Overview
The AD624BD 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 AD624BD offers an outstanding combination of low noise, high gain accuracy, low gain temperature coefficient, and high linearity, making it ideal for high-resolution data acquisition systems.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Gain Range (Pin Programmable) | 1 to 1000 | |
| Gain Error (G = 1) | ±0.05% | |
| Input Offset Voltage | 25 µV (max) | µV |
| Input Offset Voltage Drift | 0.25 µV/°C (max) | µV/°C |
| Common Mode Rejection Ratio (CMRR) | 130 dB (min at G = 500 to 1000) | dB |
| Gain Bandwidth Product | 25 MHz | MHz |
| Slew Rate | 5 V/µs | V/µs |
| Settling Time | 15 µs | µs |
| Supply Voltage Range | ±6 to ±18 V | V |
| Operating Temperature Range | -25°C to +85°C | °C |
| Package Type | 16-Pin SBCDIP |
Key Features
- Low noise performance with 0.2 µV p-p noise in the 0.1 Hz to 10 Hz range.
- High gain accuracy with low gain temperature coefficient of 5 ppm max (G = 1).
- High linearity with a maximum nonlinearity of 0.001% (G = 1 to 200).
- High common-mode rejection ratio (CMRR) of 130 dB min (G = 500 to 1000).
- Pin programmable gains of 1, 100, 200, 500, and 1000 without external components.
- Additional gains can be programmed using external resistors or jumpers.
- Totally independent input and output offset nulling terminals for high precision applications.
- Superior AC performance with a 25 MHz gain bandwidth product and 5 V/µs slew rate.
Applications
The AD624BD is suitable for various high-precision applications, including:
- High-resolution data acquisition systems.
- Load cells and strain gauge applications.
- Pressure transducer interfaces.
- Medical instrumentation.
- Industrial process control systems.
Q & A
- What is the primary application of the AD624BD?
The AD624BD is primarily designed for use with low-level transducers such as load cells, strain gauges, and pressure transducers.
- What are the pin-programmable gain options for the AD624BD?
The AD624BD offers pin-programmable gains of 1, 100, 200, 500, and 1000.
- How can additional gains be achieved with the AD624BD?
Additional gains can be programmed using a single external resistor or external jumpers.
- What is the common-mode rejection ratio (CMRR) of the AD624BD?
The CMRR is 130 dB min at gains of 500 to 1000.
- What is the gain bandwidth product of the AD624BD?
The gain bandwidth product is 25 MHz.
- What is the slew rate of the AD624BD?
The slew rate is 5 V/µs.
- What is the settling time of the AD624BD?
The settling time is 15 µs.
- What is the input offset voltage drift of the AD624BD?
The input offset voltage drift is less than 0.25 µV/°C.
- What is the operating temperature range of the AD624BD?
The operating temperature range is -25°C to +85°C.
- What type of package does the AD624BD come in?
The AD624BD comes in a 16-Pin SBCDIP package.
