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INA253A2QPWRQ1

INA253A2QPWRQ1

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    TSSOP20

  • 描述:

    IC CURR SENSE 1 CIRCUIT 20TSSOP

  • 数据手册
  • 价格&库存
INA253A2QPWRQ1 数据手册
INA253-Q1 INA253-Q1 SBOS950A – JULY 2019 – REVISED JANUARY 2021 SBOS950A – JULY 2019 – REVISED JANUARY 2021 www.ti.com INA253-Q1 AEC-Q100, 80-V, Bidirectional, Precision Current Sense Amplifier With PWM Rejection and Integrated Shunt Resistor 1 Features 3 Description • The INA253-Q1 is an automotive, voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253-Q1 monitors bidirectional currents over a wide common-mode range from –4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A, 200 mV/A, and 400 mV/A. The integration of the precision resistor with a zero-drift chopped amplifier provides calibration-equivalent measurement accuracy, ultra-low temperature-drift performance of 15 ppm/ °C, and an optimized Kelvin layout for the sensing resistor. • • • • • • • • • AEC-Q100 qualified for automotive applications: – Temperature grade 1: –40 °C to +125 °C, TA Functional Safety-Capable – Documentation available to aid functional safety system design Precision integrated shunt resistor – Shunt resistor: 2 mΩ – Shunt inductance: 3 nH – Shunt resistor tolerance: 0.1% (maximum) – ±15 A continuous from –40 °C to +85 °C – 0 °C to 125 °C temperature coefficient: 10 ppm/°C High bandwidth: 350 kHz Enhanced PWM rejection Excellent CMRR – > 120-dB DC CMRR – 90-dB AC CMRR at 50 kHz Accuracy: – Gain: • Gain error: 0.4% (maximum) • Gain drift: 45 ppm/°C (maximum) – Offset: • Offset current: ±15 mA (maximum) • Offset drift: 125 µA/°C (maximum) Wide common-mode range: –4 V to +80 V Available gains: 100 mV/A, 200 mV/A, and 400 mV/A Quiescent current: 2.4 mA (maximum) The INA253-Q1 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that enable real-time continuous current measurements. The measurements are critical for in-line current measurements in a motor-drive application, and for solenoid valve-control applications. This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 3 mA of supply current. All gain versions are specified over the operating temperature range of –40 °C to +125 °C, and are available in a 20-pin TSSOP package. Device Information (1) PART NUMBER INA253-Q1 (1) PACKAGE TSSOP (20) 6.50 mm × 4.40 mm For all available packages, see the package option addendum at the end of the data sheet. Up To 80 V 2 Applications • • • • • • BODY SIZE (NOM) Diesel engine Gasoline engine Valve or motor actuator Automatic transmission Manual transmission Powertrain current sensor 2.7-V to 5.5-V Supply VS IN+ IN± + REF2 INA253-Q1 OUT ± GND REF1 Typical Application An©IMPORTANT NOTICEIncorporated at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, Copyright 2021 Texas Instruments Submit Document Feedback intellectual property matters and other important disclaimers. PRODUCTION DATA. Product Folder Links: INA253-Q1 1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 Table of Contents 1 Features............................................................................1 2 Applications..................................................................... 1 3 Description.......................................................................1 4 Revision History.............................................................. 2 5 Pin Configuration and Functions...................................3 6 Specifications.................................................................. 4 6.1 Absolute Maximum Ratings........................................ 4 6.2 ESD Ratings............................................................... 4 6.3 Recommended Operating Conditions.........................4 6.4 Thermal Information....................................................4 6.5 Electrical Characteristics.............................................5 6.6 Typical Characteristics................................................ 7 7 Detailed Description......................................................12 7.1 Overview................................................................... 12 7.2 Functional Block Diagram......................................... 12 7.3 Feature Description...................................................12 7.4 Device Functional Modes..........................................16 8 Application and Implementation.................................. 19 8.1 Application Information............................................. 19 8.2 Typical Applications.................................................. 21 9 Power Supply Recommendations................................25 10 Layout...........................................................................26 10.1 Layout Guidelines................................................... 26 10.2 Layout Example...................................................... 26 11 Device and Documentation Support..........................27 11.1 Device Support........................................................27 11.2 Related Documentation...........................................27 11.3 Receiving Notification of Documentation Updates.. 27 11.4 Support Resources................................................. 27 11.5 Trademarks............................................................. 27 11.6 Electrostatic Discharge Caution.............................. 