Overview
The AD624SD from Analog Devices Inc. is a high precision, low noise instrumentation amplifier designed for use with low-level transducers such as load cells, strain gauges, and pressure transducers. It 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.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Gain Range (Pin Programmable) | 1 to 1000 | - |
| Gain Bandwidth Product | 25 MHz | - |
| Slew Rate | 5 V/µs | - |
| Settling Time | 15 µs | - |
| Input Noise | < 4 nV/√Hz at 1 kHz | - |
| Input Offset Voltage | 25 µV, max | - |
| Input Offset Voltage Drift | < 0.25 µV/°C | - |
| CMRR | 80 dB at unity gain (130 dB at G = 500) | - |
| Nonlinearity | 0.001% max (G = 1 to 200) | - |
| Supply Voltage | ±6 V to ±18 V | - |
| Operating Temperature Range | -55°C to +125°C | - |
| Package | 16-Lead Ceramic DIP | - |
Key Features
- High precision and low noise, making it suitable for high resolution data acquisition systems.
- Pin programmable gains of 1, 100, 200, 500, and 1000 without the need for external components.
- Additional gains such as 250 and 333 can be programmed with external jumpers, and any gain from 1 to 10,000 can be set using a single external resistor.
- Low input offset voltage and drift, ensuring high accuracy.
- High common-mode rejection ratio (CMRR) of up to 130 dB at higher gains.
- Superior AC performance with a 25 MHz gain bandwidth product and a 5 V/µs slew rate.
- Totally independent input and output offset nulling terminals for high precision applications.
Applications
- High resolution data acquisition systems.
- Low-level transducer applications, including load cells, strain gauges, and pressure transducers.
- Industrial automation and control systems.
- Medical instrumentation and diagnostic equipment.
- Test and measurement equipment.
Q & A
- What is the gain range of the AD624SD?
The AD624SD has a gain range of 1 to 1000, which can be set using pin programming or a single external resistor for gains up to 10,000.
- What is the input noise of the AD624SD?
The input noise of the AD624SD is typically less than 4 nV/√Hz at 1 kHz.
- What is the common-mode rejection ratio (CMRR) of the AD624SD?
The CMRR of the AD624SD is above 80 dB at unity gain and up to 130 dB at higher gains (G = 500 to 1000).
- What is the operating temperature range of the AD624SD?
The operating temperature range of the AD624SD is -55°C to +125°C.
- Does the AD624SD require external components for gain setting?
No, the AD624SD does not require external components for pre-trimmed gains of 1, 100, 200, 500, and 1000. However, external components can be used to set other gains.
- What is the slew rate of the AD624SD?
The slew rate of the AD624SD is 5 V/µs.
- What is the settling time of the AD624SD?
The settling time of the AD624SD is 15 µs.
- What is the input offset voltage drift of the AD624SD?
The input offset voltage drift of the AD624SD is less than 0.25 µV/°C.
- What are the typical applications of the AD624SD?
The AD624SD is typically used in high resolution data acquisition systems, low-level transducer applications, industrial automation, medical instrumentation, and test and measurement equipment.
- What is the package type of the AD624SD?
The AD624SD is packaged in a 16-Lead Ceramic DIP.
