Overview
The PGA204AU is a low-cost, general-purpose programmable-gain instrumentation amplifier produced by Texas Instruments. It offers excellent accuracy and is part of the PGA204 and PGA205 family. These amplifiers are designed for a wide range of applications, including data acquisition systems, general-purpose analog boards, and medical instrumentation. The PGA204AU is notable for its digitally programmable gain, low offset voltage, and low quiescent current, making it suitable for battery-operated systems.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Gain | 1, 10, 100, 1000 | V/V |
| Offset Voltage | 50µV max | µV |
| Offset Voltage Drift | 0.25µV/°C | µV/°C |
| Input Bias Current | 2nA max | nA |
| Quiescent Current | 5.2mA typ | mA |
| Power Supply Voltage | ±4.5V to ±18V | V |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Type | 16-Pin Plastic DIP, SOL-16 Surface Mount | |
| Safe Input Voltage | ±40V | V |
| Common-Mode Rejection Ratio | 115dB at G=1000 | dB |
Key Features
- Digitally programmable gain: Gains of 1, 10, 100, 1000 V/V selected by two TTL or CMOS-compatible address lines.
- Low offset voltage: 50µV max.
- Low offset voltage drift: 0.25µV/°C.
- Low input bias current: 2nA max.
- Low quiescent current: 5.2mA typ.
- No logic supply required.
- Internal input protection up to ±40V.
- High common-mode rejection ratio: 115dB at G=1000.
- Available in 16-pin plastic DIP and SOL-16 surface-mount packages.
Applications
- Data acquisition systems.
- General-purpose analog boards.
- Medical instrumentation.
Q & A
- What are the programmable gain values of the PGA204AU?
The PGA204AU has programmable gain values of 1, 10, 100, and 1000 V/V.
- What is the maximum offset voltage of the PGA204AU?
The maximum offset voltage is 50µV.
- What is the offset voltage drift of the PGA204AU?
The offset voltage drift is 0.25µV/°C.
- What is the input bias current of the PGA204AU?
The input bias current is 2nA max.
- What is the quiescent current of the PGA204AU?
The quiescent current is 5.2mA typ.
- Does the PGA204AU require a logic supply?
No, the PGA204AU does not require a logic supply.
- What is the safe input voltage range for the PGA204AU?
The safe input voltage range is up to ±40V.
- What are the available package types for the PGA204AU?
The PGA204AU is available in 16-pin plastic DIP and SOL-16 surface-mount packages.
- What is the operating temperature range of the PGA204AU?
The operating temperature range is –40°C to +85°C.
- What are some common applications of the PGA204AU?
Common applications include data acquisition systems, general-purpose analog boards, and medical instrumentation.
