -5V VS = 0V, VCM = 110V 20 10 Input Bias Current ( A) Input Bias Current ( A) 40 240 IB+ IBIB+, VS = 0V IB-, VS = 0V 160 80 0 -80 -160 0 -240 -10 -50 -25 0 25 50 75 Temperature ( C) 100 125 Figure 7-17. Input Bias Current vs Temperature 10 150 -320 -2000 -1500 -1000 -500 0 500 VSENSE (mV) 1000 1500 2000 Figure 7-18. INA241x1 Input Bias Current vs VSENSE Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 7.6 Typical Characteristics (continued) at TA = 25°C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) 250 150 IB+ IBIB+, VS = 0V IB-, VS = 0V 150 IB+ IBIB+, VS = 0V IB-, VS = 0V 125 Input Bias Current ( A) Input Bias Current ( A) 200 100 50 0 -50 -100 -150 100 75 50 25 0 -25 -50 -200 -1000 -750 -500 -250 0 250 VSENSE (mV) 500 750 -75 -400 1000 Figure 7-19. INA241x2 Input Bias Current vs VSENSE -200 -100 0 100 VSENSE (mV) 200 300 400 Figure 7-20. INA241x3 and INA241x4 Input Bias Current vs VSENSE VS 84 IB+ IBIB+, VS = 0V IB-, VS = 0V VS - 0.6 Output Voltage (V) 60 48 36 24 12 VS - 0.9 VS - 1.2 GND + 1.2 GND + 0.9 0 GND + 0.6 -12 GND + 0.3 -24 -100 125 C 25 C -40 C VS - 0.3 Output Voltage (V) 72 Input Bias Current ( A) -300 GND -75 -50 -25 0 25 VSENSE (mV) 50 75 0 100 . 2.5 5 Output Current (mA) 7.5 10 VS = 2.7 V Figure 7-21. INA241x5 Input Bias Current vs VSENSE Figure 7-22. Output Voltage vs Output Current Output Impedance ( ) 200 100 10 1 0.1 0.01 10 100 1k 10k 100k Frequency (Hz) 1M 10M VS = 5 V to 20 V . Figure 7-23. Output Voltage vs Output Current Figure 7-24. Output Impedance vs Frequency Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 11 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 7.6 Typical Characteristics (continued) 0 20 -0.1 15 Swing to GND (mV) Swing to VS (V) at TA = 25°C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) -0.2 -0.3 10 5 VS = 2.7V VS = 5V VS = 20V -0.4 -50 -25 0 VS = 20V VS = 5V VS = 2.7V 25 50 75 Temperature ( C) 100 125 0 -50 150 VREF1 = VREF2 = 0 V, . VSENSE = 0 V 100 125 150 RL = 10 kΩ to GND Input-Referred Voltage Noise (200 nV/div) Input-Referred Voltage Noise (nV/ Hz) 80 70 60 50 40 30 G = 10 G = 20 G = 50 G = 100 G = 200 10 10 25 50 75 Temperature ( C) Figure 7-26. Swing to GND vs Temperature 100 1 0 RL = 10 kΩ to GND Figure 7-25. Swing to Supply vs Temperature 20 -25 100 1k 10k Frequency (Hz) 100k 1M 10M Time (1 s/div) Figure 7-28. 0.1 Hz to 10 Hz Voltage Noise Figure 7-27. Input Referred Noise vs Frequency 40 VS = 20V, Sinking VS = 20V, Sourcing VS = 5V, Sinking VS = 5V, Sourcing VS = 2.7V, Sinking VS = 2.7V, Sourcing Short Circuit Current (mA) 35 30 25 20 15 10 5 -50 -25 0 25 50 75 Temperature ( C) 100 125 150 . Figure 7-29. Short-Circuit Current vs Temperature 12 VSENSE = 0 V Figure 7-30. Quiescent Current vs Temperature Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 7.6 Typical Characteristics (continued) at TA = 25°C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) 3 3 2.8 Quiescent Current (mA) Quiescent Current (mA) 2.5 2 1.5 1 125 C 25 C -40 C 0.5 2.5 5 7.5 10 12.5 Supply Voltage (V) 15 17.5 2.4 2.2 2 1.8 VS = 20V VS = 5V VS = 2.7V 1.6 0 0 2.6 1.4 -20 20 0 20 40 60 80 Common-Mode Voltage (V) 100 120 VREF1 = VREF2 = 0 V, . VSENSE = 0 V . Figure 7-31. Quiescent Current vs Supply Voltage Input Voltage (100 V/div) Output Voltage (10 mV/div) Input Voltage Output Voltage Output Voltage (0.2 V/div) Common-Mode Voltage (10 V/div) Common-Mode Voltage Output Voltage Figure 7-32. Quiescent Current vs Common-Mode Voltage Time (2 s/div) Time (500 ns/div) VCM = -5 V to 110 V, INA241A4 VSENSE = 0 V . Figure 7-33. Common-Mode Voltage Fast Transient Pulse Figure 7-34. Small Step Response Output Voltage (0.5 V/div) Supply Voltage (0.5 V/div) Input Voltage (4 mV/div) Output Voltage (0.4 V/div) Input Voltage Output Voltage Supply Voltage Output Voltage 0V 0V Time (5 s/div) Time (500 ns/div) . INA241A4 Figure 7-35. Large Step Response Figure 7-36. Start-Up Response Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 13 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 7.6 Typical Characteristics (continued) Output Voltage (0.5 V/div) Supply Voltage (0.5 V/div) at TA = 25°C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = VIN– = 48 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) Supply Voltage Output Voltage 0V 0V Time (20 s/div) Figure 7-37. Brownout Recovery 14 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 8 Detailed Description 8.1 Overview The INA241x is a high-side, inline, or low-side bidirectional, high-speed current-sense amplifier that offers a wide common-mode range, precision, zero-drift topology, excellent common-mode rejection ratio (CMRR), and features enhanced pulse width modulation (PWM) rejection at the inputs of the device. Enhanced PWM rejection reduces the effect of common-mode transients that can propagate to the output signal that are associated with PWM input signals. Multiple gain versions are available to allow for the optimization of the desired full-scale output voltage based on the target current range expected in the application. 