Overview
The AD8209AWBRMZ-R7 is a single-supply differential amplifier produced by Analog Devices Inc. This component is designed to amplify small differential voltages in the presence of high and rapidly changing common-mode voltages. It features a compact 8-lead Mini Small Outline Package (MSOP) and is qualified for automotive applications, ensuring high reliability and quality.
The device consists of two amplifiers (A1 and A2), a resistor network, and a bias circuit, which together provide a total system gain of up to 14 V/V when the preamplifier and buffer stages are connected. The AD8209AWBRMZ-R7 is RoHS compliant and operates over a wide temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.5 to 5.5 | V |
| Operating Temperature | -40 to +125 | °C |
| Input Offset Voltage | ±2 | mV |
| Input Bias Current | 50 | nA |
| Common Mode Rejection Ratio (CMRR) | 80 to 100 | dB (dc to 10 kHz) |
| Gain of Amplifier A1 | 7 | V/V |
| Gain of Amplifier A2 | 2 | V/V |
| Total System Gain (A1 + A2) | 14 | V/V |
| Slew Rate | 1 | V/μs |
| Bandwidth | 80 kHz | |
| Output Resistance | 97 to 103 kΩ | |
| Package Type | 8-MSOP |
Key Features
- High CMRR: The AD8209AWBRMZ-R7 offers a high common-mode rejection ratio (CMRR) of 80 dB to 100 dB from dc to 10 kHz, ensuring minimal interference from common-mode signals.
- Dual Amplifier Stages: The device includes two amplifiers, A1 and A2, which can be connected to provide a total system gain of up to 14 V/V.
- Precision Resistor Network: The input attenuators (RA, RB, and RC) are precision-trimmed to ensure high accuracy and a balanced resistor network.
- Low-Pass Filter Capability: A low-pass filter can be easily implemented by connecting A1 to A2 and adding a capacitor to ground.
- Automotive Qualified: The AD8209AWBRMZ-R7 is qualified for automotive applications, meeting the quality and reliability requirements for such use cases.
- Compact Package: The component is available in an 8-lead MSOP package, making it suitable for space-constrained designs.
Applications
- Automotive Systems: The AD8209AWBRMZ-R7 is particularly suited for automotive applications due to its high reliability and qualification for such environments.
- Industrial Control Systems: It can be used in industrial control systems where differential signals need to be amplified in the presence of high common-mode voltages.
- Medical Devices: The high CMRR and precision make it suitable for medical devices that require accurate signal amplification.
- Test and Measurement Equipment: It can be used in various test and measurement equipment where differential signal amplification is necessary.
Q & A
- What is the operating temperature range of the AD8209AWBRMZ-R7?
The operating temperature range is -40°C to +125°C.
- What is the typical CMRR of the AD8209AWBRMZ-R7?
The typical CMRR is 80 dB to 100 dB from dc to 10 kHz.
- What is the gain of Amplifier A1 and Amplifier A2?
The gain of Amplifier A1 is 7 V/V, and the gain of Amplifier A2 is 2 V/V.
- How can a low-pass filter be implemented using the AD8209AWBRMZ-R7?
A low-pass filter can be implemented by connecting A1 to A2 and adding a capacitor to ground.
- What is the package type of the AD8209AWBRMZ-R7?
The package type is 8-lead Mini Small Outline Package (MSOP).
- Is the AD8209AWBRMZ-R7 qualified for automotive applications?
- What is the slew rate of the AD8209AWBRMZ-R7?
The slew rate is 1 V/μs.
- What is the bandwidth of the AD8209AWBRMZ-R7?
The bandwidth is 80 kHz.
- What is the input bias current of the AD8209AWBRMZ-R7?
The input bias current is 50 nA.
- Is the AD8209AWBRMZ-R7 RoHS compliant?
