Overview
The AD526AD, produced by Analog Devices Inc., is a single-ended, monolithic software programmable gain amplifier (SPGA). This device is designed to provide programmable gains of 1, 2, 4, 8, and 16, making it ideal for precision instrumentation applications that require adjustable gain settings.
The AD526AD integrates an amplifier, resistor network, and TTL-compatible latched inputs, eliminating the need for external components. It offers excellent DC precision, low gain error, and low nonlinearity, which are critical for accurate signal processing.
Key Specifications
| Specification | Value |
|---|---|
| Gains | 1, 2, 4, 8, 16 |
| Gain Error | 0.01% Max (G = 1, 2, 4, C Grade), 0.02% Max (G = 8, 16, C Grade) |
| Temperature Drift | 0.5 ppm/°C |
| Nonlinearity | ±0.005% FSR Max (J Grade) |
| Settling Time | 10 V Signal Change: 0.01% in 4.5 µs (Gain = 16), Gain Change: 0.01% in 5.6 µs (Gain = 16) |
| Offset Voltage | 0.5 mV Max (C Grade) |
| Offset Voltage Drift | 3 µV/°C (C Grade) |
| Input Bias Current | 50 pA |
| Small Signal Bandwidth | 350 kHz at a gain of 16 |
| Operating Temperature Range | -40°C to +85°C (Industrial Grades), 0°C to +70°C (Commercial Grade) |
| Package Types | 16-pin plastic DIP, 16-pin hermetic side-brazed ceramic DIP |
Key Features
- Digitally programmable binary gains from 1 to 16
- Two-chip cascade mode achieves binary gain from 1 to 256
- Low gain error and low nonlinearity
- Fast settling time: 10 V signal change in 4.5 µs and gain change in 5.6 µs at gain = 16
- Excellent DC accuracy with low offset voltage and drift
- TTL-compatible digital inputs
- Operation in latched or transparent mode
- Force/sense configuration for accuracy in remote or low impedance loads
Applications
- Precision instrumentation requiring programmable gain
- Signal conditioning in various measurement systems
- Automated test equipment
- Medical devices requiring precise signal amplification
- Industrial control systems
Q & A
- What are the programmable gain settings of the AD526AD?
The AD526AD provides programmable gains of 1, 2, 4, 8, and 16.
- What is the gain error of the AD526AD?
The gain error is 0.01% Max for gains 1, 2, and 4 (C Grade), and 0.02% Max for gains 8 and 16 (C Grade).
- How does the AD526AD handle temperature drift?
The AD526AD has a temperature drift of 0.5 ppm/°C.
- What is the nonlinearity of the AD526AD?
The nonlinearity is ±0.005% FSR Max (J Grade).
- How fast does the AD526AD settle after a gain change?
The settling time is 0.01% in 5.6 µs for a gain change at gain = 16.
- What is the input bias current of the AD526AD?
The input bias current is 50 pA.
- What is the small signal bandwidth of the AD526AD at a gain of 16?
The small signal bandwidth is 350 kHz at a gain of 16.
- In what temperature range does the AD526AD operate?
The AD526AD operates from -40°C to +85°C (Industrial Grades) and 0°C to +70°C (Commercial Grade).
- What are the available package types for the AD526AD?
The AD526AD is available in 16-pin plastic DIP and 16-pin hermetic side-brazed ceramic DIP packages.
- Can the AD526AD be used in cascade mode to achieve higher gains?
Yes, the AD526AD can be used in two-chip cascade mode to achieve binary gains from 1 to 256.
