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Low-Power, Single-Supply, CMOS Instrumentation Amplifiers (Rev. B)
Texas Instruments
Description
The INA332 and INA2332 are rail-to-rail output, low-power CMOS instrumentation amplifiers that offer wide range, single-supply, and bipolar-supply operation. Using a special manufacturing flow, the INA332 family provides the lowest cost available, while still achieving low-noise amplification of differential signals with low quiescent current of 415µA (dropping to 0.01µA when shutdown). Returning to normal operation within microseconds, this INA can be used for battery or multichannel applications. Configured internally in a gain of 5V/V, the INA332 offers flexibility in higher gains by choosing external resistors. The INA332 rejects line noise and its harmonics because common-mode error remains low even at higher frequencies. High bandwidth and slew rate make the INA332 ideal for directly driving sampling Analog-to-Digital (A/D) converters as well as general-purpose applications. With high precision, low cost, and small packages, the INA332 outperforms discrete designs. Additionally, because they are specified for wide temperature range of –55°C to +125°C and operating range of –65°C to +150°C, the INA331 family can be used in demanding environments.
Features
DESIGNED FOR LOW COST HIGH GAIN ACCURACY: G = 5, 0.07%, 2ppm/°C GAIN SET WITH EXT. RESISTORS FOR >5V/V HIGH CMRR: 73dB DC, 50dB at 45kHz LOW BIAS CURRENT: 0.5pA BANDWIDTH,SLEW RATE: 2.0MHz, 5V/µs RAIL-TO-RAIL OUTPUT SWING: (V+)– 0.02V WIDE TEMPERATURE RANGE: –55°C to +125°C LOW QUIESCENT CURRENT: 490 µA max/chan SHUT DOWN: 0.01 µA MSOP-8 SINGLE AND TSSOP-14 DUAL PACKAGES APPLICATIONS INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermocouple, Position PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG A/D CONVERTER SIGNAL CONDITIONING DIFFERENTIAL LINE RECEIVERS WITH GAIN FIELD UTILITY METERS PCMCIA CARDS AUDIO AMPLIFIERS COMMUNICATION SYSTEMS TEST EQUIPMENT AUTOMOTIVE INSTRUMENTATION All trademarks are the property of their respective owners.
Related Datasheets
| Part Number | Description | Category |
| • INA114 | Precision Instrumentation Amplifier | Actives - Sensors and Transducers |
| • INA118 | Precision, Low Power Instrumentation Amplifier | Actives - Sensors and Transducers |
| • INA122 | Single Supply, MicroPower Instrumentation Amplifier | Actives - Sensors and Transducers |
| • INA128 | Precision, Low Power Instrumentation Amplifiers (Rev. B) | Actives - Sensors and Transducers |
| • INA129 | Precision, Low Power Instrumentation Amplifiers (Rev. B) | Actives - Sensors and Transducers |
| • INA2126 | Micropower Instrumentation Amplifier Single and Dual Versions (Rev. A) | Actives - Sensors and Transducers |
| • INA2322 | microPower Single-Supply CMOS Instrumentation Amplifier (Rev. B) | Actives - Sensors and Transducers |
| • INA2331 | Low-Power, Single-Supply, CMOS Instumentation Amplifiers (Rev. C) | Actives - Sensors and Transducers |
| • INA331 | Low-Power, Single-Supply, CMOS Instumentation Amplifiers (Rev. C) | Actives - Sensors and Transducers |
| • INA332 | Low-Power, Single-Supply, CMOS Instrumentation Amplifiers (Rev. B) | Actives - Sensors and Transducers |
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