PGA309AIPWR

The PGA309AIPWR is one member of the PGA309 series.PGA309AIPWR has the following features including (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)temperature sense: internal or external;over/under-scale limiting.

The PGA309 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 of PGA309AIPWR 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 core of the PGA309 is the precision, low-drift, no 1/f noise Front-End PGA (Programmable Gain Amplifier).The overall gain of the Front-End PGA + Output Amplifier can be adjusted from 2.7V/V to 1152V/V. The polarity of the inputs can be switched through the input mux to accommodate sensors with unknown polarity output. The Fault Monitor circuit of PGA309AIPWR detects and signals sensor burnout,overload, and system fault conditions.The PGA309 is a programmable analog signal conditioner designed for resistive bridge sensor applications. PGA309AIPWR is a complete signal conditioner with bridge excitation, initial span and offset adjustment,temperature adjustment of span and offset, internal/external temperature measurement capability, output over-scale and under-scale limiting, fault detection, and digital calibration.

Stresses above these ratings of PGA309AIPWR 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.This integrated circuit of PGA309AIPWR can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the PGA309AIPWR not to meet its published specifications.