INA331

低功耗单电源 CMOS 仪表放大器

The and INA2331 are rail-to-rail output, low-power CMOS instrumentation amplifiers that offer wide range, single-supply operation as well as bipolar-supply operation. The INA331 family provides low-cost, low-noise amplification of differential signals with a 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 multi-channel applications.

Configured internally in a gain of 5V/V, the INA331 offers flexibility in higher gains by choosing external resistors.

The INA331 rejects line noise and its harmonics, because common-mode error remains low even at higher frequencies.

High bandwidth and slew rate makes the INA331 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 INA331 outperforms discrete designs. They are specified for a wide temperature range of -55°C to +125°C.

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DESIGNED FOR LOW COST

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HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C

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GAIN SET WITH EXT. RESISTORS FOR >5V/V

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LOW OFFSET VOLTAGE: ±250 µV

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HIGH CMRR: 94dB DC, 50dB at 45kHz

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LOW BIAS CURRENT: 0.5pA

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BANDWIDTH, SLEW RATE: 2.0MHz, 5V/µs

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RAIL-TO-RAIL OUTPUT SWING: V+– 0.02V

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WIDE TEMPERATURE RANGE: –55°C to +125°C

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LOW QUIESCENT CURRENT: 490 µA max/chan

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SHUT DOWN: 0.01 µA

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MSOP-8 SINGLE AND TSSOP-14 DUAL PACKAGES

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APPLICA ONS

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INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermocouple, Position

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PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG

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A/D CONVERTER SIGNAL CONDITIONING

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DIFFERENTIAL LINE RECEIVERS WITH GAIN

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FIELD UTILITY METERS

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PCMCIA CARDS

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AUDIO AMPLIFIERS

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COMMUNICATION SYSTEMS

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TEST EQUIPMENT

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AUTOMOTIVE INSTRUMENTATION

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