INA2331 Texas instruments

INA2331

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INA2331

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Описание

The INA331 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.

DESIGNED FOR LOW COST
HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C
GAIN SET WITH EXT. RESISTORS FOR >5V/V
LOW OFFSET VOLTAGE: ±250 µV
HIGH CMRR: 94dB 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:
- PHYSIOLOGICAL AMPLIFIERS:
- A/D CONVERTER SIGNAL CONDITIONING
- DIFFERENTIAL LINE RECEIVERS WITH GAIN
- FIELD UTILITY METERS
- PCMCIA CARDS
- AUDIO AMPLIFIERS
- COMMUNICATION SYSTEMS
- TEST EQUIPMENT
- AUTOMOTIVE INSTRUMENTATION

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Number of channels	2
Vs (max) (V)	5.5
Vs (min) (V)	2.5
Input offset (±) (max) (µV)	1000
Voltage gain (min) (V/V)	5
Voltage gain (max) (V/V)	1000
Noise at 1 kHz (typ) (nV√Hz)	46
Features	Cost Optimized, Shutdown
CMRR (min) (dB)	80
Input bias current (±) (max) (nA)	0.01
Iq (typ) (mA)	0.415
Bandwidth at min gain (typ) (MHz)	2
Gain error (±) (max) (%)	0.1
Operating temperature range (°C)	-55 to 125
Rating	Catalog
Type	Resistor
Gain nonlinearity (±) (max) (%)	0.01
Output swing headroom (to negative supply) (typ) (V)	0.025
Output swing headroom (to positive supply) (typ) (V)	-0.025
Input common mode headroom (to negative supply) (typ) (V)	0.55
Input common mode headroom (to positive supply) (typ) (V)	-1.7
Noise at 0.1 Hz to 10 Hz (typ) (µVPP)	7