My Inquiry
My Account
Texas Instruments INA253A1IPWR
- Part No.:
- INA253A1IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
INA253A1IPWR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,676
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA253A1IPWR from Texas Instruments is a high-voltage, bidirectional, zero-drift current-shunt monitor with an integrated 2-mΩ precision shunt resistor, 100 mV/A fixed gain, ±15-A continuous current capability, –4 V to +80 V common-mode range, and 350-kHz bandwidth-designed for real-time motor-phase current sensing in industrial motor drives.
For engineers reviewing the INA253A1IPWR datasheet, INA253A1IPWR pinout, INA253A1IPWR application, or INA253A1IPWR equivalent, this page delivers verified technical context, validated pin functions, confirmed thermal and accuracy specs, and two rigorously cross-referenced alternative parts for solenoid control, transmission systems, and DC/DC converter current monitoring.
Technical Context
The INA253A1IPWR integrates a Kelvin-connected 2-mΩ shunt (10 ppm/°C TC from 0°C to 125°C) with a zero-drift chopped amplifier, enabling system-calibrated measurement accuracy without external calibration. Its enhanced PWM rejection circuitry suppresses large dv/dt transients at the input stage before amplification.
It operates from a single 2.7-V to 5.5-V supply, draws ≤2.4 mA quiescent current, and delivers output swing within 10 mV of GND and 200 mV of VS across –40°C to +125°C-supporting high-side and low-side bidirectional current sensing in switching power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 mV/A - fixed gain enables direct voltage output proportional to sensed current; eliminates external gain-setting resistors. |
| Common-Mode Range | –4 V to +80 V - supports high-side sensing in 48-V and 60-V industrial bus systems without level-shifting circuitry. |
| Bandwidth | 350 kHz (–3 dB) - captures fast overcurrent events in motor drive PWM cycles up to 100 kHz fundamental frequency. |
| Shunt Resistance | 2.000 mΩ ±0.1% - precision-matched to amplifier for system-level gain error ≤0.4% over temperature. |
| Offset Current | ±15 mA max - input-referred offset ensures <1.5-mV output error at 0-A sense condition with 100-mV/A scaling. |
| Quiescent Current | 2.4 mA max - enables low-power operation in always-on current monitoring subsystems. |
| CMRR | >120 dB DC, 90 dB at 50 kHz - rejects noise from adjacent high-dv/dt power switches in compact PCB layouts. |
Pinout & Package
INA253A1IPWR is housed in a 20-pin TSSOP package (6.50 mm × 4.40 mm), optimized for thermal dissipation and Kelvin shunt routing. The package includes three IS+ pins (18–20) and three IS– pins (1–3) for low-inductance, high-current path connections, plus dedicated SH+ and SH– terminals for precision Kelvin sensing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 (IS–) | High-current shunt return | Parallel low-impedance connection points to load side of internal shunt; minimize voltage drop error under ±15-A operation. |
| 18, 19, 20 (IS+) | High-current shunt supply | Parallel low-impedance connection points to supply side of internal shunt; reduce package resistance contribution to power loss. |
| 4 (SH–), 17 (SH+) | Kelvin sense outputs | Direct Kelvin taps to internal shunt; connect to IN– and IN+ respectively to eliminate trace resistance errors in precision measurement. |
| 5 (IN–), 16 (IN+) | Differential amplifier inputs | Accept Kelvin-sensed voltages; enable accurate current measurement independent of PCB trace IR drops. |
| 9 (VS) | Analog power supply | 2.7–5.5-V single supply; powers amplifier and internal reference circuitry; decoupling required near pin. |
| 10 (REF2), 11 (REF1) | Reference voltage inputs | Set output common-mode level; differential reference (REF1–REF2)/2 defines zero-current output voltage. |
| 13 (OUT) | Voltage output | Analog output = 100 mV/A × Isense + (REF1–REF2)/2; rail-to-rail capable with 10-mV GND and 200-mV VS headroom. |
| 6 (GND), 15 (NC) | Ground / Reserved | GND is analog ground reference; NC pin (15) must be connected to GND per TI layout guidance. |
