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

PGA309AIPWT block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
PGA309AIPWT
PGA309AIPWT

Texas Instruments

Current Sense Amplifiers PGA309 Voltage Out Prog Sensor Cndtner

Data Sheet

0-1: $4.59
1-10: $4.12
10-25: $3.67
25-50: $3.46
PGA309AIPWTG4
PGA309AIPWTG4

Texas Instruments

Current Sense Amplifiers PGA309 Voltage Out Prog Sensor Cndtner

Data Sheet

0-190: $2.48
190-250: $2.43
250-500: $2.38
500-750: $2.33