Overview
The PGA207UA-2 is a digitally programmable gain instrumentation amplifier produced by Texas Instruments. It is part of the PGA207 series, which is ideally suited for data acquisition systems, medical and physiological amplifiers, and PC-controlled analog input boards. The PGA207UA-2 features fast settling times, FET inputs, and internal over-voltage protection, making it highly efficient and reliable for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gains | 1, 2, 5, 10 | V/V |
| Input Bias Current | 100 pA max | A |
| Input Protection | ±40 V | V |
| Offset Voltage | 1.5 mV max | mV |
| Bandwidth (–3dB) | 5 MHz (G=1), 1.3 MHz (G=4, 5), 600 kHz (G=8, 10) | MHz / kHz |
| Slew Rate | 25 V/µs | V/µs |
| Settling Time (0.01% for 20V step) | 3.5 µs | µs |
| Supply Voltage Range | ±4.5 to ±18 V | V |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Type | 16-SOIC (0.295", 7.50mm Width) |
Key Features
- Digitally programmable gains: 1, 2, 5, 10 V/V
- Fast settling time: 3.5 µs to 0.01% for a 20V step
- FET inputs with high input impedance and low input bias current (100 pA max)
- Internal over-voltage protection up to ±40V, even with power supplies off
- Low offset voltage and drift, laser-trimmed for precision
- Available in 16-pin plastic DIP and SOL-16 surface-mount packages
- CMOS/TTL-compatible digital inputs for gain selection
- High-speed gain switching time of approximately 500 ns
Applications
- Multiple-channel data acquisition systems
- Medical and physiological amplifiers
- PC-controlled analog input boards
- Multiplexed input signal acquisition systems
- High-impedance sensor interfaces
Q & A
- What are the programmable gain values of the PGA207UA-2?
The PGA207UA-2 has programmable gains of 1, 2, 5, and 10 V/V.
- What is the input bias current of the PGA207UA-2?
The input bias current is 100 pA maximum.
- What is the input protection voltage of the PGA207UA-2?
The inputs are protected up to ±40V.
- What is the settling time of the PGA207UA-2 for a 20V step?
The settling time is 3.5 µs to 0.01% for a 20V step.
- What is the bandwidth of the PGA207UA-2 at different gains?
The bandwidth is 5 MHz at G=1, 1.3 MHz at G=4 and G=5, and 600 kHz at G=8 and G=10.
- What is the slew rate of the PGA207UA-2?
The slew rate is 25 V/µs.
- What is the supply voltage range of the PGA207UA-2?
The supply voltage range is ±4.5 to ±18 V.
- What is the operating temperature range of the PGA207UA-2?
The operating temperature range is –40°C to +85°C.
- In what package types is the PGA207UA-2 available?
The PGA207UA-2 is available in 16-pin plastic DIP and SOL-16 surface-mount packages.
- How are the gains selected in the PGA207UA-2?
The gains are selected using CMOS/TTL-compatible digital inputs.