27 11.7 Glossary.................................................................. 27 12 Mechanical, Packaging, and Orderable Information.................................................................... 27 4 Revision History Changes from Revision * (July 2019) to Revision A (January 2021) Page • Updated the numbering format for tables, figures, and cross-references throughout the document..................1 • Added Functional Safety-Capable bullets...........................................................................................................1 2 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 Device Comparison Table PRODUCT GAIN (mV/A) INA253A1-Q1 100 INA253A2-Q1 200 INA253A3-Q1 400 5 Pin Configuration and Functions IS± 1 20 IS+ IS± 2 19 IS+ IS± 3 18 IS+ SH± 4 17 SH+ IN± 5 16 IN+ GND 6 15 NC DNC1 7 14 DNC2 NC 8 13 OUT VS 9 12 NC 10 11 REF1 REF2 Not to scale Figure 5-1. PW Package 20-Pin TSSOP Top View Table 5-1. Pin Functions PIN NO. NAME I/O DESCRIPTION 1 IS– Analog input Connect to load 2 IS– Analog input Connect to load 3 IS– Analog input Connect to load 4 SH– Analog output 5 IN– Analog input 6 GND — Ground 7 DNC1 — Do not connect this pin to any potential; leave this pin floating. 8 NC — No connect 9 VS Analog 10 REF2 Analog input Reference voltage 2, 0 V to VS 11 REF1 Analog input Reference voltage 1, 0 V to VS 12 NC — 13 OUT Analog 14 DNC2 — 15 NC Analog Kelvin connection to internal shunt. Connect to IN– if no filtering is needed Voltage input from load side of shunt resistor Power supply, 2.7 V to 5.5 V No connect Output voltage Do not connect this pin to any potential; leave this pin floating. Reserved; connect this pin to ground 16 IN+ Analog input 17 SH+ Analog output Voltage input from supply side of shunt resistor 18 IS+ Analog input Connect to supply 19 IS+ Analog input Connect to supply 20 IS+ Analog input Connect to supply Kelvin connection to internal shunt. Connect to IN+ if no filtering is needed Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 3 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)(1) MIN MAX Supply voltage Shunt input current (ISENSE) Common-mode Differential (VIN+) – (VIN–) Analog inputs (VIN+,VIN–) Common-mode Analog inputs (REF1, REF2, NC) Analog outputs (SH+, SH–) Common-mode Analog output (OUT) Operating, TA Temperature V A GND – 6 90 V –80 80 GND – 6 90 GND – 0.3 VS + 0.3 GND – 6 90 V GND – 0.3 VS + 0.3 V –55 150 Junction, TJ V V °C 150 Storage, Tstg (1) 6 ±15 Continuous Analog inputs (IS+, IS–) UNIT –65 150 Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 6.2 ESD Ratings VALUE V(ESD) (1) Human body model (HBM), per AEC HBM ESD Classification Level 2 Electrostatic discharge Q100-002(1) UNIT ±3000 V Charged device model (CDM), per AEC Q100-011 CDM ESD Classification Level C6 ±1000 AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN NOM MAX UNIT VCM Common-mode input voltage –4 80 V VS Operating supply voltage 2.7 5.5 V TA Operating free-air temperature –40 125 ℃ 6.4 Thermal Information INA253-Q1 THERMAL METRIC(1) PW (TSSOP) UNIT 20 PINS RθJA Junction-to-ambient thermal resistance 110.6 °C/W RθJC(top) Junction-to-case (top) thermal resistance 54.1 °C/W RθJB Junction-to-board thermal resistance 87.5 °C/W ψJT Junction-to-top characterization parameter 114.1 °C/W ψJB Junction-to-board characterization parameter 87.5 °C/W (1) 4 For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 6.5 Electrical Characteristics at TA = 25 °C, VS = 5 V, ISENSE = IS+ = 0 A, VCM = 12 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUT VIN+ = –4 V to +80 V, ISENSE = 0 A, TA = –40 °C to +125 °C VCM Common-mode input range CMR Common-mode rejection VIN+ = –4 V to +80 V, ISENSE = 0 A, TA = –40 °C to +125 °C f = 50 kHz ±13 IOS Offset current, input-referred ISENSE = 0 A ±2.5 ±15 mA dIOS/dT Offset current drift ISENSE = 0 A, TA = –40 °C to +125 °C 25 125 µA/°C PSRR Power-supply rejection ratio VS = 2.7 V to 5.5 V, ISENSE = 0 A ±0.5 ±5 mA/V Input bias current IB+, IB–, ISENSE = 0 A IB Reference input range –4 80 ±125 ±500 µA/V mA/V 90 0 V µA VS V SHUNT RESISTOR RSHUNT Shunt resistance (SH+ to SH–) Equivalent resistance when used with onboard amplifier Used as stand-alone resistor(1) 2 2.002 1.9 2 2.1 mΩ Package resistance IS+ to IS– 4.5 mΩ Package inductance IS+ to IS– 3 nH TA = –40 °C to +125 °C Resistor temperature coefficient ISENSE 1.998 15 TA = –40 °C to 0 °C 50 TA = 0 °C to 125 °C 10 Maximum continuous current(2) TA = –40 °C to +85 °C Shunt short time overload ISENSE = 30 A for 5 seconds Shunt thermal shock –65 °C to +150°C, 500 cycles Shunt resistance to solder heat 260 °C solder, 10 seconds Shunt high temperature exposure 1000 hours, TA = 150 °C Shunt cold temperature storage 24 hours, TA = –65 °C ppm/°C ±15 A ±0.05% ±0.1% ±0.1% ±0.15% ±0.025% OUTPUT INA253A1 G Gain 100 INA253A2 200 INA253A3 400 System gain error(3) GND + 50 mV ≤ VOUT ≤ VS – 200 mV, TA = 25 °C Nonlinearity error GND + 10 mV ≤ VOUT ≤ VS – 200 mV Reference divider accuracy VOUT = |(VREF1 – VREF2)| / 2 at ISENSE = 0 A, TA = –40 °C to +125 °C ±0.05% TA = –40 °C to +125 °C RVRR mV/A ±0.4% ±45 ppm/°C ±0.01% 0.02% Reference voltage rejection ratio (inputreferred) INA253A2 INA253A1, INA253A3 1 Maximum capacitive load No sustained oscillation 1 0.1% 2.5 mA/V nF VOLTAGE OUTPUT Swing to VS power-supply rail RL = 10 kΩ to GND, TA = –40 °C to +125 °C VS – 0.05 VS – 0.2 Swing to GND RL = 10 kΩ to GND, ISENSE = 0 A, VREF1 = VREF2 = 0 V, TA = –40 °C to +125 °C VGND + 1 VGND + 10 V mV Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 5 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 at TA = 25 °C, VS = 5 V, ISENSE = IS+ = 0 A, VCM = 12 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT FREQUENCY RESPONSE BW Bandwidth(4) Output settling time SR All gains, –3-dB bandwidth 350 All gains, 2% THD+N(4) 100 Settles to 0.5% of final value Slew rate kHz 10 µs 2.4 V/µs 40 nV/√ Hz NOISE (Input Referred) Voltage noise density POWER SUPPLY IQ (1) (2) (3) (4) 6 Quiescent current ISENSE = 0 A TA = –40 °C to +125 °C 1.8 2.4 2.6 mA The internal shunt resistor is intended to be used with the internal amplifier and is not intended to be used as a stand-alone resistor. See the Integrated Shunt Resistor section for more information. See Maximum Continuous Current for additional information on the current derating and review layout section recommendations to improve the current handling capability of the device at higher temperatures. System gain error includes amplifier gain error and the integrated sense resistor tolerance. System gain error does not include the stress related characteristics of the integrated sense resistor. These characteristics are described in the Shunt Resistor section of the Electrical Characteristics table. See Bandwidth section for more details. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 6.6 Typical Characteristics at TA = 25 °C, VS = 5 V, VIN+ = 12 V, and VREF = VS / 2 (unless otherwise noted) 15 12 Population Offset Current (mA) 9 6 3 0 -3 -6 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 -12 Input Offset Current (mA) D001 -15 -50 All gains -25 0 25 50 75 Temperature (qC) 100 125 150 D002 Figure 6-2. Input Offset Current vs Temperature Figure 6-1. Input Offset Voltage Production Distribution 250 0 -250 -325 -300 -275 -250 -225 -200 -175 -150 -125 -100 -75 -50 -25 0 25 50 75 100 125 Population Common-Mode Rejection (PA/V) 500 Common-Mode Rejection Ratio (PA/V) D003 -500 -50 All gains Figure 6-3. Common-Mode Rejection Production Distribution -25 0 25 50 75 Temperature (qC) 100 125 150 D004 Figure 6-4. Common-Mode Rejection Ratio vs Temperature 2.5 Population 0 D005 Figure 6-5. Power-Supply Rejection Ratio vs Temperature 0.10 0.08 0.06 0.04 0 0.02 -0.02 -0.04 -0.06 -0.08 150 -0.10 125 -0.12 100 -0.14 25 50 75 Temperature (qC) -0.16 0 -0.18 -25 -0.20 -5 -50 -0.22 -2.5 -0.24 Power-Supply Rejection (mA/V) 5 D006 System Gain Error (%) Figure 6-6. Gain Error Production Distribution (INA253A1-Q1) Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 7 INA253-Q1 www.ti.com 0.10 0.08 0.06 0.04 0 0.02 -0.02 -0.04 -0.06 -0.08 -0.10 -0.12 -0.14 -0.16 -0.18 -0.20 -0.24 -0.22 Population 0.10 0.08 0.06 0.04 0 0.02 -0.02 -0.04 -0.06 -0.08 -0.10 -0.12 -0.14 -0.16 -0.18 -0.20 -0.22 D007 D008 System Gain Error (%) System Gain Error (%) Figure 6-7. Gain Error Production Distribution (INA253A2-Q1) Figure 6-8. Gain Error Production Distribution (INA253A3-Q1) 0.45 0.10 0.30 0.08 Amplifier Gain Error (%) System Gain Error (%) -0.24 Population SBOS950A – JULY 2019 – REVISED JANUARY 2021 0.15 0.00 -0.15 -0.30 -0.45 0.05 0.02 0.00 -0.02 -0.05 INA253A1 INA253A2 INA253A3 -0.60 -0.75 -50 -25 0 25 50 75 Temperature (qC) 100 125 INA253A1 INA253A2 INA253A3 -0.08 -0.10 -50 150 -25 0 D009 Figure 6-9. System Gain Error vs Temperature 25 50 75 Temperature (qC) 100 125 150 D010 Figure 6-10. Amplifier Gain Error vs Temperature 140 60 50 120 30 PSRR (dB) Gain (dB) 40 20 10 0 -10 10 INA253A1 INA253A2 INA253A3 100 80 60 1k 10k 100k Frequency (Hz) 1M 10M D011 VCM = 0 V, VDIFF = 10-mVPP sine Figure 6-11. Amplifier Gain Error vs Frequency 8 100 40 10 100 1k 10k Frequency (Hz) 100k 1M D012 Figure 6-12. Power-Supply Rejection Ratio vs Frequency Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 150 VS Output Voltage Swing (V) 135 CMRR (dB) 120 105 GND + 3 GND + 2 GND + 1 75 GND 0 60 10 100 1k 10k Frequency (Hz) 100k 1 5 6 7 D014 Figure 6-14. Output Voltage Swing vs Output Current 200 160 Input Bias Current (PA) 200 160 120 80 40 120 80 40 0 0 0 10 20 30 40 50 60 Common-Mode Voltage (V) 70 80 -40 -10 90 0 10 20 30 40 50 60 Common-Mode Voltage (V) D015 VS = 5 V 2.4 90 2.2 Quiescent Current (mA) 2.6 95 85 80 75 70 65 D016 1.8 1.6 1.4 1.2 1.0 55 0.8 25 50 75 Temperature (qC) 90 2.0 60 0 80 Figure 6-16. Input Bias Current vs Common-Mode Voltage 100 -25 70 VS = 0 V Figure 6-15. Input Bias Current vs Common-Mode Voltage Input Bias Current (PA) 3 4 Output Current (mA) D013 240 50 -50 2 VS = 5 V 1M Figure 6-13. Common-Mode Rejection Ratio vs Frequency Input Bias Current (PA) VS - 2 90 -40 -10 25qC 125qC -40qC VS - 1 100 125 150 0.6 -50 VS = 5V VS = 5.5V VS = 2.7V -25 D017 Figure 6-17. Input Bias Current vs Temperature 0 25 50 75 Temperature (qC) 100 125 150 D018 Figure 6-18. Quiescent Current vs Temperature Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 9 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 1.95 100 1.85 Refered-to-Input Current Noise (PA/—Hz) Quiescent Current (mA) 1.90 1.80 1.75 1.70 1.65 1.60 -10 0 10 20 30 40 50 60 Common-Mode Voltage (V) 70 80 90 100 D019 Figure 6-19. Quiescent Current vs Common-mode Voltage 1k 10k Frequency (Hz) 100k 1M D020 Figure 6-20. INA253A1-Q1 Input-Referred Voltage Noise vs Frequency Refered-to-Input Current Noise (PA/—Hz) 100 Refered-to-Input Current Noise (PA/—Hz) 100 10 10 10 10 100 1k 10k Frequency (Hz) 100k 1M 10 10 100 D021 Figure 6-21. INA253A2-Q1 Input-Referred Voltage Noise vs Frequency 1k 10k Frequency (Hz) 100k 1M D022 Figure 6-22. INA253A3-Q1 Input-Referred Voltage Noise vs Frequency Output Voltage (1 V/div) Referred-to-Input Current Noise (100 PA/div) Input Voltage (10 mV/div) Input Output 0 Time (10 Ps/div) D024 Time (1 s/div) VREF1 = VREF2 = 0 V, 10-mVPP input step D023 Figure 6-23. 