Overview
The AD526JN, 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. The AD526JN includes an amplifier, a resistor network, and TTL-compatible latched inputs, requiring no external components for operation. It offers excellent DC accuracy, low gain error, and low nonlinearity, which are crucial for applications demanding high precision.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Gains | 1, 2, 4, 8, 16 | Digitally programmable binary gains |
| Gain Error | 0.01% Max (G = 1, 2, 4), 0.02% Max (G = 8, 16) | C Grade |
| Temperature Drift | 0.5 ppm/°C | Over temperature |
| Settling Time | 10 V Signal Change: 0.01% in 4.5 µs (Gain = 16), Gain Change: 0.01% in 5.6 µs (Gain = 16) | |
| Nonlinearity | ±0.005% FSR Max (J Grade) | |
| Offset Voltage | 0.5 mV Max (C Grade) | |
| Offset Voltage Drift | 3 µV/°C (C Grade) | |
| Input Bias Current | 50 pA | FET-input stage |
| Small Signal Bandwidth | 350 kHz at a gain of 16 | |
| Operating Temperature | Commercial: 0°C to +70°C, Industrial: -40°C to +85°C, Military: -55°C to +125°C | Different grades available |
| Package | 16-pin plastic DIP (J Grade), 16-pin hermetic side-brazed ceramic DIP (other grades) |
Key Features
- Digitally programmable binary gains from 1 to 16, with two-chip cascade mode achieving binary gain from 1 to 256
- Low gain error and low nonlinearity, making it ideal for precision instrumentation applications
- Fast settling time: 10 V signal change in 4.5 µs and gain change in 5.6 µs at a gain of 16
- Excellent DC accuracy with a maximum input offset voltage of 0.5 mV and offset voltage drift of 3 µV/°C
- TTL-compatible digital inputs and latched or transparent mode operation
- Force/sense configuration to preserve accuracy with remote or low impedance loads
Applications
- Precision instrumentation applications requiring programmable gain
- Smart Industry and Industrial Automation
- Instrumentation and Measurement Systems
- Digital Health and Medical Devices
- Electrification and Power Management Systems
Q & A
- What are the programmable gains of the AD526JN?
The AD526JN provides programmable gains of 1, 2, 4, 8, and 16.
- What is the gain error of the AD526JN?
The gain error is 0.01% Max for gains 1, 2, 4 and 0.02% Max for gains 8, 16 (C Grade).
- How fast does the AD526JN settle?
The AD526JN settles within 4.5 µs for a 10 V signal change and within 5.6 µs for a gain change at a gain of 16.
- What is the input bias current of the AD526JN?
The input bias current is 50 pA due to the FET-input stage.
- What is the small signal bandwidth of the AD526JN at a gain of 16?
The small signal bandwidth is 350 kHz at a gain of 16.
- What are the operating temperature ranges for the AD526JN?
The operating temperature ranges are 0°C to +70°C for commercial grade, -40°C to +85°C for industrial grades, and -55°C to +125°C for military grade.
- What types of packages are available for the AD526JN?
The AD526JN is available in a 16-pin plastic DIP for the J Grade and a 16-pin hermetic side-brazed ceramic DIP for other grades.
- Can the AD526JN be used in cascade mode?
Yes, the AD526JN can be used in a two-chip cascade mode to achieve binary gains from 1 to 256.
- What is the nonlinearity of the AD526JN?
The nonlinearity is ±0.005% FSR Max (J Grade).
- Does the AD526JN require external components for operation?
No, the AD526JN is a complete SPGA that includes the amplifier, resistor network, and TTL-compatible latched inputs, requiring no external components.
