Overview
The AD526BDZ is a single-ended, monolithic software programmable gain amplifier (SPGA) produced by Analog Devices Inc. This component provides gains of 1, 2, 4, 8, and 16, making it highly versatile for various precision instrumentation applications. The AD526BDZ includes an amplifier, resistor network, and TTL-compatible latched inputs, requiring no external components for operation. It is known for its low gain error, low nonlinearity, and excellent DC accuracy, which are crucial for applications demanding programmable gain control.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gains | 1, 2, 4, 8, 16 | - |
| Gain Error (C Grade) | 0.01% (G = 1, 2, 4), 0.02% (G = 8, 16) | % |
| Temperature Drift | 0.5 ppm/°C | ppm/°C |
| Nonlinearity (J Grade) | ±0.005% FSR Max | % |
| Settling Time (10 V Signal Change, Gain = 16) | 0.01% in 4.5 µs | µs |
| Settling Time (Gain Change, Gain = 16) | 0.01% in 5.6 µs | µs |
| Offset Voltage (C Grade) | 0.5 mV Max | mV |
| Offset Voltage Drift (C Grade) | 3 µV/°C | µV/°C |
| Input Bias Current | 50 pA | pA |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | 16-Lead 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: 0.01% in 4.5 µs for 10 V signal change and 0.01% in 5.6 µs for gain change at gain = 16.
- Excellent DC accuracy with a guaranteed maximum input offset voltage of 0.5 mV (C grade) and low offset voltage drift of 3 µV/°C (C grade).
- TTL-compatible digital inputs.
- Force/sense configuration for preserving accuracy with remote or low impedance loads.
- Operates in either latched or transparent mode.
Applications
- Precision instrumentation requiring programmable gain.
- Dynamic range extension for ADC systems.
- Gain ranging preamps with precise gains in binary steps.
- Instrumentation applications such as gain and offset adjustment.
- Automotive and industrial control systems.
- Sensor calibration and signal conditioning.
Q & A
- What are the programmable gains of the AD526BDZ?
The AD526BDZ provides programmable gains of 1, 2, 4, 8, and 16. - What is the gain error of the AD526BDZ?
The gain error is 0.01% for gains 1, 2, and 4, and 0.02% for gains 8 and 16 (C grade). - What is the temperature drift of the AD526BDZ?
The temperature drift is 0.5 ppm/°C. - What is the nonlinearity of the AD526BDZ?
The nonlinearity is ±0.005% FSR Max (J grade). - How fast does the AD526BDZ settle?
The settling time is 0.01% in 4.5 µs for a 10 V signal change and 0.01% in 5.6 µs for a gain change at gain = 16. - What is the input bias current of the AD526BDZ?
The input bias current is 50 pA. - What is the operating temperature range of the AD526BDZ?
The operating temperature range is -40°C to +85°C. - In what package is the AD526BDZ available?
The AD526BDZ is available in a 16-Lead Hermetic Side-Brazed Ceramic DIP package. - Can the AD526BDZ be used in cascade mode?
Yes, two AD526BDZ devices can be cascaded to achieve binary gains from 1 to 256. - What are some common applications of the AD526BDZ?
Common applications include precision instrumentation, dynamic range extension for ADC systems, gain ranging preamps, and sensor calibration.
