Overview
The AD8209AWBRMZ-RL is a high-voltage, precision difference amplifier produced by Analog Devices Inc. This device is designed to amplify and low-pass filter small differential voltages in the presence of large common-mode voltages. It is particularly suited for applications requiring high accuracy and reliability, such as in automotive and industrial environments. The AD8209 is qualified per AEC-Q100 specifications, ensuring its suitability for demanding automotive applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.5 to 5.5 | V |
| Operating Temperature Range | −40°C to +125°C (WB grade), −40°C to +150°C (WH grade) | °C |
| Input Common-Mode Voltage Range | −2 V to +45 V | V |
| Gain | 2 V/V or 7 V/V (configurable) | V/V |
| Gain Error | ±0.3% | % |
| Output Voltage Range | 0.075 V_S - 0.1 V (WB), 0.1 V_S - 0.12 V (WH) | V |
| Input Bias Current | 50 nA | nA |
| Output Resistance | 97 to 103 kΩ | kΩ |
| CMRR | 80 dB (minimum, dc to 10 kHz) | dB |
| Package | 8-MSOP |
Key Features
- High common-mode rejection ratio (CMRR) of 80 dB from dc to 10 kHz.
- Wide operating temperature range: −40°C to +125°C (WB grade) and −40°C to +150°C (WH grade).
- Low input bias current of 50 nA.
- Configurable gain settings of 2 V/V or 7 V/V.
- Externally accessible 100 kΩ resistor at the output for easy implementation of low-pass filters.
- Qualified per AEC-Q100 specifications for automotive applications.
- Excellent ac and dc performance with ±1 mV voltage offset and −5 ppm/°C typical gain drift.
Applications
- High-side and low-side current sensing.
- Motor controls and solenoid controls.
- Power management systems.
- Diagnostic and protection circuits.
- Automotive systems requiring high reliability and precision.
Q & A
- What is the primary function of the AD8209AWBRMZ-RL?
The AD8209AWBRMZ-RL is a precision difference amplifier designed to amplify and low-pass filter small differential voltages in the presence of large common-mode voltages.
- What are the supply voltage requirements for the AD8209AWBRMZ-RL?
The device operates with a single supply voltage ranging from 4.5 V to 5.5 V.
- What is the operating temperature range for the AD8209AWBRMZ-RL?
The operating temperature range is −40°C to +125°C for the WB grade and −40°C to +150°C for the WH grade.
- What is the common-mode rejection ratio (CMRR) of the AD8209AWBRMZ-RL?
The CMRR is a minimum of 80 dB from dc to 10 kHz.
- How can the gain of the AD8209AWBRMZ-RL be configured?
The gain can be configured to either 2 V/V or 7 V/V by connecting the appropriate pins.
- What is the input bias current of the AD8209AWBRMZ-RL?
The input bias current is 50 nA.
- What types of applications is the AD8209AWBRMZ-RL suited for?
The device is suited for high-side and low-side current sensing, motor controls, solenoid controls, power management, and diagnostic protection circuits, particularly in automotive and industrial environments.
- Is the AD8209AWBRMZ-RL qualified for automotive applications?
Yes, the AD8209AWBRMZ-RL is qualified per AEC-Q100 specifications for automotive applications.
- How can a low-pass filter be implemented using the AD8209AWBRMZ-RL?
A low-pass filter can be implemented by connecting the A1 and A2 pins and placing a capacitor to ground.
- What is the package type of the AD8209AWBRMZ-RL?
The device is packaged in an 8-MSOP package.
