Overview
The PGA204BU/1K, produced by Texas Instruments, is a low-cost, general-purpose programmable-gain instrumentation amplifier. It offers excellent accuracy and versatility, making it ideal for a wide range of applications. The PGA204BU/1K is part of the PGA204 series, which includes variants with different gain options. This specific model provides gains of 1, 10, 100, and 1000 V/V, selected by two TTL or CMOS-compatible address lines, A0 and A1. The amplifier is known for its low offset voltage, low offset voltage drift, and high common-mode rejection ratio, making it suitable for precise signal amplification in various environments.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Gain Options | 1, 10, 100, 1000 | - | - | V/V |
| Input Offset Voltage (RTI) | ±10 + 20/G | ±50 + 100/G | ±25 + 30/G | µV |
| Input Offset Voltage Drift | ±0.1 + 0.5/G | ±0.25 + 5/G | ±0.25 + 5/G | µV/°C |
| Input Bias Current | - | 2 | - | nA |
| Quiescent Current | - | 5.2 | - | mA |
| Power Supply Voltage | ±4.5 | ±15 | ±18 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | SOL-16 Surface Mount | - | - |
Key Features
- Digitally programmable gain: Gains of 1, 10, 100, and 1000 V/V for PGA204BU/1K.
- Low offset voltage: Maximum of 50µV.
- Low offset voltage drift: 0.25µV/°C.
- Low input bias current: Maximum of 2nA.
- Low quiescent current: Typical 5.2mA.
- No logic supply required.
- Internal input protection up to ±40V.
- High common-mode rejection ratio: Up to 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 gain options for the PGA204BU/1K? The PGA204BU/1K offers gain options of 1, 10, 100, and 1000 V/V.
- How is the gain selected in the PGA204BU/1K? The gain is selected using two TTL or CMOS-compatible address lines, A0 and A1.
- What is the maximum input offset voltage for the PGA204BU/1K? The maximum input offset voltage is 50µV.
- What is the typical quiescent current of the PGA204BU/1K? The typical quiescent current is 5.2mA.
- What is the operating temperature range for the PGA204BU/1K? The operating temperature range is -40°C to +85°C.
- What type of packages is the PGA204BU/1K available in? The PGA204BU/1K is available in 16-pin plastic DIP and SOL-16 surface-mount packages.
- Does the PGA204BU/1K require a separate logic supply? No, the PGA204BU/1K does not require a separate logic supply.
- What is the common-mode rejection ratio of the PGA204BU/1K at G=1000? The common-mode rejection ratio is up to 115dB at G=1000.
- What is the maximum safe input voltage for the PGA204BU/1K? The maximum safe input voltage is ±40V.
- What are some typical applications of the PGA204BU/1K? Typical applications include data acquisition systems, general-purpose analog boards, and medical instrumentation.
