Overview
The PGA103U, produced by Texas Instruments, is a programmable-gain amplifier designed for general-purpose applications. This amplifier allows for digitally selected gains of 1, 10, or 100, making it versatile for handling wide dynamic range signals. The PGA103U features CMOS/TTL-compatible inputs and is known for its high-speed circuitry, which provides fast settling times even at the highest gain setting. It operates from ±4.5V to ±18V power supplies and is available in 8-pin plastic DIP and SO-8 surface-mount packages, suitable for a temperature range of –40°C to +85°C.
Key Specifications
| Parameter | Conditions | Min | Max | Units | |
|---|---|---|---|---|---|
| Gain | - | - | 1, 10, 100 | - | V/V |
| Input Offset Voltage, RTI | G = 1, TA = +25°C | ±200 | ±1500 | µV | |
| G = 10, TA = +25°C | ±100 | ±500 | µV | ||
| G = 100, TA = +25°C | ±100 | ±500 | µV | ||
| Offset Voltage Drift vs Temperature | TA = TMIN to TMAX | ±5 (G=1) | ±2 (G=10, G=100) | µV/°C | |
| Quiescent Current | VIN = 0V, VS = ±15V | - | 2.6 | 3.5 | mA |
| Bandwidth, –3dB | G = 1 | - | - | 1.5 MHz | |
| G = 10 | - | - | 750 kHz | ||
| G = 100 | - | - | 250 kHz | ||
| Settling Time, 0.01% | G = 100 | - | - | 8 µs | |
| Operating Temperature Range | - | -40 | - | +85 | °C |
| Power Supply Voltage Range | - | ±4.5 | - | ±18 | V |
Key Features
- Digitally programmable gains: 1, 10, or 100 V/V
- CMOS/TTL-compatible inputs
- Low gain error: ±0.05% max at G=10
- Low offset voltage drift: 2 µV/°C
- Low quiescent current: 2.6 mA
- Low cost and compact packaging: 8-pin plastic DIP and SO-8 surface-mount packages
- Fast settling time: 8 µs to 0.01% at G=100
- High bandwidth: up to 1.5 MHz at G=1
Applications
- Data acquisition systems
- General purpose analog boards
- Medical instrumentation
Q & A
- What are the programmable gain settings of the PGA103U?
The PGA103U has programmable gains of 1, 10, or 100 V/V, selected by two CMOS/TTL-compatible inputs.
- What is the operating temperature range of the PGA103U?
The PGA103U operates within a temperature range of –40°C to +85°C.
- What are the power supply voltage requirements for the PGA103U?
The PGA103U operates from ±4.5V to ±18V power supplies.
- What is the quiescent current of the PGA103U?
The quiescent current of the PGA103U is 2.6 mA.
- What are the typical settling times for the PGA103U?
The settling time for the PGA103U is 8 µs to 0.01% at G=100.
- What are the common applications of the PGA103U?
The PGA103U is commonly used in data acquisition systems, general purpose analog boards, and medical instrumentation.
- What is the bandwidth of the PGA103U at different gain settings?
The bandwidth of the PGA103U is 1.5 MHz at G=1, 750 kHz at G=10, and 250 kHz at G=100.
- What are the package options for the PGA103U?
The PGA103U is available in 8-pin plastic DIP and SO-8 surface-mount packages.
- What is the offset voltage drift of the PGA103U?
The offset voltage drift of the PGA103U is 2 µV/°C.
- How does the PGA103U handle wide dynamic range signals?
The PGA103U is designed to handle wide dynamic range signals with its high-speed circuitry and programmable gains.
