Product Summary
The PGA309AIPWT is a programmable analog signal conditioner designed for bridge sensors. The analog signal path amplifies the sensor signal and provides digital calibration for zero, span, zero drift, span drift, and sensor linearization errors with applied stress (pressure, strain, etc.). The calibration is done via a One-Wire digital serial interface or through a Two-Wire industry-standard connection. The calibration parameters are stored in external nonvolatile memory (typically SOT23-5) to eliminate manual trimming and achieve long-term stability. The applications of the PGA309AIPWT are (1)bridge sensors; (2)remote 4-20mA transmitters; (3)strain, load, and weigh scales; (4)automotive sensors.
Parametrics
PGA309AIPWT absolute maximum ratings: (1)Supply Voltage, VSD, VSD: +7.0V; (2)Input Voltage, VIN1, VIN2: -0.3V to VSA +0.3V; (3)Input Current, VFB, VOUT: ±150mA; (4)Input Current: ±10mA; (5)Output Current Limit: 50mA; (6)Storage Temperature Range: -60 to +150℃; (7)Operating Temperature Range: -55 to +150℃; (8)Junction Temperature: +150℃; (9)Lead Temperature (soldering, 10s): +300℃; (10)ESD Protection (Human Body Model): 4kV.
Features
PGA309AIPWT features: (1)complete bridge sensor conditioner; (2)voltage output: Ratiometric or Absolute; (3)digital cal: No Potentiometers/Sensor Trims; (4)sensor error compensation Span, Offset, and Temperature Drifts; (5)low error, time-stable; (6)sensor linearization circuitry; (7)temperature sense: internal or external; (8)calibration lookup table logic Uses External EEPROM (SOT23-5); (9)over/under-scale limiting; (10)sensor fault detection; (11)+2.7V to +5.5V operation; (12)-40 to +125℃ operation; (13)small TSSOP-16 package.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
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PGA309AIPWT |
Texas Instruments |
Current Sense Amplifiers PGA309 Voltage Out Prog Sensor Cndtner |
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PGA309AIPWTG4 |
Texas Instruments |
Current Sense Amplifiers PGA309 Voltage Out Prog Sensor Cndtner |
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