8.2 Functional Block Diagram VS IN– IN+ PWM Rejection – OUT + REF2 REF1 GND 8.3 Feature Description 8.3.1 Amplifier Input Common-Mode Signal The INA241x supports large input common-mode voltages from –5 V to +110 V. The internal topology of the INA241x allows the common-mode range to exceed the power-supply voltage (VS). This allows for the INA241x to be used for low-side, inline, and high-side current-sensing applications that extend beyond the supply range of 2.7 V to 20 V. 8.3.1.1 Enhanced PWM Rejection Operation The enhanced PWM rejection feature of the INA241x provides increased attenuation of large common-mode ΔV/Δt transients. Large ΔV/Δt common-mode transients associated with PWM signals are employed in applications such as motor or solenoid drive and switching power supplies. The disturbances that can occur at the output of a current sense amplifier from common-mode transients causes erroneous measurements and impose limitations when the output is valid. The INA241x is designed with high common-mode rejection techniques to reduce large ΔV/Δt transients before the system is disturbed. As a result, this makes system design simple with INA241x. The high AC CMRR, in conjunction with signal bandwidth, allows the INA241x to minimize output disturbances and ringing during common-mode transitions when compared against traditional current-sensing amplifiers. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 15 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 100 3 80 2.75 70 2.5 60 2.25 50 2 40 1.75 30 1.5 20 1.25 10 1 0 Output Voltage (V) Common-mode Voltage (V) 90 3.25 Common-mode Voltage Output Voltage 0.75 -10 0.5 -20 0.25 Time (1s/div) Figure 8-1. Enhanced PWM Rejection Performance Figure 8-1 shows the INA241x PWM enhancement performance. When INA241x senses the large commonmode ΔV/Δt transients, it holds the output for 1 μs, thereby preventing the common-mode disturbance from propagating to the output. If another common-mode transient occurs during the following 3 μs, INA241x relies on high BW and AC CMMR to attenuate the effect of common-mode transient. The enhanced PWM rejection is achieved up to a PWM frequency of 125 kHz or if common-mode transient edges are separated by a 3 μs interval or more. 8.3.1.2 Input-Signal Bandwidth The INA241x is available with several gain options including 10 V/V, 20 V/V, 50 V/V, 100 V/V, and 200 V/V. The unique multistage design enables the amplifier to achieve high bandwidth of 1.1 MHz at all gains. This high bandwidth provides the throughput and fast response that is required for the rapid detection and processing of over-current events. 8.3.1.3 Low Input Bias Current The INA241x inputs draw 35 µA (typical) bias current per input pin at common-mode voltages as high as 110 V, which enables precision current sensing on applications that require lower current leakage. Unlike many high voltage current sense amplifiers whose input bias currents are proportional to the common-mode voltage, the input bias current of the INA241x remains constant over the entire common-mode voltage range. 8.3.1.4 Low VSENSE Operation The INA241x features high performance operation across the entire valid VSENSE range. The zero-drift input architecture of the INA241x provides the low offset voltage and low offset drift needed to measure low VSENSE levels accurately across the wide operating temperature of –40°C to +125°C. Low VSENSE operation is particularly beneficial when using low ohmic shunts for low current measurements, as power losses across the shunt are significantly reduced. 8.3.1.5 Wide Fixed Gain Output The INA241x maximum gain error is ±0.01% at room temperature, with a maximum drift of ±1 ppm/°C over the full temperature range of –40°C to +125°C. The INA241x is available in multiple gain options of 10 V/V, 20 V/V, 50 V/V, 100 V/V, and 200 V/V, which the system designer should select based on their desired signal-to-noise ratio and other system requirements, such as the dynamic current range and full-scale output voltage target. 