Overview
The AD8418AWBRMZ-RL is a high-voltage, high-resolution current shunt amplifier produced by Analog Devices Inc. This device is designed for precise current sensing in various automotive and industrial applications. It features an initial gain of 20 V/V with a maximum ±0.15% gain error over the entire temperature range, ensuring high accuracy in current measurements. The AD8418AWBRMZ-RL is qualified for automotive applications and meets the AEC-Q100 standards, making it reliable for use in demanding environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| GAIN | - | 20 V/V | - | - |
| Gain Error Over Temperature | - | - | ±0.15% | - |
| Voltage Offset, Referred to the Input (RTI) | - | ±200 µV | ±400 µV | - |
| Input Voltage Range (Common Mode) | -2 V | - | 70 V | - |
| Common-Mode Rejection Ratio (CMRR) | 90 dB | 100 dB | - | - |
| Output Voltage Range | 0.032 VS - 0.032 V | - | - | - |
| Output Resistance | - | - | 2 Ω | - |
| Small Signal -3 dB Bandwidth | - | - | 250 kHz | - |
| Slew Rate | - | - | 1 V/µs | - |
| Power Supply Operating Range | 2.7 V | - | 5.5 V | - |
| Quiescent Current | - | - | 4.1 mA | - |
| Operating Temperature Range | -40°C | - | 125°C | - |
Key Features
- High-voltage, high-resolution current shunt amplifier with an initial gain of 20 V/V and a maximum ±0.15% gain error over the entire temperature range.
- Bidirectional current measurements across a shunt resistor.
- High common-mode input voltage range from -2 V to +70 V.
- Excellent common-mode rejection ratio (CMRR) of 90 dB (dc) and 86 dB (dc to 10 kHz).
- Low offset voltage and drift: ±200 µV at 25°C and ±400 µV over the full temperature range.
- EMI filters included for improved noise immunity.
- Wide operating temperature range: -40°C to +125°C.
- AEC-Q100 qualified for automotive applications.
- Available in 8-lead SOIC_N and 8-lead MSOP packages.
Applications
- High-side current sensing in motor controls and solenoid controls.
- Power management and low-side current sensing.
- Diagnostic protection and monitoring in automotive and industrial systems.
Q & A
- What is the initial gain of the AD8418AWBRMZ-RL? The initial gain is 20 V/V.
- What is the maximum gain error over the temperature range? The maximum gain error is ±0.15% over the entire temperature range.
- What is the common-mode input voltage range of the AD8418AWBRMZ-RL? The common-mode input voltage range is from -2 V to +70 V.
- What is the common-mode rejection ratio (CMRR) of the device? The CMRR is 90 dB (dc) and 86 dB (dc to 10 kHz).
- What is the operating temperature range of the AD8418AWBRMZ-RL? The operating temperature range is from -40°C to +125°C.
- Is the AD8418AWBRMZ-RL qualified for automotive applications? Yes, it is AEC-Q100 qualified for automotive applications.
- What are the available packages for the AD8418AWBRMZ-RL? It is available in 8-lead SOIC_N and 8-lead MSOP packages.
- What is the power supply operating range of the device? The power supply operating range is from 2.7 V to 5.5 V.
- What is the quiescent current of the AD8418AWBRMZ-RL? The quiescent current is approximately 4.1 mA.
- Does the AD8418AWBRMZ-RL include EMI filters? Yes, it includes EMI filters for improved noise immunity.
