Specifications
| Type | Description |
|---|---|
| Part Number | INA823 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 8-pin SOIC (D), 4.90 mm x 3.91 mm; 8-pin VSSOP (DGK), 3.00 mm x 3.00 mm |
| Supply Voltage | 2.7 V to 36 V; single-supply operation |
| Supply Voltage | ±1.35 V to ±18 V; dual-supply operation |
| Specified Temperature Range | -40°C to +125°C; recommended operating conditions |
| Input Overvoltage Protection | ±60 V; TA = -40°C to +125°C |
| Input Stage Offset Voltage | 20 µV typ, 100 µV max; TA = 25°C, VS = ±15 V, RL = 10 kΩ, VCM = VREF = 0 V, G = 1 |
| Input Stage Offset Voltage | 190 µV max; TA = -40°C to +125°C |
| Input Stage Offset Voltage Drift | 0.2 µV/°C typ, 1.2 µV/°C max; TA = -40°C to +125°C |
| Output Stage Offset Voltage | 140 µV typ, 450 µV max; TA = 25°C, VS = ±15 V, RL = 10 kΩ, VCM = VREF = 0 V, G = 1 |
| Output Stage Offset Voltage | 850 µV max; TA = -40°C to +125°C |
| Output Stage Offset Voltage Drift | 1 µV/°C typ, 5 µV/°C max; TA = -40°C to +125°C |
| Power-Supply Rejection Ratio | 100 dB min, 130 dB typ; G = 1, RTI, VS = ±1.35 V to ±18 V |
| Power-Supply Rejection Ratio | 115 dB min, 148 dB typ; G = 10, RTI, VS = ±1.35 V to ±18 V |
| Power-Supply Rejection Ratio | 120 dB min, 148 dB typ; G = 100 or G = 1000, RTI, VS = ±1.35 V to ±18 V |
| Input Impedance | 12 GΩ || 8.5 pF; input pins |
| RFI Filter -3 dB Frequency | 20 MHz; input RFI filter |
| Operating Input Voltage Range | (–VS) - 0.15 V to (+VS) - 1 V; VS = ±1.35 V to ±18 V |
| Common-Mode Rejection Ratio | 84 dB min, 110 dB typ; G = 1, RTI, dc to 60 Hz, VCM = (V-) - 0.15 V to (V+) - 1 V |
| Common-Mode Rejection Ratio | 104 dB min, 136 dB typ; G = 10, RTI, dc to 60 Hz, VCM = (V-) - 0.15 V to (V+) - 1 V |
| Common-Mode Rejection Ratio | 120 dB min, 149 dB typ; G ≥ 100, RTI, dc to 60 Hz, VCM = (V-) - 0.15 V to (V+) - 1 V |
| Input Bias Current | 1.2 nA typ, 8 nA max; TA = 25°C |
| Input Bias Current | 2.4 nA typ; TA = -40°C to +125°C |
| Input Bias Current Drift | 15 pA/°C; TA = -40°C to +125°C |
| Input Offset Current | 0.4 nA typ, 4 nA max; TA = 25°C |
| Input Offset Current | 0.8 nA typ; TA = -40°C to +125°C |
| Input Offset Current Drift | 4 pA/°C; TA = -40°C to +125°C |
| Input Stage Voltage Noise Density | 21 nV/√Hz; f = 1 kHz, G = 1000, RS = 0 Ω |
| Input Stage Voltage Noise | 0.4 µVPP; fB = 0.1 Hz to 10 Hz, G = 1000, RS = 0 Ω |
| Output Stage Voltage Noise Density | 120 nV/√Hz; f = 1 kHz, RS = 0 Ω |
| Output Stage Voltage Noise | 5 µVPP; fB = 0.1 Hz to 10 Hz, RS = 0 Ω |
| Current Noise Density | 160 fA/√Hz; f = 1 kHz |
| Current Noise | 5 pAPP; fB = 0.1 Hz to 10 Hz, G = 100 |
| Gain Equation | G = 1 + (100 kΩ / RG); external gain resistor between RG pins |
| Gain Range | 1 V/V to 10000 V/V; set by external RG resistor |
| Gain Error | ±0.01% typ, ±0.04% max; G = 1, VO = ±10 V |
| Gain Error | ±0.025% typ, ±0.2% max; G = 10 or G = 100, VO = ±10 V |
| Gain Error | ±0.05% typ, ±0.2% max; G = 1000, VO = ±10 V |
| Gain Drift | ±0.2 ppm/°C typ, ±5 ppm/°C max; G = 1, TA = -40°C to +125°C |
| Gain Drift | ±12 ppm/°C typ, ±35 ppm/°C max; G > 1, TA = -40°C to +125°C, excludes external gain resistor effects |
| Gain Nonlinearity | 2 ppm typ, 10 ppm max; G = 1 to 10 |
| Gain Nonlinearity | 5 ppm typ; G > 10 |
| Gain Nonlinearity | 15 ppm; G = 1 to 100, RL = 2 kΩ |
| Output Voltage Swing | (–VS) + 0.15 V to (+VS) - 0.15 V; TA = 25°C, VS = ±15 V, RL = 10 kΩ, G = 1 |
| Load Capacitance | 1000 pF; stable operation |
| Short-Circuit Current | ±20 mA; continuous to VS / 2 |
| Bandwidth | 1.9 MHz; -3 dB, G = 1 |
| Bandwidth | 350 kHz; -3 dB, G = 10 |
| Bandwidth | 60 kHz; -3 dB, G = 100 |
| Bandwidth | 6 kHz; -3 dB, G = 1000 |
| Slew Rate | 0.9 V/µs; G = 1, VO = ±10 V |
| Settling Time to 0.01% | 12 µs; G = 1 to 10, VSTEP = 10 V |
| Settling Time to 0.01% | 28 µs; G = 100, VSTEP = 10 V |
| Settling Time to 0.01% | 260 µs; G = 1000, VSTEP = 10 V |
| Settling Time to 0.001% | 14 µs; G = 1 to 10, VSTEP = 10 V |
| Settling Time to 0.001% | 33 µs; G = 100, VSTEP = 10 V |
| Settling Time to 0.001% | 290 µs; G = 1000, VSTEP = 10 V |
| Reference Input Impedance | 100 kΩ; REF pin |