0.1-Hz to 10-Hz Voltage Noise (Referred-to-Input) 10 Figure 6-24. Amplifier Step Response Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 3.5 Common-Mode Input (V) 2.0 120 Voltage (2 V/div) 2.5 Supply Output Output (V) 3.0 Common-Mode Input Voltage 1.5 Output Voltage 90 60 30 0 0 -30 Time (0.5 Ps/div) D025 Time (2 Ps/div) VREF1 = VREF2 = 0 V D026 Figure 6-25. Common-Mode Transient Response 3.5 3.0 3.0 Common-Mode Input (V) 2.0 120 Common-Mode Input Voltage 1.5 Output Voltage 90 60 30 0 -30 2.5 2.0 Common-Mode Input (V) 2.5 Output (V) 3.5 120 Output (V) Figure 6-26. Start-Up Response Common-Mode Input Voltage 1.5 Output Voltage 90 60 30 0 -30 Time (0.25 Ps/div) Time (0.25 Ps/div) D027 D028 Rising Edge Falling Edge Figure 6-27. Common-Mode Voltage Transient Response Figure 6-28. Common-Mode Voltage Transient Response Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 11 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 7 Detailed Description 7.1 Overview The INA253-Q1 features a precision, 2-mΩ current-sensing resistor and supports common mode voltages up to 80 V. The internal amplifier features a precision zero-drift topology with excellent common-mode rejection ratio (CMRR). The internal amplifier also features an enhanced pulse-width modulation (PWM) rejection currentsensing amplifier integrated into a single package. High-precision measurements are enabled by matching the shunt resistor value and the current-sensing amplifier gain, thus providing a highly-accurate, system-calibrated method for measuring current. Enhanced PWM rejection reduces the effect of common-mode transients on the output signal that are associated with PWM 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. 7.2 Functional Block Diagram IS± VS SH± IN± ± PWM Rejection 2m 0.1% OUT + 50 k REF2 50 k REF1 IS+ SH+ IN+ GND 7.3 Feature Description 7.3.1 Integrated Shunt Resistor The INA253-Q1 features a precise, low-drift, current-sensing resistor that provides accurate measurements over the entire specified temperature range of –40 °C to +125 °C. The integrated current-sensing resistor provides measurement stability over temperature, and simplifies printed circuit board (PCB) layout and board constraint difficulties common in high-precision measurements. The onboard current-sensing resistor is designed as a 4-wire (or Kelvin) connected resistor that enables accurate measurements through a force-sense connection. Connecting the amplifier inputs pins (VIN– and VIN +) to the sense pins of the shunt resistor (SH– and SH+) eliminates many of the parasitic impedances commonly found in typical very-low sensing-resistor level measurements. Although the sense connection of the currentsensing resistor can be accessed through the SH+ and SH– pins, this resistor is not intended to be used as a stand-alone component. The INA253-Q1 is system-calibrated to makes sure that the current-sensing resistor and current-sensing amplifier are both precisely matched to one another. Use of the shunt resistor without the onboard amplifier results in a current-sensing resistor tolerance of approximately 5%. To achieve the optimized system gain specification, the onboard sensing resistor must be used with the internal current-sensing amplifier. The INA253-Q1 has approximately 4.5 mΩ of package resistance. Of this total package resistance, 2 mΩ is a precisely-controlled resistance from the Kelvin-connected current-sensing resistor used by the amplifier. The power dissipation requirements of the system and package are based on the total 4.5-mΩ package resistance between the IS+ and IS– pins. The heat dissipated across the package when current flows through the device ultimately determines the maximum current that can be safely handled by the package. The current consumption of the silicon is relatively low, leaving the total package resistance to carry the high load current as the primary contributor to the total power dissipation of the package. The maximum safe-operating current level is set to make sure that the heat dissipated across the package is limited so that no damage occurs to the resistor or the package, or that the internal junction temperature of the silicon does not exceed a 150 °C limit. External factors, such as ambient temperature, external air flow, and PCB layout, contribute to how effectively the device dissipates heat. The internal heat is developed as a result of the current flowing through the total package resistance of 4.5 mΩ. Under the conditions of no air flow, a maximum ambient temperature of 85 °C, 12 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 and 1-oz. copper input power planes, the INA253-Q1 accommodates continuous current levels up to 15 A. Figure 7-1 shows that the current-handling capability is derated at temperatures greater than the 85 °C level, with safe operation up to 10 A at a 125 °C ambient temperature. With air flow and larger 2-oz. copper input power planes, the INA253-Q1 safely accommodates continuous current levels up to 15 A across the entire –40 °C to +125 °C temperature range. 