Overview
The PGA117AIPWR, produced by Texas Instruments, is a programmable gain amplifier (PGA) designed for various analog signal processing applications. This device is part of the PGA117 series, which offers a range of features including multiple gain settings, internal calibration channels, and a SPI interface for easy configuration. The PGA117AIPWR is packaged in a 20-pin TSSOP and operates over a wide temperature range of –40°C to 125°C, making it suitable for a variety of environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (AVDD, DVDD) | 2.2 | 5.5 | V | |
| Operating Temperature | –40 | 125 | °C | |
| Input Offset Voltage | ±5 nA (25°C) | nA | ||
| Gain Error | 0.1% (G ≤ 32) | 0.3% (G > 32) | % | |
| Gain Settings (Scope Gains) | 1, 2, 5, 10, 20, 50, 100, 200 | |||
| Number of Analog Inputs | 10 | |||
| Quiescent Current (Analog) | 0.33 | 0.45 | mA | |
| Quiescent Current (Digital) | 0.75 | 1.2 | mA | |
| Shutdown Current | ≤4 μA | μA | ||
| SPI Interface Speed | 10 MHz |
Key Features
- Programmable Gain Settings: The PGA117AIPWR offers scope gains of 1, 2, 5, 10, 20, 50, 100, and 200, allowing for flexible signal amplification.
- Multiple Analog Inputs: This device features 10 analog input channels, making it suitable for applications requiring multiple signal inputs.
- Internal Calibration Channels: The PGA117AIPWR includes four internal calibration channels tied to GND, 0.9 VCAL, 0.1 VCAL, and VREF, facilitating system-level calibration.
- SPI Interface with Daisy-Chain Capability: The device supports a three-pin SPI interface with daisy-chain capability, enabling easy configuration and communication in complex systems.
- Low Noise and High Accuracy: With a low noise figure of 12 nV/√Hz and low gain error, this PGA is optimized for high-precision applications.
- Software and Hardware Shutdown: The device supports both software and hardware shutdown modes, reducing power consumption when not in use.
- Mixed Voltage Systems Support: The PGA117AIPWR can operate with separate analog (AVDD) and digital (DVDD) supply voltages, making it versatile for different system designs.
Applications
- Portable Data Acquisition Systems: The PGA117AIPWR is suitable for portable data acquisition systems due to its low power consumption and high accuracy.
- PC-Based Signal Acquisition Systems: This device is ideal for PC-based signal acquisition systems requiring multiple analog inputs and programmable gain settings.
- Test and Measurement Equipment: The PGA117AIPWR is used in various test and measurement equipment, including handheld test equipment and battery-powered instruments.
- Programmable Logic Controllers (PLCs): It can be integrated into PLCs for industrial automation applications.
- Battery-Powered Instruments: The low power consumption of the PGA117AIPWR makes it suitable for battery-powered instruments.
Q & A
- What is the operating temperature range of the PGA117AIPWR?
The PGA117AIPWR operates over a temperature range of –40°C to 125°C.
- How many analog input channels does the PGA117AIPWR have?
The PGA117AIPWR has 10 analog input channels.
- What are the available gain settings for the PGA117AIPWR?
The PGA117AIPWR offers scope gains of 1, 2, 5, 10, 20, 50, 100, and 200.
- Does the PGA117AIPWR support daisy-chain capability?
Yes, the PGA117AIPWR supports a three-pin SPI interface with daisy-chain capability.
- What is the typical quiescent current for the PGA117AIPWR?
The typical quiescent current for the analog portion is 0.45 mA, and for the digital portion, it is 1.2 mA.
- How does the PGA117AIPWR support system-level calibration?
The PGA117AIPWR includes four internal calibration channels tied to GND, 0.9 VCAL, 0.1 VCAL, and VREF.
- What is the noise figure of the PGA117AIPWR?
The PGA117AIPWR has a low noise figure of 12 nV/√Hz.
- Can the PGA117AIPWR operate with mixed voltage systems?
Yes, the PGA117AIPWR can operate with separate analog (AVDD) and digital (DVDD) supply voltages.
- What are the shutdown current specifications for the PGA117AIPWR?
The shutdown current for the PGA117AIPWR is typically ≤4 μA.
- What is the SPI interface speed of the PGA117AIPWR?
The SPI interface speed of the PGA117AIPWR is up to 10 MHz.
