Features: ` LOW COST
` LOW QUIESCENT CURRENT: 40A/channel Shut Down: < 1A
` HIGH GAIN ACCURACY: G = 5, 0.07%, 2ppm/
` GAIN SET WITH EXTERNAL RESISTORS
` LOW BIAS CURRENT: 10pA
` BANDWIDTH: 500kHz, G = 5V/V
` RAIL-TO-RAIL OUTPUT SWING: (V+) 0.02V
` WIDE TEMPERATURE RANGE: 55 to +125
` SINGLE VERSION IN MSOP-8 PACKAGE AND DUAL VERSION IN TSSOP-14 PACKAGEApplication· INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermistor, Position
· PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG
· A/D CONVERTER SIGNAL CONDITIONING
· DIFFERENTIAL LINE RECEIVERS WITH GAIN
· FIELD UTILITY METERS
· PCMCIA CARDS
· COMMUNICATION SYSTEMS
· TEST EQUIPMENT
· AUTOMOTIVE INSTRUMENTATIONPinout
SpecificationsSupply Voltage, V+ to V ................................................................... 7.5V
Signal Input Terminals, Voltage(2) .................. (V) 0.5V to (V+) + 0.5V
Current(2) .................................................... 10mA
Output Short-Circuit(3) ............................................................ Continuous
Operating Temperature ................................................... 65 to +150
Storage Temperature ...................................................... 65 to +150
Junction Temperature ..................................................................... +150
Lead Temperature (soldering, 10s) ................................................ +300
NOTE: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied. (2) Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5V beyond the supply rails should be current limited to 10mA or less. (3) Short-circuit to ground one amplifier per package.
DescriptionThe INA322 family is a series of low cost, rail-to-rail output, micropower CMOS instrumentation amplifiers that offer wide-range, single-supply, as well as bipolarsupply operation. The INA322 family provides lowcost, low-noise amplification of differential signals with micropower current consumption of 40A. When shutdown the INA322 has a quiescent current of less than 1A. Returning to normal operations within nanoseconds, the shutdown feature makes the INA322 optimal for low-power battery or multiplexing applications.
Configured internally for 5V/V gain, the INA322 offers exceptional flexibility with user-programmable external gain resistors. The INA322 reduces common-mode error over frequency and with CMRR remaining high up to 3kHz, line noise and line harmonics are rejected.
The low-power design does not compromise on bandwidth or slew rate, making the INA322 ideal for driving sampling Analog-to-Digital (A/D) converters as well as general-purpose applications. With high precision, lowost, and small packaging, the INA322 outperforms discrete designs, while offering reliability and performance.
INA322 Data Sheet