8.3.1.6 Wide Supply Range The INA241x operates with a wide supply range from 2.7 V to 20 V. While the input common-mode voltage range of the INA241x is independent of the supply voltage, the output voltage is bound by the supply voltage 16 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 applied to the device. The output voltage can range from as low as 20 mV to as high as 200 mV below the supply voltage. 8.4 Device Functional Modes 8.4.1 Adjusting the Output With the Reference Pins Figure 8-2 shows a test circuit for reference-divider accuracy. The INA241x output is configurable to allow for unidirectional or bidirectional operation. VS VS IN± ± IN+ OUT + REF2 REF1 GND Figure 8-2. Test Circuit For Reference Divider Accuracy The output voltage is set by applying a voltage or voltages to the reference voltage inputs, REF1 and REF2. The reference inputs are connected to an internal gain network. There is no operational difference between the two reference pins. The resistor network connected to the two reference pins are designed with ultra-precision and matching. Output is set accurately at the mid-point voltage between the voltages applied to reference voltage inputs, when current-sense input voltage is 0 V as shown in Equation 1 . In most bidirectional applications, one reference input is connected to the positive supply and the other reference input is connected to the negative supply (GND pin) to set the output voltage to mid-supply. V +  V VOUT = G × VIN + −  VIN − + REF1 2 REF2 (1) 8.4.2 Reference Pin Connections for Unidirectional Current Measurements Unidirectional operation allows current measurements through a resistive shunt in one direction. For unidirectional operation, connect the device reference pins together and then to the negative rail (see the Ground Referenced Output section) or the positive rail (see the VS Referenced Output section). The required differential input polarity depends on the reference input setting. The amplifier output moves away from the referenced rail proportional to the current passing through the external shunt resistor. If the amplifier reference pins are connected to the positive rail, then the input polarity must be negative to move the amplifier output down (towards ground). If the amplifier reference pins are connected to ground, then the input polarity must be positive to move the amplifier output up (towards supply). The following sections describe how to configure the output for unidirectional operation cases. 8.4.2.1 Ground Referenced Output When using the INA241x in a unidirectional mode with a ground referenced output, both reference inputs are connected to ground. This configuration takes the output to ground when there is a 0 V differential at the input (see Figure 8-3). Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 17 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 VS VS IN± ± OUT + REF2 IN+ REF1 GND Figure 8-3. Ground Referenced Output 8.4.2.2 VS Referenced Output Unidirectional mode with a VS referenced output is configured by connecting both reference pins to the positive supply. Use this configuration for circuits that require power up and stabilization of the amplifier output signal and other control circuitry before power is applied to the load (see Figure 8-4). VS VS IN± ± OUT + REF2 IN+ REF1 GND Figure 8-4. VS Referenced Output 8.4.3 Reference Pin Connections for Bidirectional Current Measurements The INA241x measures the differential voltage developed by current flowing through a resistor, commonly referred to as a current-sensing resistor or a current-shunt resistor. The INA241x can operate in either a unidirectional or bidirectional mode based on the voltage potential placed on the reference pins. The linear range of the output stage is limited to how close the output voltage can approach ground as well the supply voltage as described in the Specifications. The selection of the current-sensing resistor along with the current range to be measured, selection of the gain option, as well as the voltage applied to the reference pins should be chosen to keep the INA241x within the linear region of operation. 