Overview
The AD8205YRZ-RL is a single-supply difference amplifier produced by Analog Devices Inc. This component is designed to amplify small differential voltages in the presence of large common-mode voltages, making it highly suitable for various industrial and automotive applications. The AD8205 operates from a single supply voltage ranging from 4.5 V to 5.5 V and is available in an 8-lead SOIC package. It is rated for operation over a temperature range of -40°C to +125°C, ensuring robust performance in diverse environments.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| GAIN Initial Accuracy | % | ±1 | ±1 | ±1 |
| GAIN Accuracy Over Temperature | % | ±1.2 | ±1.2 | ±1.2 |
| GAIN vs. Temperature | ppm/°C | ±30 | ±30 | ±30 |
| Offset Voltage (RTI) at 25°C | mV | ±2 | ±2 | ±2 |
| Offset Voltage Over Temperature | mV | ±4.5 | ±4.5 | ±4.5 |
| Offset Drift | µV/°C | 15 | 15 | 15 |
| Differential Input Impedance | kΩ | 400 | 400 | 400 |
| Common Mode Input Impedance | kΩ | 200 | 200 | 200 |
| Common Mode Input Voltage Range | V | -2 to 65 | -2 to 65 | -2 to 65 |
| Differential Input Voltage Range | mV | ±100 | ±100 | ±100 |
| Common Mode Rejection Ratio (CMRR) at 25°C | dB | 78 | 86 | 86 |
| Operating Temperature Range | °C | -40 to +125 | -40 to +125 | -40 to +125 |
| Supply Voltage Range | V | 4.5 to 5.5 | 4.5 to 5.5 | 4.5 to 5.5 |
| Supply Current | mA | 2 | 2 | 2 |
| Slew Rate | V/µs | 0.5 | 0.5 | 0.5 |
| -3dB Bandwidth | kHz | 50 | 50 | 50 |
Key Features
- Single-Supply Operation: The AD8205 operates from a single supply voltage ranging from 4.5 V to 5.5 V, making it versatile for various applications.
- High Common Mode Rejection Ratio (CMRR): The amplifier has a CMRR better than 78 dB from dc to 20 kHz, ensuring excellent rejection of common-mode signals.
- Low Offset and Drift: The device features low offset voltage (±2 mV at 25°C) and low offset drift (15 µV/°C), contributing to high accuracy over temperature.
- Wide Input Range: The input common-mode voltage range extends from -2 V to +65 V, and the differential input voltage range is ±100 mV.
- Automotive Qualified: The AD8205WYRZ and AD8205WHRZ models are qualified for automotive applications, ensuring reliability and quality for such demanding environments.
- Adjustable Output Offset: The output offset can be adjusted from 0.05 V to 4.8 V (V+ = 5 V) for both unipolar and bipolar operation.
Applications
- High-Side Current Sensing: Ideal for motor controls, transmission controls, diesel injection controls, and other high-side current sensing applications.
- Engine Management and Vehicle Dynamics: Used in engine management systems, suspension controls, and vehicle dynamic controls.
- DC-to-DC Converters: Suitable for use in DC-to-DC converter applications where high accuracy and stability are required.
- Industrial and Instrumentation: Applicable in various industrial and instrumentation settings where precise differential voltage amplification is necessary.
Q & A
- What is the operating temperature range of the AD8205YRZ-RL?
The operating temperature range is -40°C to +125°C.
- What is the typical supply voltage for the AD8205YRZ-RL?
The typical single-supply voltage is 5 V, with a range of 4.5 V to 5.5 V.
- What is the common-mode rejection ratio (CMRR) of the AD8205YRZ-RL?
The CMRR is better than 78 dB from dc to 20 kHz.
- What is the input impedance of the AD8205YRZ-RL?
The differential input impedance is 400 kΩ, and the common-mode input impedance is 200 kΩ.
- Can the AD8205YRZ-RL be used in automotive applications?
Yes, the AD8205WYRZ and AD8205WHRZ models are qualified for automotive applications.
- What is the slew rate of the AD8205YRZ-RL?
The slew rate is 0.5 V/µs.
- What is the -3dB bandwidth of the AD8205YRZ-RL?
The -3dB bandwidth is 50 kHz.
- How can the output offset be adjusted in the AD8205YRZ-RL?
The output offset can be adjusted from 0.05 V to 4.8 V (V+ = 5 V) for both unipolar and bipolar operation.
- What is the input voltage range for the AD8205YRZ-RL?
The common-mode input voltage range is -2 V to +65 V, and the differential input voltage range is ±100 mV.
- Is the AD8205YRZ-RL RoHS compliant?
Yes, the AD8205YRZ-RL is RoHS compliant.