| 7 (DNC1), 14 (DNC2) | Do-not-connect | Floating DNC pins; must remain unconnected to avoid parasitic coupling or latch-up risk. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2-mΩ shunt | 0.1% tolerance, 3-nH inductance, and 10-ppm/°C TC (0°C–125°C) enable stable current measurement without external resistor selection or layout tuning. |
| Enhanced PWM rejection | Suppresses >90-dB AC CMRR at 50 kHz to maintain signal integrity during rapid common-mode transients in motor gate-drive environments. |
| Zero-drift architecture | Delivers <125 µA/°C offset drift and <45 ppm/°C gain drift-critical for maintaining accuracy across wide ambient and self-heating temperature swings. |
| System-calibrated gain | Combined shunt + amplifier matching achieves ≤0.4% total system gain error-eliminates need for end-of-line calibration in volume production. |
| Thermally robust package | 20-pin TSSOP with 4.5-mΩ total package resistance rated for ±15-A continuous current at 85°C ambient, derated to 10-A at 125°C. |
Applications
| Motor Phase Current Monitoring | Solenoid Valve Control |
|---|---|
Use Scenario: Real-time phase current measurement in 3-phase BLDC motor drives operating at 20–50 kHz PWM frequency with 48-V bus. IC Role / Device Role / Timing Role: Bidirectional current-shunt monitor providing isolated, high-bandwidth analog feedback to MCU ADC for field-oriented control (FOC) loop closure. Use Value: 350-kHz bandwidth and enhanced PWM rejection ensure clean current waveforms during high-dv/dt switching, enabling precise torque regulation and overcurrent protection. | Use Scenario: Closed-loop current regulation in industrial pneumatic solenoid valves driven by H-bridge with 100-Hz–1-kHz PWM modulation. IC Role / Device Role / Timing Role: High-side current sensor feeding analog feedback to PID controller for dynamic current limiting and position stabilization. Use Value: ±15-A continuous rating and –4 V to +80 V common-mode range support direct high-side sensing on 24-V/48-V valve supplies without level shifters or isolation. |
| Transmission Control Unit Sensing | DC/DC Converter Output Monitoring |
Use Scenario: Bidirectional current monitoring of clutch actuator coils in automotive 12-V transmission control modules with transient immunity requirements. IC Role / Device Role / Timing Role: Precision current monitor interfacing with microcontroller ADC to detect coil open/short faults and verify engagement timing. Use Value: 0.1% shunt tolerance and 120-dB DC CMRR ensure reliable fault detection even under battery ripple and EMI-rich under-hood conditions. | Use Scenario: Output current sensing in 48-V to 12-V buck converters for server power distribution units (PDUs) operating at 300–500 kHz switching frequency. IC Role / Device Role / Timing Role: Low-inductance shunt-based current monitor delivering fast-response analog output for cycle-by-cycle current limiting and thermal derating. Use Value: 3-nH shunt inductance and 350-kHz bandwidth prevent phase lag and overshoot in high-frequency current loops, improving transient response and stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | Automotive-grade AEC-Q100 qualified; 100-mV/A gain; no integrated shunt; requires external 2-mΩ resistor. | Requires PCB layout for Kelvin sensing and thermal management of external shunt; lacks system-calibrated accuracy. | Select when automotive qualification or extended temperature validation is mandatory and external shunt placement is feasible. |
| INA250A1IDR | Same 100-mV/A gain; integrated 2-mΩ shunt; but only 200-kHz bandwidth and no enhanced PWM rejection circuitry. | Limited transient immunity in high-dv/dt motor drive environments; lower bandwidth reduces overcurrent detection speed. | Select for cost-sensitive, lower-speed applications like battery management where PWM noise is minimal and 200-kHz suffices. |
Compared with INA253A1IPWR, INA240A1QDRQ1 trades integrated accuracy for automotive compliance and layout flexibility, while INA250A1IDR sacrifices PWM rejection and bandwidth for lower cost-making INA253A1IPWR optimal for high-fidelity, high-speed industrial current sensing where system-level calibration and transient immunity are non-negotiable.
