Overview
The AD8417WHRMZ is a high voltage, high resolution current sense amplifier produced by Analog Devices Inc. This device is designed to perform bidirectional current measurements across a shunt resistor in various automotive and industrial applications. It features advanced circuitry, including electromagnetic interference (EMI) filters and patented technology to ensure output accuracy even with pulse-width modulation (PWM) type input common-mode voltages. The AD8417WHRMZ is known for its high common-mode input voltage range, low offset voltage, and high common-mode rejection ratio, making it suitable for precise current sensing in demanding environments.
Key Specifications
| Attribute | Value |
|---|---|
| Power Supply Type | Single |
| Typical Single Supply Voltage | 2.7 V to 5.5 V |
| Minimum CMRR | 90 dB |
| Number of Channels per Chip | 1 |
| Output Type | Buffered |
| Mounting Type | Surface Mount |
| Package Type | MSOP |
| Pin Count | 8 |
| Dimensions | 3.2 x 3.2 x 0.95 mm |
| Maximum Operating Supply Voltage | 5.5 V |
| Maximum Operating Temperature | +150 °C |
| Minimum Operating Temperature | -40 °C |
| Minimum Operating Supply Voltage | 2.7 V |
| Input Offset Voltage (Vos) | ±200 µV |
| Input Bias Current | 130 µA |
| Common Mode Rejection Ratio (CMRR) | 86 dB to 100 dB |
| Gain | 60 V/V |
| -3 dB Bandwidth | 250 kHz |
Key Features
- High common-mode input voltage range: −2 V to +70 V continuous, −4 V to +85 V survival.
- Low offset voltage: ±200 µV, with a typical offset drift of 0.1 µV/°C.
- High common-mode rejection ratio (CMRR): 86 dB to 100 dB.
- Initial gain of 60 V/V with a maximum ±0.3% gain error over the entire temperature range.
- Bidirectional operation, enabling current measurements in both directions across a shunt resistor.
- Included electromagnetic interference (EMI) filters and patented circuitry for accurate output with PWM type input common-mode voltages.
- Wide operating temperature range: −40°C to +150°C.
- Qualified for automotive applications and meets AEC-Q100 qualification standards.
Applications
- High-side current sensing in motor controls and solenoid controls.
- Power management systems.
- Low-side current sensing.
- Diagnostic protection and monitoring.
- Automotive and industrial applications requiring precise current measurement and high reliability.
Q & A
- What is the typical supply voltage range for the AD8417WHRMZ?
The typical supply voltage range is from 2.7 V to 5.5 V.
- What is the common-mode input voltage range of the AD8417WHRMZ?
The common-mode input voltage range is −2 V to +70 V continuous, and −4 V to +85 V for survival.
- What is the gain of the AD8417WHRMZ?
The initial gain is 60 V/V with a maximum ±0.3% gain error over the entire temperature range.
- What is the operating temperature range of the AD8417WHRMZ?
The operating temperature range is −40°C to +150°C.
- Is the AD8417WHRMZ qualified for automotive applications?
Yes, it is qualified for automotive applications and meets AEC-Q100 qualification standards.
- What type of packages is the AD8417WHRMZ available in?
The AD8417WHRMZ is available in 8-lead MSOP and 8-lead SOIC packages.
- What is the common-mode rejection ratio (CMRR) of the AD8417WHRMZ?
The CMRR is 86 dB to 100 dB.
- Does the AD8417WHRMZ include EMI filters?
Yes, it includes electromagnetic interference (EMI) filters.
- What is the input offset voltage of the AD8417WHRMZ?
The input offset voltage is ±200 µV.
- What is the bandwidth of the AD8417WHRMZ?
The -3 dB bandwidth is 250 kHz.
