Overview
The AD8428ARZ-RL from Analog Devices Inc. is an ultra-low noise instrumentation amplifier designed to accurately measure tiny, high-speed signals. It delivers industry-leading gain accuracy, noise, and bandwidth, making it one of the fastest instrumentation amplifiers available. The AD8428 is optimized for applications requiring high precision and low noise, such as sensor interfaces, medical instrumentation, and patient monitoring.
Key Specifications
| Parameter | Value |
|---|---|
| Fixed Gain | 2000 |
| Input Voltage Noise | 1.5 nV/√Hz |
| Gain Drift | 10 ppm/°C |
| Offset Drift | 1 μV/°C |
| Gain Accuracy | 0.2% |
| CMRR (Common Mode Rejection Ratio) | 130 dB min |
| Bandwidth | 3.5 MHz |
| Slew Rate | 40 V/μs |
| Power Supply Range | ±4 V to ±18 V |
| Package | 8-lead SOIC |
| ESD Protection | >5000 V (HBM) |
| Operating Temperature Range | −40°C to +85°C |
| Maximum Operating Temperature | Up to 125°C |
Key Features
- Ultra-low noise with 1.5 nV/√Hz input voltage noise.
- High accuracy DC performance with gain drift of 10 ppm/°C and offset drift of 1 μV/°C.
- Excellent AC specifications including a bandwidth of 3.5 MHz and a slew rate of 40 V/μs.
- High CMRR of 130 dB min to prevent unwanted signals from corrupting the signal of interest.
- Access to internal nodes between the first and second stages for modifying DC and AC parameters.
- ESD protection greater than 5000 V (HBM).
- Operates over an industrial temperature range of −40°C to +85°C and up to 125°C.
Applications
- Sensor interfaces: Ideal for accurately measuring signals from various sensors.
- Medical instrumentation: Used in patient monitoring and other medical devices requiring high precision and low noise.
- Patient monitoring: Suitable for applications where precise signal measurement is critical.
Q & A
- What is the fixed gain of the AD8428ARZ-RL?
The fixed gain of the AD8428ARZ-RL is 2000.
- What is the input voltage noise of the AD8428ARZ-RL?
The input voltage noise is 1.5 nV/√Hz.
- What is the CMRR of the AD8428ARZ-RL?
The CMRR is 130 dB min.
- What is the bandwidth of the AD8428ARZ-RL?
The bandwidth is 3.5 MHz.
- What is the slew rate of the AD8428ARZ-RL?
The slew rate is 40 V/μs.
- What is the power supply range of the AD8428ARZ-RL?
The power supply range is ±4 V to ±18 V.
- What package type is the AD8428ARZ-RL available in?
The AD8428ARZ-RL is available in an 8-lead SOIC package.
- What is the ESD protection level of the AD8428ARZ-RL?
The ESD protection is greater than 5000 V (HBM).
- What is the operating temperature range of the AD8428ARZ-RL?
The operating temperature range is −40°C to +85°C, and it can operate up to 125°C.
- What are some common applications of the AD8428ARZ-RL?
Common applications include sensor interfaces, medical instrumentation, and patient monitoring.