| Reference Input Voltage Range | (–VS) to (+VS); REF pin |
| Reference Gain to Output | 1 V/V; REF pin to output |
| Reference Gain Error | 0.01% typ, 0.05% max; inside output voltage swing |
| Quiescent Current | 180 µA typ, 250 µA max; VIN = 0 V, TA = 25°C |
| Quiescent Current | 300 µA max; VIN = 0 V, TA = -40°C to +125°C |
| Absolute Maximum Supply Voltage | ±20 V; dual supply, VS = (+VS) - (–VS) |
| Absolute Maximum Supply Voltage | 40 V; single supply, VS = (+VS) |
| Absolute Maximum IN Pin Voltage | (–VS) - 60 V to (+VS) + 60 V; IN pins |
| Absolute Maximum RG, REF, OUT Pin Voltage | (–VS) - 0.5 V to (+VS) + 0.5 V; RG, REF, OUT pins |
| Absolute Maximum RG Pin Current | -10 mA to +10 mA; RG pins |
| Absolute Maximum OUT Pin Current | -50 mA to +50 mA; OUT pin |
| ESD Rating HBM | ±2000 V; human-body model, ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±750 V; charged-device model, ANSI/ESDA/JEDEC JS-002 |
| Thermal Resistance Junction-to-Ambient | 126.7°C/W; D SOIC, 8 pins |
| Thermal Resistance Junction-to-Ambient | 167.5°C/W; DGK VSSOP, 8 pins |
| Pin Configuration | RG pins 1 and 8; -IN pin 2; +IN pin 3; -VS pin 4; REF pin 5; OUT pin 6; +VS pin 7; 8-pin SOIC and 8-pin VSSOP top view |
| Datasheet Status | request_only |
Product Overview
The INA823 is a Texas Instruments precision instrumentation amplifier in the Signal_Chain category. It operates from 2.7 V to 36 V on a single supply or ±1.35 V to ±18 V on dual supplies, with recommended operation over -40°C to +125°C. Input pins include ±60 V overvoltage protection, and the input impedance is specified as 12 GΩ || 8.5 pF.
Gain is set with an external resistor between the RG pins using G = 1 + (100 kΩ / RG), covering 1 V/V to 10000 V/V. Bandwidth is 1.9 MHz at G = 1, 350 kHz at G = 10, 60 kHz at G = 100, and 6 kHz at G = 1000. The amplifier also specifies CMRR up to 149 dB typical at G ≥ 100 and PSRR up to 148 dB typical at higher gains.
Package options are 8-pin SOIC and 8-pin VSSOP. The top-view pinout assigns RG to pins 1 and 8, inputs to pins 2 and 3, supplies to pins 4 and 7, REF to pin 5, and OUT to pin 6. Applications include precision sensor signal conditioning, low-level differential measurements, and reference-shifted output stages.
Key Features
- 2.7 V to 36 V single-supply operating range
- ±1.35 V to ±18 V dual-supply operating range
- -40°C to +125°C specified operating temperature range
- ±60 V input overvoltage protection across temperature
- Gain set by external RG resistor
- 1 V/V to 10000 V/V programmable gain range
- 12 GΩ || 8.5 pF input impedance
- CMRR up to 149 dB typical at G ≥ 100
- PSRR up to 148 dB typical at higher gains
- 1.9 MHz bandwidth at gain of 1
- 0.9 V/µs slew rate at gain of 1
- 180 µA typical quiescent current at 25°C
Typical Applications
- Low-level differential signal conditioning
- Precision sensor interface circuits
- Bridge measurement gain stages
- Reference-shifted output signal chains
- High common-mode rejection measurements
- Low-power instrumentation circuits
- Overvoltage-tolerant input measurement nodes
Procurement Notes
When requesting a quote for INA823, 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 ranges does the INA823 support?
The INA823 supports 2.7 V to 36 V single-supply operation and ±1.35 V to ±18 V dual-supply operation. The recommended operating temperature range is -40°C to +125°C.
How is gain configured on the INA823?
Gain is set with an external resistor between the RG pins. The datasheet equation is G = 1 + (100 kΩ / RG), and the supported gain range is 1 V/V to 10000 V/V.
What package options are listed for INA823?
The listed package options are 8-pin SOIC (D), 4.90 mm x 3.91 mm, and 8-pin VSSOP (DGK), 3.00 mm x 3.00 mm. Both use the same top-view pin assignment.
What input protection is specified for INA823?
The input pins are specified with ±60 V input overvoltage protection over TA = -40°C to +125°C. The absolute maximum IN pin range is (–VS) - 60 V to (+VS) + 60 V.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 8, 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.