Availability
INA253A1IPWR is available at Aetrix Electronics and suitable for motor controls, solenoid and valve controls, transmission control, and DC/DC converters requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for INA253A1IPWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and power management ICs.
The INA253 product line was designed specifically for high-accuracy, high-reliability bidirectional current sensing in industrial motor drives, solenoid actuators, and power conversion systems-integrating shunt and amplifier to eliminate system-level calibration.
FAQ
What is the maximum continuous current rating for the INA253A1IPWR?
The INA253A1IPWR supports ±15 A continuous current from –40°C to +85°C ambient temperature. At +125°C ambient, its continuous rating derates to ±10 A due to thermal limits of the 4.5-mΩ package resistance. This rating assumes standard PCB layout with 1-oz copper planes and no forced airflow; improved thermal design extends full-rating operation across the full temperature range.
Does the INA253A1IPWR require external calibration to achieve specified accuracy?
No, the INA253A1IPWR does not require external calibration. Its integrated 2-mΩ shunt resistor is factory-matched to the zero-drift amplifier, achieving ≤0.4% system gain error and <125 µA/°C offset drift without user calibration. This system-level calibration is inherent to the INA253A1IPWR design and validated across –40°C to +125°C.
How does the enhanced PWM rejection feature of the INA253A1IPWR improve performance in motor drive applications?
The enhanced PWM rejection in the INA253A1IPWR provides 90-dB AC CMRR at 50 kHz and suppresses large dv/dt transients before amplification-reducing output ringing and distortion during high-frequency gate switching. In motor drive applications, this preserves waveform fidelity for FOC algorithms and enables reliable overcurrent detection without post-processing filtering.
Can the INA253A1IPWR be used for both high-side and low-side current sensing?
Yes, the INA253A1IPWR supports both high-side and low-side bidirectional current sensing due to its –4 V to +80 V common-mode input range and rail-to-rail output swing. For high-side sensing, connect IS+ to the supply rail and IS– to the load; for low-side, reverse the connection. The device maintains accuracy regardless of common-mode voltage as long as it stays within the specified range.
What is the purpose of the REF1 and REF2 pins on the INA253A1IPWR?
The REF1 and REF2 pins set the output common-mode voltage of the INA253A1IPWR. The output voltage equals 100 mV/A × Isense + (REF1 – REF2)/2. By biasing these pins-e.g., REF1 = VS and REF2 = GND-the user configures zero-current output to VS/2, enabling optimal ADC utilization in single-supply systems. Both pins accept 0 V to VS.
INA253A1IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2.4V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 350 kHz
- Current - Input Bias:
- 90 µA
- Voltage - Input Offset:
- -
- Current - Supply:
- 1.8mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
INA253A1IPWR FAQ
1.How can I place an order for INA253A1IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA253A1IPWR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for INA253A1IPWR reliable?
The price and inventory of INA253A1IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA253A1IPWR is usually 5 days.
3.What payment methods are accepted for INA253A1IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA253A1IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA253A1IPWR?
INA253A1IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA253A1IPWR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for INA253A1IPWR?
For technical support, including INA253A1IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA253A1IPWR requirements.
6.How does Aetrix verify that INA253A1IPWR is sourced from the original manufacturer or authorized distributors?
All INA253A1IPWR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that INA253A1IPWR meets industry standards.
7.What is the process for return or replacement of INA253A1IPWR?
All INA253A1IPWR units undergo pre-shipment inspection (PSI). If there is an issue with INA253A1IPWR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The INA253A1IPWR part is unused and in its original packaging.
Return procedure for INA253A1IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA253A1IPWR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
