Overview
The PGA205AUG4, 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 PGA205 is part of the PGA204 and PGA205 series, which are known for their precision and low cost. Gains are digitally selected using two TTL or CMOS-compatible address lines, A0 and A1, allowing for gains of 1, 2, 4, and 8 V/V. The device is available in 16-pin plastic DIP and SOL-16 surface-mount packages and operates over a temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Gain | 1, 2, 4, 8 | - | - | V/V |
| Offset Voltage (RTI) | ±10 + 20/G | ±50 + 100/G | ±25 + 30/G | µV |
| 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 | - | SOIC (DW), 16-pin | - | - |
Key Features
- Digitally programmable gain: 1, 2, 4, 8 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
- 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 options for the PGA205?
The PGA205 offers programmable gains of 1, 2, 4, and 8 V/V.
- What is the maximum offset voltage of the PGA205?
The maximum offset voltage is 50µV.
- What is the offset voltage drift of the PGA205?
The offset voltage drift is 0.25µV/°C.
- What is the input bias current of the PGA205?
The input bias current is 2nA max.
- What is the quiescent current of the PGA205?
The quiescent current is 5.2mA typ.
- Does the PGA205 require a logic supply?
No, the PGA205 does not require a logic supply.
- What is the operating temperature range of the PGA205?
The operating temperature range is -40°C to 85°C.
- What types of packages are available for the PGA205?
The PGA205 is available in 16-pin plastic DIP and SOL-16 surface-mount packages.
- What are some common applications for the PGA205?
Common applications include data acquisition systems, general purpose analog boards, and medical instrumentation.
- How is the gain selected on the PGA205?
The gain is selected using two TTL or CMOS-compatible address lines, A0 and A1.