8.4.3.1 Output Set to External Reference Voltage Connecting both pins together and then to a reference voltage results in an output voltage equal to the reference voltage for the condition of shorted input pins or a 0 V differential input. Figure 8-5 shows this configuration. The output voltage decreases below the reference voltage when the IN+ pin is negative relative to the IN– pin and increases when the IN+ pin is positive relative to the IN– pin. This technique is the most accurate way to bias the output to a precise voltage. 18 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 VS VS IN± ± OUT + IN+ REF2 REF1 REF5025 2.5-V Reference GND Copyright © 2016, Texas Instruments Incorporated Figure 8-5. External Reference Output 8.4.3.2 Output Set to Mid-Supply Voltage By connecting one reference pin to VS and the other to the GND pin, Figure 8-6 shows that the output is set at half of the supply voltage when there is no differential input. This method creates a ratiometric offset to the supply voltage, where the output voltage remains at VS / 2 for 0 V applied to the inputs. VS VS IN– – OUT Output + IN+ REF1 REF2 GND Figure 8-6. Mid-Supply Voltage Output 8.4.3.3 Output Set to Mid-External Reference In this case, Figure 8-7 shows how an external reference can divided by two by connecting one REF pin to ground and the other REF pin to the reference. VS VS IN– – OUT + IN+ REF1 REF2 REF5025 2.5-V Reference GND Figure 8-7. Mid-External Reference Output Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 19 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 8.4.3.4 Output Set Using Resistor Divider The INA241x reference pins allow for the mid-point of the output voltage to be adjusted for system circuitry connections to analog to digital converters (ADCs) or other amplifiers. The reference pins are designed to be connected directly to supply, ground, or a low-impedance reference voltage. The reference pins can be connected together and biased using a resistor divider to achieve a custom output voltage. If the amplifier is used in this configuration, as shown in Figure 8-8, use the output as a differential signal with respect to the resistor divider voltage. Use of the amplifier output as a single-ended signal in this configuration is not recommended because the internal impedance shifts can adversely affect device performance specifications. If single-ended measurement is required, TI recommends to use an external op amp to buffer the resistor divider voltage (see Figure 8-9). VS VS IN± ± R1 OUT TO ADC+ + IN+ TO ADC± REF2 REF1 R2 GND Figure 8-8. Setting the Reference Using a Resistor Divider VS VS IN– – + IN+ R1 OUT TO ADC REF2 REF1 R2 + – GND Op Amp Figure 8-9. Setting the Reference Using a Resistor Divider and an Op Amp buffer 20 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 8.4.4 High Signal Throughput With a bandwidth of 1.1 MHz at a gain of 20 V/V and a slew rate of 8 V/µs, the INA241x is specifically designed for detecting and protecting applications from fast inrush currents. As shown in Table 8-1, the INA241x responds in less than 1 µs for a system measuring a 75 A threshold on a 2 mΩ shunt. Table 8-1. Response Time PARAMETER EQUATION INA241x AT VS = 5 V G Gain 20 V/V IMAX Maximum current 100 A IThreshold Threshold current 75 A RSENSE Current sense resistor value VOUT_MAX Output voltage at maximum current VOUT_MAX = IMAX × RSENSE × G VOUT_THR Output voltage at threshold current VOUT_THR = ITHR × RSENSE × G SR Slew rate Tresponse Output response time 2 mΩ 4V 3V 8 V/µs Tresponse= VOUT_THR / SR < 1 µs Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 21 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 9 Application and Implementation Note Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes, as well as validating and testing their design implementation to confirm system functionality. 9.1 Application Information The INA241x amplifies the voltage developed across a current-sensing resistor as current flows through the resistor to the load. The wide input common-mode voltage range and high common-mode rejection of the INA241x make it usable over a wide range of voltage rails while still maintaining an accurate current measurement. 