Overview
The AD8417WBRMZ-10RL, produced by Analog Devices Inc., is a high voltage, high resolution current sense amplifier designed for precise bidirectional current measurements. This device is particularly suited for applications requiring high common-mode rejection and stability over a wide temperature range. The AD8417 features a unique zero drift architecture, ensuring high accuracy and minimal drift over temperature, making it ideal for various industrial and automotive applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 8-lead MSOP |
| Operating Temperature Range | −40°C to +125°C (AD8417WB and AD8417B), −40°C to +150°C (AD8417WH) |
| Gain | 60 V/V with a maximum ±0.3% gain error over the entire temperature range |
| Common-Mode Rejection Ratio (CMRR) | 86 dB, dc to 10 kHz |
| Input Voltage Range | −3 V to +80 V (common-mode), 5.5 V (differential magnitude) |
| Output Voltage Range | 0.045 VS − 0.035 V (RL = 25 kΩ) |
| Output Resistance | 2 Ω |
| Bandwidth | 250 kHz (−3 dB) |
| Slew Rate | 1 V/µs |
| Noise | 2.3 µV p-p (0.1 Hz to 10 Hz, RTI), 110 nV/√Hz (spectral density at 1 kHz, RTI) |
| Power Supply Operating Range | 2.7 V to 5.5 V |
| Quiescent Current | 4.1 mA (AD8417WB and AD8417B), 4.2 mA (AD8417WH) |
Key Features
- Bidirectional Operation: Capable of measuring current in both directions across a shunt resistor.
- High Common-Mode Rejection: Excellent CMRR of 86 dB from dc to 10 kHz, ensuring accurate measurements in noisy environments.
- Zero Drift Architecture: Minimizes input offset drift to less than 0.4 µV/°C, maintaining high accuracy over temperature.
- Wide Operating Temperature Range: Operates from −40°C to +125°C (AD8417WB and AD8417B) or −40°C to +150°C (AD8417WH).
- AEC-Q100 Qualified: Suitable for automotive applications due to its robust performance and reliability.
- High Bandwidth and Slew Rate: Supports high-speed applications with a bandwidth of 250 kHz and a slew rate of 1 V/µs.
Applications
- High-Side Current Sensing: Ideal for motor controls, solenoid controls, and power management systems.
- Low-Side Current Sensing: Suitable for various industrial and automotive applications requiring precise current measurements.
- Diagnostic Protection: Used in systems that require monitoring and protection against overcurrent conditions.
- Automotive Systems: AEC-Q100 qualified, making it suitable for use in automotive environments.
Q & A
- What is the primary function of the AD8417WBRMZ-10RL?
The AD8417WBRMZ-10RL is a high voltage, high resolution current sense amplifier designed for bidirectional current measurements across a shunt resistor.
- What are the key package options for the AD8417?
The AD8417 is available in 8-lead MSOP, 8-lead SOIC_N, and a 10-lead MSOP pinout option.
- What is the operating temperature range of the AD8417WBRMZ-10RL?
The operating temperature range is −40°C to +125°C for AD8417WB and AD8417B, and −40°C to +150°C for AD8417WH.
- What is the gain of the AD8417?
The AD8417 has an initial gain of 60 V/V with a maximum ±0.3% gain error over the entire temperature range.
- What is the common-mode rejection ratio (CMRR) of the AD8417?
The CMRR is 86 dB from dc to 10 kHz.
- What is the bandwidth of the AD8417?
The bandwidth is 250 kHz (−3 dB).
- Is the AD8417 suitable for automotive applications?
Yes, the AD8417 is AEC-Q100 qualified, making it suitable for automotive applications.
- What is the power supply operating range of the AD8417?
The power supply operating range is 2.7 V to 5.5 V.
- What are some typical applications of the AD8417?
Typical applications include high-side and low-side current sensing in motor controls, solenoid controls, power management, and diagnostic protection.
- How does the AD8417 handle noise and common-mode variations?
The AD8417 features excellent common-mode rejection and uses patented technology to eliminate the negative effects of fast-changing external common-mode variations.
