Overview
The AD8207WBRZ-R7, produced by Analog Devices Inc., is a zero-drift, high voltage, bidirectional difference amplifier. This component is designed to provide excellent DC performance over temperature, making it ideal for applications requiring high precision and reliability. The AD8207 is particularly suited for bidirectional current sensing and offers robust performance in environments with fast-changing common-mode voltages, such as in solenoid or motor control systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| GAIN Initial | 20 | V/V | |||
| GAIN Accuracy over Temperature | -0.3 | +0.3 | % | TOPR | |
| GAIN Drift | -15 | 0 | ppm/°C | TOPR | |
| VOLTAGE OFFSET | ±100 μV | ±400 μV | 25°C, Over Temperature (RTI) | ||
| OFFSET DRIFT | -1 | +1 μV/°C | TOPR | ||
| INPUT IMPEDANCE | 240 kΩ | Differential | |||
| INPUT IMPEDANCE | 126 kΩ | Common Mode | |||
| INPUT VOLTAGE RANGE | -4 V | +65 V | Common mode, continuous, V+ = 5 V, TOPR | ||
| INPUT VOLTAGE RANGE | -4 V | +35 V | Common mode continuous, V+ = 3.3 V, TOPR | ||
| COMMON-MODE REJECTION (CMRR) | 80 dB | 90 dB | TOPR, f = dc to 20 kHz | ||
| OUTPUT VOLTAGE RANGE | 0.02 V+ | - 0.05 V | |||
| TEMPERATURE RANGE | -40 °C | +125 °C | For Specified Performance |
Key Features
- Ideal for current shunt applications and bidirectional current sensing.
- Includes EMI filters for improved noise rejection.
- Zero-drift architecture with an input offset drift of less than 500 nV/°C.
- High common-mode voltage range: -4 V to +65 V (with 5 V supply) and -4 V to +35 V (with 3.3 V supply).
- Gain of 20 V/V with excellent gain accuracy and drift performance.
- Two reference pins (VREF1 and VREF2) allow for adjustable output offset within the supply range.
- Robust performance in rejecting PWM common-mode voltages.
- Available in an 8-lead SOIC package.
- Qualified for automotive applications with controlled manufacturing for quality and reliability.
Applications
- Bidirectional current sensing in various industrial and automotive systems.
- Solenoid and motor control applications requiring high precision and robust performance.
- High-voltage measurement and monitoring systems.
- Automotive systems, including those requiring adherence to strict quality and reliability standards.
Q & A
- What is the primary application of the AD8207WBRZ-R7?
The AD8207WBRZ-R7 is primarily used for bidirectional current sensing and high-voltage measurement applications, especially in industrial and automotive systems.
- What is the input offset drift of the AD8207WBRZ-R7?
The input offset drift of the AD8207WBRZ-R7 is typically less than 500 nV/°C.
- What is the common-mode voltage range of the AD8207WBRZ-R7?
The common-mode voltage range is -4 V to +65 V with a 5 V supply and -4 V to +35 V with a 3.3 V supply.
- How can the output offset of the AD8207WBRZ-R7 be adjusted?
The output offset can be adjusted using the two reference pins (VREF1 and VREF2) by applying an external low impedance voltage.
- Is the AD8207WBRZ-R7 suitable for automotive applications?
- What is the gain of the AD8207WBRZ-R7?
The gain of the AD8207WBRZ-R7 is 20 V/V.
- What is the temperature range for specified performance of the AD8207WBRZ-R7?
The temperature range for specified performance is -40 °C to +125 °C.
- Does the AD8207WBRZ-R7 include EMI filters?
- What package type is the AD8207WBRZ-R7 available in?
The AD8207WBRZ-R7 is available in an 8-lead SOIC package.
- How does the AD8207WBRZ-R7 handle PWM common-mode voltages?
The AD8207WBRZ-R7 is designed to reject PWM common-mode voltages, ensuring robust performance in applications with fast-changing common-mode inputs.