9.1.1 RSENSE and Device Gain Selection The accuracy of any current-sense amplifier is maximized by choosing the largest current-sense resistor value possible. A larger value sense resistor maximizes the differential input signal for a given amount of current flow and reduces the error contribution of the offset voltage. However, there are practical limits as to how large the current-sense resistor value can be in a given application because of the physical dimensions of the package, package construction, and maximum power dissipation. Equation 2 gives the maximum value for the current-sense resistor for a given power dissipation budget: RSENSE PDMAX IMAX2 (2) where: • • PDMAX is the maximum allowable power dissipation in RSENSE. IMAX is the maximum current that will flow through RSENSE. An additional limitation on the size of the current-sense resistor and device gain is due to the power-supply voltage, VS, and device swing-to-rail limitations. To make sure that the current-sense signal is properly passed to the output, both positive and negative output swing limitations must be examined. Equation 3 provides the maximum values of RSENSE and GAIN to keep the device from exceeding the positive swing limitation. IMAX ª RSENSE ª *$,1 < VSP (3) where: • • • IMAX is the maximum current that will flow through RSENSE. GAIN is the gain of the current-sense amplifier. VSP is the positive output swing of the device as specified in the Specifications. To avoid positive output swing limitations when selecting the value of RSENSE, there is always a trade-off between the value of the sense resistor and the gain of the device under consideration. If the sense resistor selected for the maximum power dissipation is too large, then it is possible to select a lower gain device to avoid positive swing limitations. The negative swing limitation places a limit on how small the sense resistor value can be for a given application. Equation 4 provides the limit on the minimum value of the sense resistor. IMIN ª RSENSE ª *$,1 > VSN (4) where: • 22 IMIN is the minimum current that will flow through RSENSE. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com • • SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 GAIN is the gain of the current-sense amplifier. VSN is the negative output swing of the device as specified in the Specifications. Table 9-1 shows an example of the different results obtained from using five different gain versions of the INA241x. From the table data, the highest gain device allows a smaller current-shunt resistor and decreased power dissipation in the element. Table 9-1. RSENSE Selection and Power Dissipation(1) RESULTS AT VS = 5 V PARAMETER EQUATION A1, B1 DEVICES G Gain 10 V/V VSENSE Ideal differential input voltage VSENSE = VOUT / G 500 mV RSENSE Current sense resistor value RSENSE = VSENSE / IMAX 50 mΩ PSENSE Current-sense resistor power dissipation RSENSE × IMAX2 5W (1) A2, B2 DEVICES A3, B3 DEVICES A4, B4 DEVICES A5, B5 DEVICES 20 V/V 50 V/V 100 V/V 200 V/V 250 mV 100 mV 50 mV 25 mV 25 mΩ 10 mΩ 5 mΩ 2.5 mΩ 2.5 W 1W 0.5 W 0.25 W Design example with 10 A full-scale current with maximum output voltage set to 5 V. 9.2 Typical Application The INA241x is a bidirectional, current-sense amplifier capable of measuring currents through a resistive shunt with common-mode voltages from –5 V to +110 V. 9.2.1 Inline Motor Current-Sense Application 48 V 5V 100 m
VS IN– + OUT IN+ REF1 REF2 GND Figure 9-1. Inline Motor Application Circuit 9.2.1.1 Design Requirements Inline current sensing has many advantages in motor control, from torque ripple reduction to real-time motor health monitoring. However, the full-scale PWM voltage requirements for inline current measurements provide challenges to accurately measure the current. Switching frequencies in the 50 kHz to 100 kHz range create higher ΔV/Δt signal transitions that must be addressed to obtain accurate inline current measurements. With a superior common-mode rejection capability, high precision, and a high common-mode specification, the INA241x provides performance for a wide range of common-mode voltages. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 23 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 9.2.1.2 Detailed Design Procedure For this application, the INA241x measures current in the drive circuitry of a 48 V, 4000 RPM motor. To demonstrate the performance of the device, the INA241A2 with a gain of 20 V/V was selected for this design and powered from a 5 V supply. Using the information in the Section 8.4.3.2 section, the reference point is set to mid-scale by splitting the supply with REF1 connected to supply and REF2 connected to ground. This configuration allows for bipolar current measurements. Alternatively, the reference pins can be tied together and driven with an external precision reference. The current-sensing resistor is sized so that the output of the INA241x is not saturated. A value of 100 mΩ was selected to maintain the analog input within the device limits. 