Specifications
| Type | Description |
|---|---|
| Part Number | INA117 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Component Type | Other |
| Package / Case | INA117P: P (DIP, 8) 6.35 mm x 9.81 mm; INA117KU/INA117KU/2K5: D (SOIC, 8) 3.91 mm x 4.9 mm |
| Function | Precision unity-gain difference amplifier; integrated precision op amp and thin-film resistor network |
| Common-mode input range | ±200 V; VS=±15 V |
| Protected input common-mode overload | ±500 V; momentary common-mode overload |
| Protected input differential overload | ±500 V; momentary differential overload |
| Gain | 1 V/V; unity-gain difference amplifier |
| Gain error | ±0.01% typ, ±0.05% max; TA=25°C, VS=±15 V, RL=10 kΩ, VREF=0 V, VCM=VS/2, G=1 |
| Gain error drift | ±2 ppm/°C; TA=-40°C to 85°C |
| Gain nonlinearity | ±0.0002% typ, ±0.001% max of FSR; CSO: SHE; specified by wafer test |
| Gain nonlinearity | ±0.0005% typ, ±0.001% max of FSR; CSO: TID; specified by wafer test |
| DC CMRR | 70 dB min, 80 dB typ; CSO: SHE, VCM=-200 V to 200 V, TA=25°C |
| DC CMRR over temperature | 75 dB typ; CSO: SHE, VCM=-200 V to 200 V, TA=-40°C to 85°C |
| DC CMRR | 70 dB min, 100 dB typ; CSO: TID, VCM=-200 V to 200 V, TA=25°C |
| DC CMRR over temperature | 70 dB typ; CSO: TID, VCM=-200 V to 200 V, TA=-40°C to 85°C |
| AC CMRR | 66 dB min, 80 dB typ; CSO: SHE, 60 Hz, VCM=-200 V to 200 V |
| AC CMRR | 90 dB typ; CSO: TID, 500 Hz, VCM=-200 V to 200 V |
| AC CMRR | 90 dB typ; CSO: TID, 1 kHz, VCM=-200 V to 200 V |
| Offset voltage | 120 µV typ, 1000 µV max; RTO, P package, CSO: SHE |
| Offset voltage | 350 µV typ, 1000 µV max; RTO, P package, CSO: TID |
| Offset voltage | 600 µV typ, 2000 µV max; RTO, KU package, CSO: SHE |
| Offset voltage | 350 µV typ, 2000 µV max; RTO, KU package, CSO: TID |
| Offset voltage drift | 8.5 µV/°C typ; RTO, TA=-40°C to 85°C, CSO: SHE |
| Offset voltage drift | 3 µV/°C typ; RTO, TA=-40°C to 85°C, CSO: TID |
| Long-term drift | 200 µV/month; input offset voltage, RTO |
| Power-supply rejection ratio | 74 dB min, 90 dB typ; RTO, VS=±5 V to ±18 V |
| Input common-mode voltage | -200 V min, 200 V max; TA=25°C, VS=±15 V; varies with output voltage |
| Differential input voltage | -10 V min, 10 V max; TA=25°C, VS=±15 V |
| Differential input impedance | 800 kΩ; TA=25°C, VS=±15 V |
| Common-mode input impedance | 400 kΩ; CSO: SHE |
| Common-mode input impedance | 200 kΩ; CSO: TID |
| Voltage noise | 25 µVpp; RTO, fB=0.1 Hz to 10 Hz |
| Voltage noise density | 550 nV/√Hz; RTO, f=1 kHz |
| Output voltage swing | 10 V min, 12 V typ; CSO: SHE, IO=20 mA/-5 mA |
| Output voltage swing | 13.5 V min, 13.7 V typ; CSO: TID, IO=±6.75 mA |
| Output impedance | 0.01 Ω; TA=25°C, VS=±15 V |
| Stable load capacitance | 1 nF; CSO: SHE, stable operation |
| Stable load capacitance | 10 nF; CSO: TID, stable operation |
| Short-circuit current | 49 mA, -13 mA; CSO: SHE, continuous to VS/2 |
| Short-circuit current | 16 mA, -25 mA; CSO: TID, continuous to VS/2 |
| Bandwidth | 200 kHz; CSO: SHE, -3 dB |
| Bandwidth | 500 kHz; CSO: TID, -3 dB |
| Full power bandwidth | 30 kHz; CSO: SHE, VO=20 Vpp |
| Full power bandwidth | 32 kHz; CSO: TID, VO=2 Vpp |
| Slew rate | 1.7 V/µs min, 2.6 V/µs typ; CSO: SHE |
| Slew rate | 1.7 V/µs min, 5 V/µs typ; CSO: TID |
| Settling time | 6.5 µs; to 0.1%, VO=10 V step |
| Settling time | 10 µs; to 0.01%, VO=10 V step |
| Common-mode step settling time | 4.5 µs; VCM=10 V step, VDIFF=0 V |
| Quiescent current | 1.5 mA typ, ±2 mA max; CSO: SHE, VIN=0 V |
| Quiescent current | 0.8 mA typ, ±2 mA max; CSO: TID, VIN=0 V |
| Recommended single-supply voltage | 10 V min, 30 V typ, 36 V max; operating free-air temperature range |
| Recommended dual-supply voltage | ±5 V min, ±15 V typ, ±18 V max; operating free-air temperature range |
| Specified operating temperature | -40°C to 85°C; recommended operating condition |
| Absolute maximum dual supply voltage | ±22 V; VS=(V+)-(V-) |
| Absolute maximum continuous signal input voltage | ±200 V; signal input pins |
| Absolute maximum peak signal input voltage | ±500 V; signal input pins, 0.1 s peak |
