Overview
The PGA281AIPWR, produced by Texas Instruments, is a high-precision, zero-drift, high-voltage programmable gain instrumentation amplifier. This device is designed to offer excellent DC precision and long-term stability, utilizing modern chopper technology with internal filters to minimize chopper-related noise. The PGA281AIPWR is optimized for a wide range of applications requiring high-precision signal measurement and conditioning.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VSP - VSN) | 10 (±5) | 36 (±18) | V | |
| Operating Temperature | -40 | 105 | °C | |
| Input Voltage Range | -15.5 | +15.5 | V | |
| Offset Voltage | ±(5 + 45/G) | ±(20 + 235/G) | μV | |
| Gain Drift | 0.5 | ppm/°C | ||
| Common-Mode Rejection Ratio (CMRR) | 110 | 130 | dB | |
| Input Impedance | >1 GΩ | |||
| Package | TSSOP-16 |
Key Features
- Wide Input Range: ±15.5 V at ±18 V supply
- Binary Gain Steps: 128 V/V to ⅛ V/V
- Additional Scaling Factor: 1 V/V and 1⅜ V/V
- Low Offset Voltage: 5 μV at G = 128
- Near-Zero Long-Term Drift of Offset Voltage: Excellent stability over time
- Near-Zero Gain Drift: 0.5 ppm/°C
- Excellent Linearity: 1.5 ppm
- High Input Impedance: >1 GΩ
- Very Low 1/f Noise: Minimized chopper-related noise
- Differential Signal Output: Fully differential, rail-to-rail output
- Overload Detection: Error flag output for overload conditions
Applications
- High-Precision Signal Instrumentation: Ideal for precise measurement and signal conditioning
- Multiplexed Data Acquisition: Suitable for multi-channel data acquisition systems
- Medical Instrumentation: Used in medical devices requiring high precision and stability
- Test and Measurement Equipment: Employed in various test and measurement instruments
- Differential or Single-Ended ADC Drivers: Interfaces well with analog-to-digital converters
- Strain Gauge Amplifiers: Used in strain gauge applications for precise measurement
- Industrial Process Control: Applied in industrial control systems for accurate signal processing
Q & A
- What is the PGA281AIPWR's input voltage range?
The input voltage range is ±15.5 V at ±18 V supply.
- What are the binary gain steps available on the PGA281AIPWR?
The gain steps range from 128 V/V to ⅛ V/V.
- What is the typical offset voltage of the PGA281AIPWR?
The typical offset voltage is 5 μV at a gain of 128 V/V.
- How does the PGA281AIPWR handle common-mode rejection?
The device offers a common-mode rejection ratio (CMRR) of greater than 110 dB.
- What is the input impedance of the PGA281AIPWR?
The input impedance is greater than 1 GΩ.
- Does the PGA281AIPWR have overload detection?
- What is the operating temperature range of the PGA281AIPWR?
The operating temperature range is -40°C to 105°C.
- In what package is the PGA281AIPWR available?
The device is available in a TSSOP-16 package.
- What are some common applications of the PGA281AIPWR?
It is used in high-precision signal instrumentation, medical instrumentation, test and measurement equipment, and industrial process control, among others.
- How does the PGA281AIPWR minimize noise?
The device uses modern chopper technology with internal filters to minimize chopper-related noise.
