Overview
The AD8210WYRZ-R7, produced by Analog Devices Inc., is a single-supply, high-side current sense amplifier designed to amplify small differential voltages in the presence of large common-mode voltages. This component is particularly useful in applications requiring accurate current measurement in high-voltage systems. The AD8210 operates over a wide common-mode voltage range from -2 V to +65 V and is available in an 8-lead SOIC package. It is qualified for automotive applications, ensuring high reliability and performance under various environmental conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|
| GAIN Initial | 20 | V/V | 25°C, VO ≥ 0.1 V dc | ||
| GAIN Accuracy | ±0.5 % | 25°C, VO ≥ 0.1 V dc | |||
| GAIN Accuracy Over Temperature | ±0.7 % | TA | |||
| GAIN Drift | 20 ppm/°C | ||||
| VOLTAGE OFFSET Offset Voltage (RTI) | ±1.0 mV | 25°C | |||
| VOLTAGE OFFSET Over Temperature (RTI) | ±1.8 mV | TA | |||
| VOLTAGE OFFSET Offset Drift | ±8.0 µV/°C | ||||
| INPUT Input Impedance Differential | 2 kΩ | ||||
| INPUT Input Impedance Common Mode | 5 MΩ | V common mode > 5 V | |||
| INPUT Common-Mode Input Voltage Range | -2 V | +65 V | |||
| INPUT Differential Input Voltage Range | 250 mV | ||||
| OPERATING TEMPERATURE RANGE | -40°C | +125°C |
Key Features
- High Common-Mode Voltage Range: Operates from -2 V to +65 V, making it suitable for high-voltage systems.
- Adjustable Output Reference: The output reference voltage can be easily adjusted using the VREF1 and VREF2 pins.
- High Accuracy and Stability: Gain accuracy of ±0.5% at 25°C and ±0.7% over temperature, with a gain drift of 20 ppm/°C.
- Low Offset Drift: Offset drift of ±8.0 µV/°C ensures stable performance over temperature.
- High CMRR: Common-mode rejection ratio (CMRR) of 120 dB at dc and 80 dB at 100 kHz.
- Automotive Qualified: Available in models qualified for automotive applications, ensuring reliability and performance in demanding environments.
Applications
- Current Sensing: Ideal for measuring currents in high-side configurations.
- Motor Controls: Used in motor control systems for accurate current measurement.
- Transmission Controls: Applied in transmission control systems in automotive applications.
- Diesel Injection Controls: Utilized in diesel engine management systems.
- Engine Management: Employed in engine management systems for precise current monitoring.
- Suspension and Vehicle Dynamic Controls: Used in advanced vehicle control systems.
- DC-to-DC Converters: Suitable for current sensing in DC-to-DC converter applications.
Q & A
- What is the primary function of the AD8210WYRZ-R7?
The AD8210WYRZ-R7 is a single-supply, high-side current sense amplifier designed to amplify small differential voltages in the presence of large common-mode voltages.
- What is the common-mode voltage range of the AD8210WYRZ-R7?
The AD8210WYRZ-R7 operates over a common-mode voltage range from -2 V to +65 V.
- How is the output reference voltage adjusted in the AD8210WYRZ-R7?
The output reference voltage can be adjusted using the VREF1 and VREF2 pins.
- What is the gain accuracy of the AD8210WYRZ-R7 at 25°C?
The gain accuracy is ±0.5% at 25°C.
- What is the typical CMRR of the AD8210WYRZ-R7 at dc?
The typical CMRR at dc is 120 dB.
- Is the AD8210WYRZ-R7 qualified for automotive applications?
- What is the operating temperature range of the AD8210WYRZ-R7?
The operating temperature range is from -40°C to +125°C.
- What is the typical offset drift of the AD8210WYRZ-R7?
The typical offset drift is ±8.0 µV/°C.
- In what package is the AD8210WYRZ-R7 available?
The AD8210WYRZ-R7 is available in an 8-lead SOIC package.
- What are some common applications of the AD8210WYRZ-R7?
Common applications include current sensing, motor controls, transmission controls, diesel injection controls, engine management, suspension and vehicle dynamic controls, and DC-to-DC converters.