20 Maximum Continuous Current (A) 17.5 15 12.5 10 7.5 5 ±50 ±25 0 25 50 75 100 Temperature (ƒC) 125 150 C026 Figure 7-1. Maximum Continuous Current vs Temperature 7.3.2 Short-Circuit Duration The INA253-Q1 features a physical shunt resistance that is able to withstand current levels higher than the continuous handling limit of 15 A without sustaining damage to the current-sensing resistor or the currentsensing amplifier, if the excursions are brief. Figure 7-2 shows the short-circuit duration curve for the INA253Q1. 100 Current (A) 80 60 40 20 0 0.1 1 10 Time (s) 100 C027 Figure 7-2. Short-Circuit Duration Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 13 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 7.3.3 Temperature Stability System calibration is common for many industrial applications in order to eliminate initial component and systemlevel errors that can be present. A system-level calibration reduces the initial accuracy requirement for many of the individual components because the errors associated with these components are effectively eliminated through the calibration procedure. This calibration enables precise measurements at the temperature in which the system is calibrated. As the system temperature changes because of external ambient changes or self heating, measurement errors are reintroduced. Without accurate temperature compensation used in addition to the initial adjustment, the calibration procedure is not effective. The user must account for temperature-induced changes. One of the primary benefits of the low temperature coefficient of the INA253-Q1 (including both the integrated current-sensing resistor and current-sensing amplifier) is that the device measurement remains accurate, even when the temperature changes throughout the specified temperature range of the device. Figure 7-3 shows the drift performance for the integrated current-sensing resistor. Use Figure 7-3 to determine the typical variance in the shunt resistor value at various temperatures. As with any resistive element, the tolerance of the component varies when exposed to different temperature conditions. For the current-sensing resistor integrated in the INA253-Q1, the resistor does vary slightly more when operated in temperatures ranging from –40 °C to 0 °C than when operated from 0 °C to 125 °C. Even in the –40 °C to 0 °C temperature range, the drift is still low at 25 ppm/°C. Shunt Resistance (m ) 2.005 2 1.995 1.99 ±50 ±25 0 25 50 75 100 Temperature (ƒC) 125 150 C030 Figure 7-3. Sensing Resistor vs Temperature An additional aspect to consider is that when current flows through the current-sensing resistor, power is dissipated across this component. This dissipated power results in an increase in the internal temperature of the package, including the integrated sensing resistor. This resistor self-heating effect results in an increase of the resistor temperature helping to move the component out of the colder, wider drift temperature region. 7.3.4 Enhanced PWM Rejection Operation The enhanced PWM rejection feature of the INA253-Q1 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. Traditionally, large ΔV/Δt commonmode transitions are handled strictly by increasing the amplifier signal bandwidth, which can increase chip size, complexity and ultimately cost. The INA253-Q1 is designed with high common-mode rejection techniques to reduce large ΔV/Δt transients before the system is disturbed as a result of these large signals. The high ac CMRR, in conjunction with signal bandwidth, allows the INA253-Q1 to provide minimal output transients and ringing compared with standard circuit approaches. 14 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 7.3.5 Input Signal Bandwidth The INA253-Q1 input signal, which represents the current being measured, is accurately measured with minimal disturbance from large ΔV/Δt common-mode transients as previously described. For PWM signals typically associated with motors, solenoids, and other switching applications, the current being monitored varies at a significantly slower rate than the faster PWM frequency. The INA253-Q1 bandwidth is defined by the –3-dB bandwidth of the current-sense amplifier inside the device; see Section 6.5 for more information. The device bandwidth provides fast throughput and fast response required for the rapid detection and processing of overcurrent events. Without the higher bandwidth, protection circuitry may not have adequate response time, and damage may occur to the monitored application or circuit. Figure 7-4 shows the performance profile of the device over frequency. Harmonic distortion increases at the upper end of the amplifier bandwidth with no adverse change in detection of overcurrent events. However, increased distortion at the highest frequencies must be considered when the measured current bandwidth begins to approach the INA253-Q1 bandwidth. 