| Output short-circuit rating | Continuous; short-circuit to VS/2 |
| Storage temperature | -55°C to 125°C; absolute maximum rating |
| Junction temperature | 150°C; absolute maximum rating |
| Lead temperature | 300°C; soldering, 10 s |
| ESD HBM rating | ±1500 V; human-body model per ANSI/ESDA/JEDEC JS-001 |
| ESD CDM rating | ±1000 V; charged-device model per JEDEC JESD22-C101 |
| Thermal resistance junction-to-ambient | 150°C/W; D package, SOIC-8 |
| Thermal resistance junction-to-ambient | 80°C/W; P package, PDIP-8 |
| Transfer function | VO=V3-V2; most applications, unity-gain difference amplifier |
| Complete transfer function | VO=V3-V2+20×V5-19×V1; when voltages are applied to reference terminals pins 1 and 5 |
| Pin 1 function | REFB; reference B input |
| Pin 2 function | -IN; inverting input |
| Pin 3 function | +IN; non-inverting input |
| Pin 4 function | V-; negative power supply |
| Pin 5 function | REFA; reference A input |
| Pin 6 function | Output; amplifier output |
| Pin 7 function | V+; positive power supply |
| Pin 8 function | NC; no internal connection; can be grounded or disconnected |
| Datasheet Status | request_only |
Product Overview
The INA117 is a Texas Instruments Signal_Chain device configured as a high common-mode voltage difference amplifier. It is a precision unity-gain difference amplifier using an integrated precision op amp and thin-film resistor network, with a nominal gain of 1 V/V and the common transfer function VO=V3-V2 for most applications.
Input capability is centered on large common-mode signals: the device supports a ±200 V common-mode input range at VS=±15 V, ±500 V momentary common-mode overload, and ±500 V momentary differential overload. Electrical parameters include ±0.01% typical gain error, ±2 ppm/°C gain error drift, 25 µVpp low-frequency voltage noise, and 550 nV/√Hz voltage noise density at 1 kHz.
Package options include INA117P in an 8-pin DIP P package measuring 6.35 mm x 9.81 mm and INA117KU or INA117KU/2K5 in an 8-pin SOIC D package measuring 3.91 mm x 4.9 mm. Pin functions include differential inputs, reference inputs, supply pins, output, and one no-connect pin that may be grounded or left disconnected.
Key Features
- Precision unity-gain difference amplifier with integrated resistor network
- ±200 V common-mode input range at ±15 V supply
- ±500 V momentary common-mode and differential overload protection
- 1 V/V gain with ±0.01% typical gain error
- 70 dB minimum DC CMRR over -200 V to 200 V
- 25 µVpp voltage noise from 0.1 Hz to 10 Hz
- 200 kHz or 500 kHz bandwidth by CSO condition
- Recommended dual supply from ±5 V to ±18 V
- Specified operation from -40°C to 85°C
- DIP-8 and SOIC-8 package options
Typical Applications
- High common-mode voltage measurement
- Unity-gain differential signal conversion
- Signal-chain common-mode rejection stages
- Reference-offset output level shifting
- Differential input monitoring
- Wide common-mode analog front ends
Procurement Notes
When requesting a quote for INA117, 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 type of amplifier is the INA117?
The INA117 is a high common-mode voltage difference amplifier from Texas Instruments. It functions as a precision unity-gain difference amplifier using an integrated precision op amp and thin-film resistor network.
What common-mode input range does INA117 support?
At VS=±15 V, the INA117 supports a common-mode input range of ±200 V. The datasheet facts also list -200 V minimum and 200 V maximum input common-mode voltage at TA=25°C.
Which package options are listed for INA117?
INA117P is listed in the P package, an 8-pin DIP measuring 6.35 mm x 9.81 mm. INA117KU and INA117KU/2K5 are listed in the D package, an 8-pin SOIC measuring 3.91 mm x 4.9 mm.
What is the INA117 transfer function?
For most unity-gain difference amplifier applications, the transfer function is VO=V3-V2. When voltages are applied to reference terminals pins 1 and 5, the complete function is VO=V3-V2+20×V5-19×V1.
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.