Overview
The PGA204AU/1KG4, 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 PGA204AU is part of the PGA204 series, which includes digitally selectable gains of 1, 10, 100, and 1000 V/V. This amplifier is designed for precision and low cost, making it suitable for various analog signal processing tasks.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Gain | 1, 10, 100, 1000 | - | - | V/V |
| Input Offset Voltage (RTI) at 25°C | ±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: 1, 10, 100, 1000 V/V
- 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: 115dB at G=1000
- Operates with power supplies as low as ±4.5V
Applications
- Data acquisition systems
- General-purpose analog boards
- Medical instrumentation
- Other precision analog signal processing applications
Q & A
- What are the available gains for the PGA204AU? The PGA204AU offers digitally selectable gains of 1, 10, 100, and 1000 V/V.
- What is the input offset voltage of the PGA204AU? The input offset voltage is 50µV max.
- 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.
- What is the operating temperature range of the PGA204AU? The operating temperature range is -40°C to +85°C.
- What type of package is the PGA204AU available in? The PGA204AU is available in a SOL-16 surface-mount package.
- Does the PGA204AU require a separate logic supply? No, the PGA204AU does not require a separate logic supply.
- What is the common-mode rejection ratio of the PGA204AU at G=1000? The common-mode rejection ratio is 115dB at G=1000.
- What is the maximum safe input voltage for the PGA204AU? The maximum safe input voltage is ±40V.
- How is the gain selected on the PGA204AU? The gain is selected by two TTL or CMOS-compatible address lines, A0 and A1.