10% THD+N 1% 0.1% 90% FS Input 0.01% 1 10 100 1k 10k Frequency (Hz) 100k 1M D006 Figure 7-4. Amplifier Performance Over Frequency For applications requiring distortion sensitive signals, Figure 7-4 provides information to show that there is an optimal frequency performance range for the amplifier. The full amplifier bandwidth is always available for fast overcurrent events at the same time that the lower-frequency signals are amplified at a low distortion level. The output signal accuracy is reduced for frequencies closer to the maximum bandwidth. Individual requirements determine the acceptable limits of distortion for high-frequency, current-sensing applications. Testing and evaluation in the end application or circuit are required to determine the acceptance criteria, and to validate the performance levels meet the system specifications. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 15 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 7.4 Device Functional Modes 7.4.1 Adjusting the Output Midpoint With the Reference Pins Figure 7-5 shows a test circuit for reference-divider accuracy. The INA253-Q1 output is configurable to allow for unidirectional or bidirectional operation. CAUTION Do not connect the REF1 pin or the REF2 pin to any voltage source lower than GND or higher than VS. 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. IS± SH± IN± VS PWM Rejection 2m 0.1% ± OUT + 50 k REF2 50 k REF1 IS+ GND SH+ IN+ Figure 7-5. Adjusting the Output Midpoint 7.4.2 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 Section 7.4.3). The required differential input polarity depends on the output voltage setting. The amplifier output moves away from the referenced rail proportional to the current passing through the internal shunt resistor. 7.4.3 Ground Referenced Output When using the INA253-Q1 in unidirectional mode with a ground-referenced output, both reference inputs are connected to ground. Figure 7-6 shows how this configuration takes the output to ground when there is 0-A flowing across the internal shunt. IS± SH± IN± VS PWM Rejection 2m 0.1% ± OUT + 50 k REF2 50 k REF1 IS+ SH+ IN+ GND Figure 7-6. Ground-Referenced Output 16 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 7.4.4 Reference Pin Connections for Bidirectional Current Measurements Bidirectional operation allows the INA253-Q1 to measure currents through a resistive shunt in two directions. For this case, set the output voltage anywhere within the reference input limits. A common configuration is to set the reference inputs at half-scale for equal range in both directions. However, the reference inputs can be set to a voltage other than half-scale when the bidirectional current is nonsymmetrical. 7.4.4.1 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 7-7 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. IS± SH± IN± VS PWM Rejection 2m 0.1% ± OUT + 50 k REF2 REF5025 2.5-V Reference 50 k REF1 IS+ GND SH+ IN+ Figure 7-7. External Reference Output 7.4.5 Output Set to Mid-Supply Voltage Figure 7-8 shows that by connecting one reference pin to VS and the other to the GND pin, the output is set at half of the supply when there is no differential input. This method creates a ratiometric offset to the supply voltage, where the output voltage remains at VS / 2 when 0 V is applied between the IN+ and IN– inputs. IS± SH± IN± VS PWM Rejection 2m 0.1% ± OUT + 50 k REF2 50 k REF1 IS+ SH+ IN+ GND Figure 7-8. Mid-Supply Voltage Output Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 17 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 7.4.6 Output Set to Mid-External Reference In this example, an external reference is divided by two by connecting one REF pin to ground and the other REF pin to the reference, as shown in Figure 7-9. IS± SH± IN± VS ± PWM Rejection 2m 0.1% OUT + 50 k REF2 50 k REF5025 2.5-V Reference REF1 IS+ GND SH+ IN+ Figure 7-9. Mid-External Reference Output 7.4.7 Output Set Using Resistor Divide The INA253-Q1 REF1 and REF2 pins allow for the midpoint of the output voltage to be adjusted for system circuitry connections to analog to digital converters (ADCs) or other amplifiers. The REF pins are designed to be connected directly to supply, ground, or a low-impedance reference voltage. The REF 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 7-10, use the output as a differential signal with respect to the resistor divider voltage. For most accurate results, do not use single-ended measurements at the amplifier output because the internal impedance shifts can adversely affect device performance specifications. IS± SH± IN± VS R1 PWM Rejection 2m 0.1% ± + OUT 50 k + ADC REF2 ± 50 k IS+ SH+ IN+ REF1 R2 GND Figure 7-10. Setting the Reference Using a Resistor Divider 18 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 8 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. 8.1 Application Information The INA253-Q1 measures the voltage developed as current flows across the integrated low inductive currentsensing resistor. The device provides reference pins to configure operation as either unidirectional or bidirectional output swing. When using the INA253-Q1 for inline motor current sense or measuring current in an H-bridge, the device is commonly configured for bidirectional operation. 