Specifications
| Type | Description |
|---|---|
| Part Number | INA190 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SC70-6 2.00 mm x 1.25 mm; SOT-23-8 1.60 mm x 2.90 mm; UQFN-10 1.80 mm x 1.40 mm |
| Supply Voltage Range | 1.7 to 5.5 V; recommended operating conditions |
| Common-Mode Input Range | GND - 0.2 to 40 V; recommended operating conditions |
| Input Pin Voltage Range | GND - 0.2 to 40 V; recommended operating conditions |
| Reference Pin Voltage Range | GND to VS; recommended operating conditions |
| Operating Free-Air Temperature | -40 to 125 °C; recommended operating conditions |
| Absolute Maximum Supply Voltage | 6 V; absolute maximum ratings |
| Absolute Maximum Differential Input Voltage | -42 to 42 V; VIN+ - VIN- |
| Absolute Maximum Analog Input Voltage | GND - 0.3 to 42 V; VIN+ and VIN- with respect to GND |
| Absolute Maximum Enable Pin Voltage | GND - 0.3 to 6 V; VENABLE |
| Absolute Maximum REF and OUT Voltage | GND - 0.3 to VS + 0.3 V; REF, OUT pins |
| Maximum Input Current Into Any Pin | 5 mA; absolute maximum ratings |
| Absolute Maximum Operating Temperature | -55 to 150 °C; TA |
| Junction Temperature | 150 °C; absolute maximum ratings |
| Storage Temperature | -65 to 150 °C; absolute maximum ratings |
| ESD Rating HBM | ±3000 V; ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±1000 V; JEDEC JESD22-C101 |
| Common-Mode Rejection Ratio | 132 min, 150 typ dB; VSENSE=0 mV, VIN+=-0.1 V to 40 V, TA=-40°C to +125°C |
| Offset Voltage RTI | -3 typ, ±15 max µV; VS=1.8 V, VSENSE=0 mV |
| Offset Drift RTI | 10 typ, 80 max nV/°C; VSENSE=0 mV, TA=-40°C to +125°C |
| Power-Supply Rejection Ratio RTI | -1 typ, ±5 max µV/V; VSENSE=0 mV, VS=1.7 V to 5.5 V |
| Input Bias Current | 0.5 typ, 3 max nA; VSENSE=0 mV |
| Input Offset Current | ±0.07 typ nA; VSENSE=0 mV |
| Gain INA190A1 | 25 V/V; A1 device |
| Gain INA190A2 | 50 V/V; A2 device |
| Gain INA190A3 | 100 V/V; A3 device |
| Gain INA190A4 | 200 V/V; A4 device |
| Gain INA190A5 | 500 V/V; A5 device |
| Gain Error INA190A1 | -0.04 typ, ±0.2 max %; VOUT=0.1 V to VS-0.1 V |
| Gain Error INA190A2/A3/A4 | -0.06 typ, ±0.3 max %; VOUT=0.1 V to VS-0.1 V |
| Gain Error INA190A5 | -0.08 typ, ±0.4 max %; VOUT=0.1 V to VS-0.1 V |
| Gain Error Drift | 2 typ, 7 max ppm/°C; TA=-40°C to +125°C |
| Nonlinearity Error | ±0.01 typ %; VOUT=0.1 V to VS-0.1 V |
| Reference Voltage Rejection Ratio INA190A1 | ±2 typ, ±10 max µV/V; VREF=100 mV to VS-100 mV, TA=-40°C to +125°C |
| Reference Voltage Rejection Ratio INA190A2 | ±1 typ, ±6 max µV/V; VREF=100 mV to VS-100 mV, TA=-40°C to +125°C |
| Reference Voltage Rejection Ratio INA190A3 | ±0.5 typ, ±4 max µV/V; VREF=100 mV to VS-100 mV, TA=-40°C to +125°C |
| Reference Voltage Rejection Ratio INA190A4/A5 | ±0.25 typ, ±3 max µV/V; VREF=100 mV to VS-100 mV, TA=-40°C to +125°C |
| Maximum Capacitive Load | 1 nF; no sustained oscillation |
| Output Swing to VS Rail | VS-20 typ, VS-40 max mV; VS=1.8 V, RL=10 kΩ to GND, TA=-40°C to +125°C |
| Output Swing to GND | VGND+0.05 typ, VGND+1 max mV; VS=1.8 V, RL=10 kΩ to GND, TA=-40°C to +125°C, VSENSE=-10 mV, VREF=0 V |
| Zero Current Output Voltage INA190A1/A2/A3 | VGND+1 typ, VGND+3 max mV; VS=1.8 V, RL=10 kΩ to GND, VREF=0 V, TA=-40°C to +125°C, VSENSE=0 mV |
| Zero Current Output Voltage INA190A4 | VGND+2 typ, VGND+4 max mV; VS=1.8 V, RL=10 kΩ to GND, VREF=0 V, TA=-40°C to +125°C, VSENSE=0 mV |
| Zero Current Output Voltage INA190A5 | VGND+3 typ, VGND+9 max mV; VS=1.8 V, RL=10 kΩ to GND, VREF=0 V, TA=-40°C to +125°C, VSENSE=0 mV |
| Bandwidth INA190A1 | 45 kHz; CLOAD=10 pF |
| Bandwidth INA190A2 | 37 kHz; CLOAD=10 pF |
