Overview
The AD624BDZ, produced by Analog Devices Inc., is a high precision, low noise instrumentation amplifier. It is designed primarily for use with low-level transducers such as load cells, strain gauges, and pressure transducers. The AD624 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 | Min | Typ | Max | Units |
|---|---|---|---|---|
| Gain Range (Pin Programmable) | 1 | - | 1000 | - |
| Gain Error (G = 1) | ±0.05% | - | - | % |
| Input Offset Voltage | - | - | 25 µV | µV |
| Input Offset Voltage Drift | - | - | 0.25 µV/°C | µV/°C |
| CMRR (G = 500) | - | - | 130 dB | dB |
| Gain Bandwidth Product | - | - | 25 MHz | MHz |
| Slew Rate | - | - | 5 V/µs | V/µs |
| Settling Time | - | - | 15 µs | µs |
| Operating Temperature Range | -25°C | - | 85°C | °C |
| Supply Voltage Range | ±6V | - | ±18V | V |
Key Features
- Totally independent input and output offset nulling terminals for high precision applications.
- 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 noise performance with input noise typically less than 4 nV/√Hz at 1 kHz.
- High CMRR above 80 dB at unity gain and up to 130 dB at G = 500.
- Low nonlinearity of 0.001% at G = 1.
- Superior ac performance with a 25 MHz gain bandwidth product, 5 V/µs slew rate, and 15 µs settling time.
Applications
The AD624BDZ is ideal for various high precision applications, including:
- High resolution data acquisition systems.
- Load cells and strain gauges.
- Pressure transducers.
- High speed data acquisition applications.
- Instrumentation and measurement systems requiring low noise and high accuracy.
Q & A
- What is the primary application of the AD624BDZ?
The AD624BDZ is primarily designed for use with low-level transducers such as load cells, strain gauges, and pressure transducers. - What are the pin programmable gains of the AD624BDZ?
The AD624BDZ offers pin programmable gains of 1, 100, 200, 500, and 1000. - How can additional gains be achieved with the AD624BDZ?
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. - What is the input offset voltage drift of the AD624BDZ?
The input offset voltage drift of the AD624BDZ is less than 0.25 µV/°C. - What is the CMRR of the AD624BDZ at G = 500?
The CMRR of the AD624BDZ at G = 500 is above 130 dB. - What is the gain bandwidth product of the AD624BDZ?
The gain bandwidth product of the AD624BDZ is 25 MHz. - What is the slew rate of the AD624BDZ?
The slew rate of the AD624BDZ is 5 V/µs. - What is the settling time of the AD624BDZ?
The settling time of the AD624BDZ is 15 µs. - What is the operating temperature range of the AD624BDZ?
The operating temperature range of the AD624BDZ is from -25°C to 85°C. - What is the supply voltage range of the AD624BDZ?
The supply voltage range of the AD624BDZ is ±6V to ±18V.