9.2.1.3 Application Curve 3.25 Motor Inline PWM Input Signal VOUT Common-Mode Voltage (V) 100 3 90 2.75 80 2.5 70 2.25 60 2 50 1.75 40 1.5 30 1.25 20 1 10 0.75 0 VOUT (V) 110 0.5 -10 0.25 Time (20s/div) Figure 9-2. INA241A2 Inline Motor Current-Sense Input and Output Signals 24 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 9.3 Power Supply Recommendations The INA241x makes accurate measurements beyond the connected power-supply voltage (VS) because the inputs (IN+ and IN–) can operate anywhere between –5 V and +110 V independent of VS. For example, with the VS power supply equal to 5 V, the common-mode voltage of the measured shunt can be as high as +110 V. 9.3.1 Power Supply Decoupling Place the power-supply bypass capacitor as close to the supply and ground pins as possible. TI recommends a bypass capacitor value of 0.1 μF. Additional decoupling capacitance can be added to compensate for noisy or high-impedance power supplies. 9.4 Layout 9.4.1 Layout Guidelines Attention to good layout practices is always recommended. • • Connect the input pins to the sensing resistor using a Kelvin or 4-wire connection. This connection technique makes sure that only the current-sensing resistor impedance is detected between the input pins. Poor routing of the current-sensing resistor commonly results in additional resistance present between the input pins. Given the very low ohmic value of the current sense resistor, any additional high-current carrying impedance can cause significant measurement errors. Place the power-supply bypass capacitor as close to the device power supply and ground pins as possible. The recommended value of this bypass capacitor is 0.1 µF. Additional decoupling capacitance can be added to compensate for noisy or high-impedance power supplies. 9.4.2 Layout Example RSHUNT IN- 1 8 IN+ GND 2 7 REF1 VIA to Ground Plane REF2 3 6 VS VIA to Power Supply NC 4 5 OUT CBYPASS VIA to Ground Plane VIA to Ground Plane INA Device Figure 9-3. INA241x SOT-23 (DDF) and VSSOP (DGK) Package Recommended Layout Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B 25 INA241A, INA241B www.ti.com SBOSA30A – MARCH 2022 – REVISED AUGUST 2022 10 Device and Documentation Support 10.1 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 10.2 Support Resources TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight from the experts. Search existing answers or ask your own question to get the quick design help you need. Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. 10.3 Trademarks TI E2E™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 10.4 Electrostatic Discharge Caution 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. 10.5 Glossary TI Glossary This glossary lists and explains terms, acronyms, and definitions. 11 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 26 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: INA241A INA241B PACKAGE OPTION ADDENDUM www.ti.com 8-Dec-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) INA241A1IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PH3 Samples INA241A2IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PI3 Samples INA241A3IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PJ3 Samples INA241A4IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PK3 Samples INA241A5IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PL3 Samples INA241B1IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PM3 Samples INA241B2IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PN3 Samples INA241B3IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PO3 Samples INA241B4IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PP3 Samples INA241B5IDDFR ACTIVE SOT-23-THIN DDF 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 2PQ3 Samples PINA241B1IDDFR ACTIVE SOT-23-THIN DDF 8 3000 TBD Call TI Call TI -40 to 125 Samples PINA241B2IDDFR ACTIVE SOT-23-THIN DDF 8 3000 TBD Call TI Call TI -40 to 125 Samples PINA241B3IDDFR ACTIVE SOT-23-THIN DDF 8 3000 TBD Call TI Call TI -40 to 125 Samples (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) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of