Overview
The AD8209AWBRMZ is a single-supply difference amplifier produced by Analog Devices Inc. It is designed to amplify and low-pass filter small differential voltages in the presence of large common-mode voltages. This amplifier is particularly suited for automotive applications due to its robust performance and compliance with AEC-Q100 specifications. The AD8209AWBRMZ offers enhanced input overvoltage and ESD protection, along with built-in EMI filtering, making it ideal for high-reliability systems.
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 (at 5 V supply) | V |
| Differential Input Voltage | ±16 V | V |
| Common Mode Rejection Ratio (CMRR) | 80 dB (dc to 10 kHz) | dB |
| Input Offset Voltage | ±1 mV | mV |
| Gain Drift | −5 ppm/°C | ppm/°C |
| Output Voltage Range | 0.075 V to (VS − 0.1 V) for WB grade, 0.1 V to (VS − 0.12 V) for WH grade | V |
| Input Bias Current | 50 nA | nA |
| Output Resistance | 97 to 103 kΩ | kΩ |
| Operating Supply Current | 1.6 mA | mA |
| Slew Rate | 1 V/μs | V/μs |
| Gain Bandwidth Product | 80 kHz | kHz |
Key Features
- Single-supply operation with a supply voltage range of 4.5 V to 5.5 V.
- Externally accessible 100 kΩ resistor for low-pass filtering and gain adjustment.
- Enhanced input overvoltage and ESD protection.
- Built-in EMI filtering for improved noise immunity.
- High CMRR of 80 dB from dc to 10 kHz.
- Low input offset voltage and gain drift.
- Wide operating temperature range: −40°C to +125°C (WB grade), −40°C to +150°C (WH grade).
- Qualified for automotive applications per AEC-Q100 specifications.
Applications
- High-side and low-side current sensing.
- Motor controls and solenoid controls.
- Power management systems.
- Diagnostic protection and monitoring.
- Automotive systems requiring robust and precise amplification of differential signals.
Q & A
- What is the primary function of the AD8209AWBRMZ?
The AD8209AWBRMZ is a single-supply difference amplifier designed to amplify and low-pass filter small differential voltages in the presence of large common-mode voltages.
- What are the key applications of the AD8209AWBRMZ?
The AD8209AWBRMZ is used in high-side and low-side current sensing, motor controls, solenoid controls, power management, and diagnostic protection, particularly in automotive systems.
- What is the operating temperature range of the AD8209AWBRMZ?
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?
The CMRR is 80 dB from dc to 10 kHz.
- Does the AD8209AWBRMZ have built-in EMI filtering?
- What is the input common-mode voltage range of the AD8209AWBRMZ?
The input common-mode voltage range extends from −2 V to +45 V at a single 5 V supply.
- Is the AD8209AWBRMZ qualified for automotive applications?
- What is the slew rate of the AD8209AWBRMZ?
The slew rate is 1 V/μs.
- What is the gain bandwidth product of the AD8209AWBRMZ?
The gain bandwidth product is 80 kHz.
- What is the typical input offset voltage of the AD8209AWBRMZ?
The typical input offset voltage is ±1 mV.
