Texas Instruments INA188 Instrumentation Amplifier SOIC-8
Texas Instruments INA188 instrumentation amplifier in SOIC-8 package, with 25µV input offset voltage and 12nV/√Hz noise density.
The Texas Instruments INA188 Instrumentation Amplifier is a surface-mount SOIC-8 device with a 25µV input offset voltage for precise signal measurement.
The INA188 uses proprietary auto-zeroing technology to deliver low offset voltage, low drift over temperature, linearity, and a noise density of 12nV/√Hz that extends down to DC. It provides common-mode rejection greater than 104dB at G≥10, which helps minimise interference from unwanted signals.
Architecture and Supply
The three op-amp architecture features a rail-to-rail output swing and a wide, high-impedance input range. The amplifier supports operation from a single 4V supply up to dual supplies of ±18V, and its gain is set with a single external resistor.
Applications
Suited to universal signal measurement and precise sensor conditioning, including temperature sensing and bridge amplifier circuits. The quiescent current of 1.4mA makes the device suitable for portable and battery-powered equipment.
Key Features
- Precision Performance: 25µV input offset voltage and a maximum drift of 0.2µV/°C.
- Noise and Rejection: Low input noise with common-mode and power supply rejection.
- RFI-Filtered Inputs: Integrated input filtering to help reduce errors caused by radio frequency interference.
- Package and Temperature: Compact surface-mount SOIC-8 package with an operating temperature range from -40°C to 125°C.
- Environmental: Green product containing no antimony or bromine.
Refer to the Additional Information section for dimensions and weight.
- For universal signal measurement
- For precise sensor conditioning
- For temperature sensing circuits
- For bridge amplifier circuits
- Model: INA188
- Package: SOIC-8 surface-mount
- Architecture: Three op-amp
- Output: Rail-to-rail output swing
- Supply Voltage: Single 4V to dual ±18V
- Input Offset Voltage: 25µV
- Maximum Drift: 0.2µV/°C
- Noise Density: 12nV/√Hz
- Common-Mode Rejection: Greater than 104dB (at G≥10)
- Quiescent Current: 1.4mA
- Operating Temperature Range: -40°C to 125°C
- Gain Setting: Single external resistor
- Special Feature: RFI-filtered inputs
- Special Feature: Green product, no antimony or bromine
- Width: 3.3
- Depth: 1.5
- Height: 4.3
- Weight: 5.897 g
Always follow local regulations and product guidance.
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