Specifications
| Type | Description |
|---|---|
| Part Number | INA197 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | DBV package, 5-pin SOT-23, 2.90 mm x 1.60 mm nominal body |
| Gain | 50 V/V; INA197 device option |
| Pinout | Pinout #2; INA197 device option |
| Supply Voltage Absolute Maximum | 18 V max; over operating free-air temperature range |
| Analog Input Voltage Absolute Maximum | -18 V to 18 V; VIN+ and VIN- pins |
| Differential Input Voltage Absolute Maximum | -18 V to 18 V; VIN+ - VIN- |
| Common-Mode Voltage Absolute Maximum | -16 V to 80 V; input voltage may exceed listed voltage if pin current limited to 5 mA |
| Analog Output Voltage Absolute Maximum | GND - 0.3 V to V+ + 0.3 V; OUT pin |
| Input Current Into Any Pin Absolute Maximum | 5 mA max; any pin |
| Operating Temperature Absolute Maximum | -55°C to 150°C; over operating free-air temperature range |
| Junction Temperature Absolute Maximum | 150°C max; over operating free-air temperature range |
| Storage Temperature | -65°C to 150°C; Tstg |
| ESD Rating HBM | ±4000 V; human body model per ANSI/ESDA/JEDEC JS-001, all pins |
| ESD Rating CDM | ±1000 V; charged device model per JEDEC JESD22-C101, all pins |
| Recommended Common-Mode Input Voltage | 12 V nominal; recommended operating conditions |
| Recommended Operating Supply Voltage | 12 V nominal; recommended operating conditions |
| Recommended Operating Free-Air Temperature | -40°C to 125°C; recommended operating conditions |
| Junction-to-Ambient Thermal Resistance | 221.7°C/W; DBV SOT-23, 5 pins |
| Junction-to-Case Top Thermal Resistance | 144.7°C/W; DBV SOT-23, 5 pins |
| Junction-to-Board Thermal Resistance | 49.7°C/W; DBV SOT-23, 5 pins |
| Junction-to-Top Characterization Parameter | 26.1°C/W; DBV SOT-23, 5 pins |
| Junction-to-Board Characterization Parameter | 49.0°C/W; DBV SOT-23, 5 pins |
| Full-Scale Input Voltage | 0.15 V typ, (VS - 0.2)/Gain max; VSENSE = VIN+ - VIN-, TA=25°C, VS=12 V, VIN+=12 V, VSENSE=100 mV unless otherwise noted |
| Common-Mode Input Range | -16 V to 80 V; electrical characteristics |
| Common-Mode Rejection | 80 dB min, 94 dB typ; VIN+ = -16 V to 80 V, TA=25°C |
| Common-Mode Rejection Over Temperature | 100 dB min, 120 dB typ; VIN+ = 12 V to 80 V, TA=-40°C to 125°C |
| Input Offset Voltage RTI | ±0.5 mV typ, 2 mV max; TA=25°C |
| Input Offset Voltage RTI Over Temperature | 0.5 mV typ, 3 mV max; TA=-40°C to 125°C |
| Input Offset Voltage Drift | 2.5 µV/°C typ; RTI versus temperature |
| Power-Supply Rejection | 5 µV/V typ, 100 µV/V max; VS=2.7 V to 18 V, VIN+=18 V |
| Input Bias Current VIN- | ±8 µA typ, ±16 µA max; electrical characteristics |
| Gain Error | ±0.2% typ, ±1% max; VSENSE=20 mV to 100 mV, TA=25°C |
| Gain Error Over Temperature | ±2% max; VSENSE=20 mV to 100 mV, TA=-40°C to 125°C |
| Total Output Error | ±0.75% typ, ±2.2% max; VSENSE=100 mV; includes gain error and offset voltage |
| Total Output Error Over Temperature | ±1% typ, ±3% max; VSENSE=100 mV; includes gain error and offset voltage |
| Nonlinearity Error | ±0.002% typ, ±0.1% max; VSENSE=20 mV to 100 mV |
| Output Impedance | 1.5 Ω typ; electrical characteristics |
| Maximum Capacitive Load | 10 nF; no sustained oscillation |
| Low VSENSE Output Voltage | 300 mV max; all devices, -16 V ≤ VCM < 0 V, VSENSE < 20 mV |
| Low VSENSE Output Voltage | 300 mV max; all devices, VS < VCM ≤ 80 V, VSENSE < 20 mV |
| Low VSENSE Output Voltage | 1 V max; INA194/INA197, 0 V ≤ VCM ≤ VS, VS=5 V, VSENSE < 20 mV |
| Output Swing to V+ Rail | V+ - 0.1 V typ, V+ - 0.2 V max; voltage output, RL=100 kΩ to GND |
| Output Swing to GND | VGND + 3 mV typ, VGND + 50 mV max; voltage output, RL=100 kΩ to GND; specified by design |
| Bandwidth | 300 kHz typ; INA194/INA197, CLOAD=5 pF |
| Phase Margin | 40° typ; CLOAD < 10 nF |
