Overview
The PGA309AIPWR, manufactured by Texas Instruments, is a programmable analog signal conditioner specifically designed for bridge sensors. This device amplifies the sensor signal and provides digital calibration for zero, span, zero drift, span drift, and sensor linearization errors due to applied stress such as pressure or strain. The calibration can be performed via either a One-Wire digital serial interface or a Two-Wire industry-standard connection, with the calibration parameters stored in external nonvolatile memory to ensure long-term stability and eliminate manual trimming.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-TSSOP (0.173", 4.40mm Width) |
| Input Type | Logic |
| Output Type | Voltage |
| Interface | One-Wire, Two-Wire |
| Current - Supply | 1.2mA |
| Operating Temperature | -40°C to 125°C |
| Mounting Type | Surface Mount |
| Max Supply Voltage | 5.5 V |
| Min Supply Voltage | 2.7 V |
| Gain Range | 2.7V/V to 1152V/V |
Key Features
- All-analog signal path with a 2x2 input multiplexer, auto-zero programmable-gain instrumentation amplifier, linearization circuit, voltage reference, internal oscillator, control logic, and an output amplifier.
- Programmable level shifting to compensate for sensor dc offsets.
- Precision, low-drift, no 1/f noise Front-End PGA (Programmable Gain Amplifier).
- Input polarity switching through the input mux to accommodate sensors with unknown polarity output.
- Fault Monitor circuit to detect and signal sensor burnout, overload, and system fault conditions.
Applications
The PGA309AIPWR is primarily used in applications involving bridge sensors, such as those found in pressure, strain, and other types of sensor systems. It is particularly useful in industrial, automotive, and medical devices where precise signal conditioning and calibration are critical. For detailed application information, refer to the PGA309 User's Guide (SBOU024) available on the Texas Instruments website.
Q & A
- What is the PGA309AIPWR used for? The PGA309AIPWR is a programmable analog signal conditioner designed for bridge sensors, amplifying and calibrating sensor signals.
- How is calibration performed on the PGA309AIPWR? Calibration is done via either a One-Wire digital serial interface or a Two-Wire industry-standard connection, with parameters stored in external nonvolatile memory.
- What is the gain range of the PGA309AIPWR? The overall gain of the Front-End PGA + Output Amplifier can be adjusted from 2.7V/V to 1152V/V.
- What type of package does the PGA309AIPWR come in? The PGA309AIPWR comes in a 16-TSSOP package.
- What is the operating temperature range of the PGA309AIPWR? The operating temperature range is -40°C to 125°C.
- Does the PGA309AIPWR have fault detection capabilities? Yes, it includes a Fault Monitor circuit to detect and signal sensor burnout, overload, and system fault conditions.
- How does the PGA309AIPWR handle sensor polarity? The input polarity can be switched through the input mux to accommodate sensors with unknown polarity output.
- What is the supply current of the PGA309AIPWR? The supply current is 1.2mA.
- What are the minimum and maximum supply voltages for the PGA309AIPWR? The minimum supply voltage is 2.7 V, and the maximum supply voltage is 5.5 V.
- Where can I find detailed application information for the PGA309AIPWR? Detailed application information can be found in the PGA309 User's Guide (SBOU024) available on the Texas Instruments website.
