Overview
The AD624SD/883B is a high-precision, low-noise instrumentation amplifier produced by Analog Devices Inc. It is designed primarily for use with low-level transducers such as load cells, strain gauges, and pressure transducers. The AD624SD/883B is renowned for its outstanding combination of low noise, high gain accuracy, low gain temperature coefficient, and high linearity, making it ideal for high-resolution data acquisition systems and high-speed applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Gain Range | 1 | - | 1000 | - |
| Gain Error (G = 1) | - | ±0.05% | ±0.1% | - |
| Input Offset Voltage | - | - | 25 µV | - |
| Input Offset Voltage Drift | - | - | 0.25 µV/°C | - |
| CMRR (G = 500) | 130 dB | - | - | - |
| Gain Bandwidth Product | - | - | 25 MHz | - |
| Slew Rate | - | - | 5 V/µs | - |
| Settling Time | - | - | 15 µs | - |
| Operating Temperature Range | -55°C | - | +125°C | - |
| Supply Voltage Range | - | - | ±10 V | - |
Key Features
- Low Noise: 0.2 µV p-p from 0.1 Hz to 10 Hz.
- Low Gain Temperature Coefficient: 5 ppm max at G = 1.
- Low Nonlinearity: 0.001% max at G = 1 to 200.
- High CMRR: Above 80 dB at unity gain, 130 dB at G = 500.
- Pin Programmable Gains: 1, 100, 200, 500, 1000 without external components.
- Internally Compensated: No need for external compensation components.
- Reference and Sense Terminals: For level shifting and minimizing lead-induced errors.
Applications
- High-Resolution Data Acquisition Systems: Ideal for applications requiring precise signal amplification and low noise.
- Low-Level Transducers: Suitable for use with load cells, strain gauges, and pressure transducers.
- High-Speed Data Acquisition: With a 25 MHz gain bandwidth product and 5 V/µs slew rate, it is suitable for high-speed applications.
Q & A
- What is the gain range of the AD624SD/883B?
The gain range of the AD624SD/883B is from 1 to 1000, which can be programmed using internal pins without external components.
- What is the input offset voltage of the AD624SD/883B?
The input offset voltage is typically up to 25 µV).
- What is the CMRR of the AD624SD/883B at G = 500?
The CMRR at G = 500 is above 130 dB).
- What is the gain bandwidth product of the AD624SD/883B?
The gain bandwidth product is 25 MHz).
- What is the slew rate of the AD624SD/883B?
The slew rate is 5 V/µs).
- What is the settling time of the AD624SD/883B?
The settling time is 15 µs).
- What is the operating temperature range of the AD624SD/883B?
The operating temperature range is from -55°C to +125°C).
- Does the AD624SD/883B require external components for gain setting?
No, the AD624SD/883B does not require external components for pre-trimmed gains of 1, 100, 200, 500, and 1000).
- What types of transducers is the AD624SD/883B suitable for?
The AD624SD/883B is suitable for use with low-level transducers such as load cells, strain gauges, and pressure transducers).
- What are the reference and sense terminals used for in the AD624SD/883B?
The reference terminal is used for level shifting at the output, and the sense terminal helps minimize errors induced by long leads).