8.1.1 Input Filtering Note Input filters are not required for accurate measurements using the INA253-Q1. For most accurate results, do not use filters at the IN+ and IN– inputs. However, If filter components are used on the input of the amplifier, follow the guidelines in this section to minimize effects on performance. Based strictly on user design requirements, external filtering of the current signal may be desired. The initial location that can be considered for the filter is at the output of the current amplifier. Although placing the filter at the output satisfies the filtering requirements, this location changes the low output impedance measured by any circuitry connected to the output voltage pin. The other location for filter placement is at the current amplifier input pins. This location also satisfies the filtering requirement, but carefully select the components to minimize the impact on device performance. Figure 8-1 shows a filter placed at the inputs pins. IS± SH± VS IN± ± PWM Rejection 2m 0.1% OUT + 50 k REF2 50 k REF1 IS+ SH+ IN+ GND Figure 8-1. Filter at Input Pins External series resistance provides a source of additional measurement error. Therefore, keep the value of these series resistors to 10-Ω or less in order to reduce loss of accuracy. The internal bias network shown in Figure 8-1 creates a mismatch in input bias currents when a differential voltage is applied between the input pins (see Figure 8-2). If additional external series filter resistors are added to the circuit, a mismatch is created in the voltage drop across the filter resistors. This voltage is a differential error voltage in the shunt resistor voltage. In addition to the absolute resistor value, mismatch resulting from resistor tolerance can significantly impact the error because this value is calculated based on the actual measured resistance. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 19 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 250 IB+ Input Bias Current (PA) 200 150 100 IB50 0 -50 -100 0 0.2 0.4 0.6 Differential Input Voltage (V) 0.8 1 Figure 8-2. Input Bias Current vs Differential Input Voltage Calculate the measurement error expected from the additional external filter resistors using Equation 1. Gain Error (%) = 100 - (100 ´ Gain Error Factor) (1) where • Gain Error Factor is calculated using Equation 2. Gain Error Factor 3000 RS 3000 (2) Where: • RS is the external filter resistance value Calculate the gain error factor, shown in Equation 2, in order to determine the gain error introduced by the additional external series resistance. Equation 1 calculates the deviation of the shunt voltage resulting from the attenuation and imbalance created by the added external filter resistance. Table 8-1 provides the gain error factor and gain error for several resistor values. Table 8-1. Gain Error Factor and Gain Error for External Input Resistors 20 EXTERNAL RESISTANCE (Ω) GAIN ERROR FACTOR GAIN ERROR (%) 5 0.998 0.17 10 0.997 0.33 100 0.968 3.23 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 8.2 Typical Applications The INA253-Q1 offers advantages for multiple applications including the following: • High common-mode range and excellent CMRR enables direct inline sensing • Precision low-inductive, low-drift shunt eliminates the need for overtemperature system calibration • Ultra-low offset and drift eliminates the necessity of calibration • Wide supply range enables a direct interface with most microprocessors 8.2.1 High-Side, High-Drive, Solenoid Current-Sense Application Challenges exist in solenoid drive current sensing that are similar to those in motor inline current sensing. In certain topologies, the current-sensing amplifier is exposed to the full-scale PWM voltage between ground and supply. The INA253-Q1 is an excellent choice for this type of application. The 2-mΩ integrated shunt with a total system accuracy of 0.2% with a total system drift of 25 ppm/°C provides system accuracy across temperature eliminating the need for tri temperature system calibration. 12 V 2.7-V to 5.5-V Supply VS REF2 INA253-Q1 IN+ + OUT ± IN± GND REF1 Figure 8-3. Solenoid Drive Application Circuit 8.2.1.1 Design Requirements For this application, the INA253-Q1 measures current in the driver circuit of a 12-V, 500-mA hydraulic valve. Table 8-2. Design Parameters DESIGN PARAMETER EXAMPLE VALUE Common-mode voltage 12 V Maximum sense current 500 mA Power-supply voltage 3.3 V Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 21 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 8.2.1.2 Detailed Design Procedure To demonstrate the performance of the device, the INA253-Q1, with a gain of 400mV/A, is selected for this design and powered from a 5-V supply. Using the information in the Section 7.4.5 section, the reference point is set to midscale by splitting the supply with REF1 connected to ground and REF2 connected to supply. Alternatively, the reference pins can be tied together and driven with an external precision reference. Common-Mode Input Signal INA253A3-Q1 Output Common-Mode Input Signal (V) 1.8 1.7 15 1.6 12 9 INA253A3-Q1 Output (V) 8.2.1.3 Application Curve 6 3 0 –3 Time (50 ms/div) Figure 8-4. Solenoid Drive Current Sense Input and Output Signals 22 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 8.2.2 Speaker Enhancements and Diagnostics Using Current Sense Amplifier CLASS-D audio amplifiers in conjunction with the INA253-Q1 provide accurate speaker load current. Speaker load current is used to determine speaker diagnostics, and can further be expanded to measure key speaker parameters, such as speaker coil resistance and speaker real-time ambient temperature. VDD INA253-Q1 IN± ± + GND IN+ VS 2.7 V to 5.5 V REF2 REF1 OUT Figure 8-5. Current Sensing in a CLASS-D Subsystem 