Overview
The AD526SD is a single-ended, monolithic software programmable gain amplifier (SPGA) produced by Analog Devices Inc. This device is part of the AD526 series and is designed to provide high precision and flexibility in various instrumentation and control applications. The AD526SD includes an amplifier, resistor network, and TTL-compatible latched inputs, requiring no external components for operation.
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) | % |
| Gain Drift Over Temperature | 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 | - |
| Offset Voltage (C Grade) | 0.5 mV Max | mV |
| Offset Voltage Drift (C Grade) | 3 µV/°C | µV/°C |
| Small Signal Bandwidth (Gain = 16) | 350 kHz | kHz |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | 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: 0.01% in 4.5 µs for a 10 V signal change (Gain = 16)
- Excellent DC accuracy: Offset voltage of 0.5 mV Max (C Grade)
- TTL-compatible digital inputs
- Force/sense configuration for accuracy with remote or low impedance loads
- Operates in either latched or transparent mode
Applications
- Precision instrumentation requiring programmable gain
- Gain and offset adjustment in instrumentation
- Automated test equipment
- Medical devices requiring high precision amplification
- Industrial control systems
Q & A
- What are the programmable gain options of the AD526SD?
The AD526SD offers programmable gains of 1, 2, 4, 8, and 16.
- What is the gain error for the AD526SD?
The gain error is 0.01% for gains of 1, 2, and 4, and 0.02% for gains of 8 and 16 (C Grade).
- What is the temperature drift of the gain?
The gain drift over temperature is 0.5 ppm/°C.
- What is the nonlinearity of the AD526SD?
The nonlinearity is ±0.005% FSR Max (J Grade).
- How fast does the AD526SD settle?
The settling time is 0.01% in 4.5 µs for a 10 V signal change (Gain = 16).
- What is the offset voltage of the AD526SD?
The offset voltage is 0.5 mV Max (C Grade).
- What is the operating temperature range of the AD526SD?
The operating temperature range is -40°C to +85°C.
- In what package is the AD526SD available?
The AD526SD is available in a 16-pin hermetic side-brazed ceramic DIP.
- Can the AD526SD be used in cascade mode?
Yes, two AD526SD devices can be used in cascade mode to achieve gains from 1 to 256.
- Is the AD526SD compatible with TTL logic?
Yes, the AD526SD has TTL-compatible digital inputs.