| Bandwidth INA190A3 | 35 kHz; CLOAD=10 pF |
| Bandwidth INA190A4 | 33 kHz; CLOAD=10 pF |
| Bandwidth INA190A5 | 27 kHz; CLOAD=10 pF |
| Slew Rate | 0.3 V/µs; VS=5.0 V, VOUT=0.5 V to 4.5 V |
| Settling Time | 30 µs; from current step to within 1% of final value |
| Voltage Noise Density RTI | 75 nV/√Hz; TA=25°C, VS=1.8 V, VIN+=12 V, VREF=VS/2, VENABLE=VS |
| Enable Leakage Input Current | 1 typ, 100 max nA; 0 V ≤ VENABLE ≤ VS |
| Enable High-Level Input Voltage | 0.7 × VS min, 6 max V; ENABLE input |
| Enable Low-Level Input Voltage | 0 min, 0.3 × VS max V; ENABLE input |
| Enable Hysteresis | 300 mV; ENABLE input |
| Disabled Output Leakage | 1 typ, 5 max µA; VS=5.0 V, VOUT=0 V to 5.0 V, VENABLE=0 V |
| Quiescent Current | 48 typ, 65 max µA; VS=1.8 V, VSENSE=0 mV |
| Quiescent Current Over Temperature | 90 max µA; VS=1.8 V, VSENSE=0 mV, TA=-40°C to +125°C |
| Disabled Quiescent Current | 10 typ, 100 max nA; VENABLE=0 V, VSENSE=0 mV |
| Datasheet Status | request_only |
Product Overview
The INA190 is a Texas Instruments precision current-sense amplifier in the Signal_Chain category. It is specified for operation from a 1.7 to 5.5 V supply with inputs rated for a recommended common-mode range of GND - 0.2 to 40 V. The reference pin operates from GND to VS, supporting output level positioning within the supplied range.
Accuracy-related specifications include 132 dB minimum and 150 dB typical common-mode rejection ratio, -3 µV typical RTI offset voltage with ±15 µV maximum offset, and 10 nV/°C typical offset drift. Gain versions include 25, 50, 100, 200, and 500 V/V options, with gain error limits ranging from ±0.2% to ±0.4% depending on version.
The device is available in SC70-6, SOT-23-8, and UQFN-10 package options. It supports -40 to 125 °C operating free-air temperature, 1 nF maximum capacitive load without sustained oscillation, and enable control with 300 mV hysteresis.
Key Features
- 1.7 to 5.5 V recommended supply range
- GND - 0.2 to 40 V common-mode input range
- 132 dB minimum common-mode rejection ratio
- ±15 µV maximum RTI offset voltage
- Gain options from 25 V/V to 500 V/V
- 48 µA typical quiescent current at 1.8 V
- 10 nA typical disabled quiescent current
- -40 to 125 °C operating free-air temperature
- SC70-6, SOT-23-8, and UQFN-10 packages
- 300 mV enable input hysteresis
Typical Applications
- Current sensing in 1.7 to 5.5 V systems
- 40 V common-mode rail monitoring
- Low quiescent-current signal-chain designs
- Gain-configurable current measurement
- Enabled and disabled measurement paths
- Temperature-rated current sensing circuits
Procurement Notes
When requesting a quote for INA190, 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 supply voltage range does the INA190 support?
The INA190 is specified for a recommended supply voltage range of 1.7 to 5.5 V. Its absolute maximum supply voltage is 6 V, so system operation should stay within the recommended operating range.
What common-mode input range is specified for INA190?
The recommended common-mode input range is GND - 0.2 to 40 V. The analog input absolute maximum rating is GND - 0.3 to 42 V for VIN+ and VIN- with respect to GND.
Which gain versions are included in the INA190 family?
The extracted specifications list INA190A1 at 25 V/V, INA190A2 at 50 V/V, INA190A3 at 100 V/V, INA190A4 at 200 V/V, and INA190A5 at 500 V/V.
What packages are listed for the INA190?
The INA190 package options listed are SC70-6 measuring 2.00 mm x 1.25 mm, SOT-23-8 measuring 1.60 mm x 2.90 mm, and UQFN-10 measuring 1.80 mm x 1.40 mm.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 7, 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.