8.2.2.1 Design Requirements Table 8-3. Design Parameters DESIGN PARAMETER EXAMPLE VALUE Common-mode voltage 24 V Power-supply voltage 5V Maximum rms current 5A Frequency sweep 20 Hz to 20 Khz 8.2.2.2 Detailed Design Procedure For this application, the INA253-Q1 measures current flowing through the speaker from the CLASS-D amplifier. The integrated shunt of 2 mΩ with an inductance of only 3 nH is an excellent choice for current sensing in speaker applications where low inductance is required. The low-inductive shunt enables accurate current sensing across frequencies over the audio range of 20 hz to 20 kHz. The INA253-Q1 is setup in a bidirectional with the reference set to mid-supply as shown in Figure 7-9. The power supply to INA253-Q1 is setup at 5 V. The output of INA253-Q1 is set at 2.5 V. The INA253-Q1 with a gain of 100 mV/A, the INA253-Q1 output for a peak to peak of 10-A current the output of the INA253-Q1 will swing from 3.5 V to 1.5 V. The output can be directly connected to ADC input that has a full scale range of 5 V. The INA253-Q1 has a low THD+N of 0.1% at 1 kHz that enables distortion measurement of speaker. The INA253-Q1 can measure the impedance of the speaker and accurately measure the resonance frequency and peak impedance at resonance frequency. The INA253-Q1 can accurately track changes in impedance real time. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 23 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 8.2.2.3 Application Curve A typical example output response of speaker of 4-Ω impedance measurement from 20 Hz to 20 kHz is as shown in Figure 8-6. 28 24 Impedance (Ohms) 20 16 12 4 Re 20 Inductive Rise (Le) Impedance at Resonance 100 500 1000 10000 20000 Frequency (hZ) Figure 8-6. Speaker Impedance Measurement 24 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 9 Power Supply Recommendations The INA253-Q1 makes accurate measurements beyond the connected power-supply voltage (VS) because the inputs (IN+ and IN–) operate anywhere between –4 V and +80 V, independent of VS. For example, the VS power supply equals 5 V and the common-mode voltage of the measured shunt can be as high as 80 V. Although the common-mode voltage of the input can be beyond the supply voltage, the output voltage range of the INA253Q1 is constrained to the supply voltage. Place the power-supply bypass capacitor as close as possible to the supply and ground pins. 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. If the INA253-Q1 output is set to mid-supply, then take extreme care to minimize noise on the power supply. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 25 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 10 Layout 10.1 Layout Guidelines • • • • This device is specified for current handling of up to 10 A over the entire –40 °C to +125 °C temperature range using a 1-oz copper pour for the input power plane, as well as no external airflow passing over the device. The primary current-handling limitation for this device is how much heat is dissipated inside the package. Efforts to improve heat transfer out of the package and into the surrounding environment improve the ability of the device to handle currents of up to 15 A over the entire –40 °C to +125 °C temperature range. Heat transfer improvements primarily involve larger copper power traces and planes with increased copper thickness (2 oz), as well as providing airflow to pass over the device. The INA253-Q1 evaluation module (EVM) features a 2-oz copper pour for the planes, and is capable of supporting 15 A at temperatures up to 125 °C. Place the power-supply bypass capacitor as close as possible to the supply and ground pins. 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. 10.2 Layout Example Signal Plane IS± IS+ IS± IS+ IS± IS+ SH± SH+ IN± IN+ Signal Plane INA253-Q1 Bypass Capacitor Power Supply VIA GND NC DNC1 DNC2 NC OUT VS NC REF2 REF1 GnD VIA GnD VIA Figure 10-1. INA253-Q1 Layout Example 26 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 INA253-Q1 www.ti.com SBOS950A – JULY 2019 – REVISED JANUARY 2021 11 Device and Documentation Support 11.1 Device Support 11.1.1 Development Support INA253 Evaluation Module (EVM) 11.2 Related Documentation For related documentation see the following: Texas Instruments, INA253EVM user's guide 11.3 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. Click on Subscribe to updates 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. 11.4 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. 11.5 Trademarks TI E2E™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 11.6 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. 11.7 Glossary TI Glossary This glossary lists and explains terms, acronyms, and definitions. 12 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. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: INA253-Q1 27 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 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) (4/5) (6) INA253A1QPWRQ1 ACTIVE TSSOP PW 20 2000 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 Q253A1 INA253A2QPWRQ1 ACTIVE TSSOP PW 20 2000 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 Q253A2 INA253A3QPWRQ1 ACTIVE TSSOP PW 20 2000 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 Q253A3 (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
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