| Slew Rate | 1 V/µs typ; electrical characteristics |
| Settling Time | 2 µs typ; 1% settling, VSENSE=10 mV to 100 mVPP, CLOAD=5 pF |
| Voltage Noise Density RTI | 40 nV/√Hz typ; electrical characteristics |
| Operating Supply Range | 2.7 V to 18 V; power supply electrical characteristics |
| Quiescent Current | 700 µA typ, 900 µA max; VOUT=2 V |
| Quiescent Current Over Temperature | 370 µA typ, 950 µA max; VSENSE=0 mV, TA=-40°C to 125°C |
| Specified Temperature Range | -40°C to 125°C; electrical characteristics |
| Operating Temperature Range | -55°C to 150°C; electrical characteristics |
| Thermal Resistance θJA | 200°C/W; SOT-23, electrical characteristics table |
| Pin 1 Function | OUT, output voltage; INA197 DBV package pinout #2 |
| Pin 2 Function | GND, ground; INA197 DBV package pinout #2 |
| Pin 3 Function | V+, power supply, 2.7 V to 18 V; INA197 DBV package pinout #2 |
| Pin 4 Function | VIN+, connect to supply side of shunt resistor; INA197 DBV package pinout #2 |
| Pin 5 Function | VIN-, connect to load side of shunt resistor; INA197 DBV package pinout #2 |
| Datasheet Status | request_only |
Product Overview
The INA197 is a Texas Instruments current shunt monitor in the Signal_Chain category. It is identified as the INA197 device option with 50 V/V gain and pinout #2. The device uses the DBV 5-pin SOT-23 package with a 2.90 mm x 1.60 mm nominal body, supporting compact current-sense layouts with OUT, GND, V+, VIN+, and VIN- pins.
Electrical operation is specified with a 2.7 V to 18 V supply range and a 12 V nominal recommended operating supply. The common-mode input range is -16 V to 80 V, with common-mode rejection specified at 80 dB minimum and 94 dB typical at 25°C. The INA197 also lists 300 kHz typical bandwidth, 1 V/µs typical slew rate, and 2 µs typical 1% settling time.
For shunt measurement, VIN+ connects to the supply side of the shunt resistor and VIN- connects to the load side. The specified operating free-air temperature range is -40°C to 125°C, while operating temperature limits extend from -55°C to 150°C.
Key Features
- 50 V/V gain for INA197 current shunt monitoring
- -16 V to 80 V common-mode input range
- 2.7 V to 18 V operating supply range
- 300 kHz typical bandwidth with 5 pF load
- 1 V/µs typical slew rate
- 2 µs typical 1% settling time
- ±0.2% typical gain error at 25°C
- 40 nV/√Hz typical RTI voltage noise density
- 5-pin SOT-23 DBV package
- -40°C to 125°C specified temperature range
Typical Applications
- Current shunt monitoring
- Supply-side shunt sensing
- Load-side shunt measurement
- 12 V nominal supply systems
- Wide common-mode current measurement
- SOT-23 signal-chain assemblies
Procurement Notes
When requesting a quote for INA197, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What gain does the INA197 current shunt monitor provide?
The INA197 device option provides a gain of 50 V/V. This value is listed for the INA197 option and applies to its current shunt monitor function.
What supply voltage range is specified for INA197 operation?
The INA197 operating supply range is 2.7 V to 18 V. The recommended operating supply voltage is listed as 12 V nominal, and the supply voltage absolute maximum is 18 V.
What common-mode input range does the INA197 support?
The INA197 electrical characteristics list a common-mode input range of -16 V to 80 V. Common-mode rejection is specified as 80 dB minimum and 94 dB typical at 25°C over VIN+ from -16 V to 80 V.
How are the shunt resistor connections assigned on the INA197?
For the INA197 DBV package pinout #2, VIN+ on pin 4 connects to the supply side of the shunt resistor, while VIN- on pin 5 connects to the load side. Pin 1 is OUT, pin 2 is GND, and pin 3 is V+.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.