Specifications
| Type | Description |
|---|---|
| Part Number | INA240 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 8-pin TSSOP (PW), 3.00 mm x 4.40 mm; 8-pin SOIC (D), 4.90 mm x 3.91 mm |
| Common-Mode Input Voltage Range | -4 V to 80 V; Recommended operating conditions, over operating free-air temperature range |
| Operating Supply Voltage | 2.7 V to 5.5 V; Recommended operating conditions |
| Operating Free-Air Temperature | -40°C to 125°C; Recommended operating conditions |
| Supply Voltage Absolute Maximum | 6 V max; Absolute maximum ratings |
| Analog Input Differential Voltage Absolute Maximum | -80 V to 80 V; Absolute maximum ratings, (VIN+) - (VIN-) |
| Analog Input Common-Mode Voltage Absolute Maximum | -6 V to 90 V; Absolute maximum ratings, VIN+ and VIN- |
| REF1, REF2, NC Input Voltage Absolute Maximum | GND - 0.3 V to VS + 0.3 V; Absolute maximum ratings |
| Output Voltage Absolute Maximum | GND - 0.3 V to VS + 0.3 V; Absolute maximum ratings |
| Operating Free-Air Temperature Absolute Maximum | -55°C to 150°C; Absolute maximum ratings |
| Junction Temperature Absolute Maximum | 150°C max; Absolute maximum ratings |
| Storage Temperature | -65°C to 150°C; Absolute maximum ratings |
| ESD Rating, HBM | ±2000 V; Human-body model per ANSI/ESDA/JEDEC JS-001 |
| ESD Rating, CDM | ±1000 V; Charged-device model per JEDEC JESD22-C101 |
| Common-Mode Rejection Ratio, DC | 120 dB min, 132 dB typ; VIN+ = -4 V to 80 V, VSENSE = 0 mV, TA = -40°C to 125°C |
| Common-Mode Rejection Ratio, AC | 93 dB typ; f = 50 kHz |
| Input-Referred Offset Voltage | ±5 µV typ, ±25 µV max; VSENSE = 0 mV, TA = 25°C, VS = 5 V, VCM = 12 V, VREF1 = VREF2 = VS/2 |
| Offset Voltage Drift | ±50 nV/°C typ, ±250 nV/°C max; VSENSE = 0 mV, TA = -40°C to 125°C |
| Power-Supply Rejection Ratio | ±1 µV/V typ, ±10 µV/V max; VS = 2.7 V to 5.5 V, VSENSE = 0 mV, TA = -40°C to 125°C |
| Input Bias Current | 90 µA typ; IB+ and IB-, VSENSE = 0 mV |
| Reference Input Range | 0 V to VS; REF1 and REF2 inputs |
| Gain, INA240A1 | 20 V/V; Fixed gain version |
| Gain, INA240A2 | 50 V/V; Fixed gain version |
| Gain, INA240A3 | 100 V/V; Fixed gain version |
| Gain, INA240A4 | 200 V/V; Fixed gain version |
| Gain Error | ±0.05% typ, ±0.20% max; GND + 50 mV <= VOUT <= VS - 200 mV |
| Gain Drift | ±0.5 ppm/°C typ, ±2.5 ppm/°C max; TA = -40°C to 125°C |
| Non-Linearity Error | ±0.01% typ; GND + 10 mV <= VOUT <= VS - 200 mV |
| Reference Divider Accuracy | 0.02% typ, 0.1% max; VOUT = |(VREF1 - VREF2)| / 2 at VSENSE = 0 mV, TA = -40°C to 125°C |
| Reference Voltage Rejection Ratio, INA240A1 | 20 µV/V typ; Input-referred |
| Reference Voltage Rejection Ratio, INA240A3 | 5 µV/V typ; Input-referred |
| Reference Voltage Rejection Ratio, INA240A2 and INA240A4 | 2 µV/V typ; Input-referred |
| Maximum Capacitive Load | 1 nF; No sustained oscillation |
| Output Swing to VS Rail | VS - 0.05 V typ, VS - 0.2 V max; RL = 10 kΩ to GND, TA = -40°C to 125°C |
| Output Swing to GND | VGND + 1 mV typ, VGND + 10 mV max; RL = 10 kΩ to GND, VSENSE = 0 mV, VREF1 = VREF2 = 0 V, TA = -40°C to 125°C |
| Bandwidth | 400 kHz typ; All gains, -3 dB bandwidth |
| Input Signal Bandwidth | 100 kHz typ; All gains, 2% THD+N |
| Settling Time, INA240A1 | 9.6 µs typ; Output settles to 0.5% of final value |
| Settling Time, INA240A4 | 9.8 µs typ; Output settles to 0.5% of final value |
| Slew Rate | 2 V/µs typ; TA = 25°C, VS = 5 V, VCM = 12 V, VREF1 = VREF2 = VS/2 unless otherwise noted |
| Input-Referred Voltage Noise Density | 40 nV/√Hz typ; Noise specification, input referred |
| Quiescent Current | 1.8 mA typ, 2.4 mA max; VSENSE = 0 mV |
| Quiescent Current Over Temperature | 2.6 mA max; TA = -40°C to 125°C |
| Junction-to-Ambient Thermal Resistance, TSSOP | 149.1°C/W; PW package, 8 pins |
| Junction-to-Ambient Thermal Resistance, SOIC | 113.5°C/W; D package, 8 pins |
| Datasheet Status | request_only |
Product Overview
The INA240 is a Texas Instruments current sense amplifier in the Signal_Chain category. It is specified for current measurement across a -4 V to 80 V recommended common-mode input range while operating from a 2.7 V to 5.5 V supply. The device supports REF1 and REF2 reference inputs from 0 V to VS, allowing the output reference point to be set within the supply range.
Key Features
- -4 V to 80 V recommended common-mode input range
- 2.7 V to 5.5 V operating supply range
- -40°C to 125°C specified operating temperature range
- 20, 50, 100, and 200 V/V gain options
- 120 dB minimum DC common-mode rejection ratio
- ±5 µV typical input-referred offset voltage
- ±0.05% typical gain error specification
- 400 kHz typical bandwidth across all gains
- 2 V/µs typical slew rate at specified conditions
- 40 nV/√Hz typical input-referred voltage noise density
- 1.8 mA typical quiescent current at zero sense voltage
- 8-pin TSSOP and 8-pin SOIC package options
Typical Applications
- High-side current measurement
- Low-side current measurement
- Bidirectional current sensing
- Industrial current monitoring
- Power supply current feedback
- Current measurement with referenced output
- Wide common-mode current monitoring
Procurement Notes
When requesting a quote for INA240, 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 INA240 use?
The INA240 operates from a 2.7 V to 5.5 V supply under recommended operating conditions. The absolute maximum supply voltage rating is 6 V, so designs should remain within the recommended operating range for normal operation.
What common-mode input range is specified for INA240?
The recommended common-mode input voltage range is -4 V to 80 V over the operating free-air temperature range. The absolute maximum common-mode voltage rating for VIN+ and VIN- is -6 V to 90 V.
Which fixed gain versions are available for INA240?
The extracted datasheet facts list four fixed-gain versions: INA240A1 at 20 V/V, INA240A2 at 50 V/V, INA240A3 at 100 V/V, and INA240A4 at 200 V/V.
What package options are listed for the INA240?
The INA240 is listed in an 8-pin TSSOP (PW) package measuring 3.00 mm x 4.40 mm and an 8-pin SOIC (D) package measuring 4.90 mm x 3.91 mm.
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.