Overview
The AD8208WBRZ-R7, produced by Analog Devices Inc., is a single-supply difference amplifier designed to amplify and low-pass filter small differential voltages in the presence of large common-mode voltages. This component is particularly suited for applications requiring robust and precise signal processing, such as in automotive and industrial environments. It operates on a single +5 V supply and offers enhanced input overvoltage and ESD protection, along with integrated EMI filtering.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Common-Mode Voltage Range | −2 V to +45 V | At a single +5 V supply |
| CMRR (Common Mode Rejection Ratio) | 80 dB minimum (dc to 10 kHz) | VCM = −2 V to +45 V |
| Voltage Offset | ±1 mV | VCM = 0 V, TOPR |
| Gain Drift | −5 ppm/°C typical | |
| Input Impedance (Differential) | 360 kΩ to 440 kΩ | |
| Input Impedance (Common Mode) | 180 kΩ to 220 kΩ | |
| System Bandwidth | 70 kHz | VIN = 0.01 V p-p, VOUT = 0.14 V p-p |
| Slew Rate | 1 V/µs | VIN = 0.28 V, VOUT = 4 V step |
| Operating Temperature Range | −40°C to +125°C (WB grade), −40°C to +150°C (WH grade) |
Key Features
- High precision difference amplifier with a CMRR of 80 dB minimum from dc to 10 kHz.
- Single +5 V supply operation with an input common-mode voltage range of −2 V to +45 V.
- Enhanced input overvoltage and ESD protection.
- Integrated EMI filtering for improved noise immunity.
- Low voltage offset and gain drift, ensuring high accuracy over temperature.
- High system bandwidth of 70 kHz and a slew rate of 1 V/µs.
- Qualified for automotive applications with robust temperature ranges.
Applications
- High-side current sensing.
- Motor controls.
- Solenoid controls.
- Power management.
- Low-side current sensing.
- Diagnostic protection.
Q & A
- What is the primary function of the AD8208WBRZ-R7?
The AD8208WBRZ-R7 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 is the input common-mode voltage range of the AD8208WBRZ-R7?
The input common-mode voltage range extends from −2 V to +45 V at a single +5 V supply.
- What is the CMRR of the AD8208WBRZ-R7?
The CMRR is 80 dB minimum from dc to 10 kHz.
- Does the AD8208WBRZ-R7 have built-in EMI filtering?
- What are the operating temperature ranges for the AD8208WBRZ-R7?
The operating temperature ranges are −40°C to +125°C for the WB grade and −40°C to +150°C for the WH grade.
- What is the system bandwidth of the AD8208WBRZ-R7?
The system bandwidth is 70 kHz.
- What is the slew rate of the AD8208WBRZ-R7?
The slew rate is 1 V/µs.
- Is the AD8208WBRZ-R7 qualified for automotive applications?
- What are some typical applications of the AD8208WBRZ-R7?
Typical applications include high-side current sensing, motor controls, solenoid controls, power management, low-side current sensing, and diagnostic protection.
- How does the AD8208WBRZ-R7 protect against input overvoltage and ESD?
The AD8208WBRZ-R7 offers enhanced input overvoltage and ESD protection.
