Overview
The AD8202YRMZ-RL, produced by Analog Devices Inc., is a high-performance, single-supply difference amplifier designed for amplifying and low-pass filtering small differential voltages in the presence of large common-mode voltages. This device is particularly suited for automotive applications due to its robust temperature range and high accuracy.
The AD8202 features a two-stage system architecture, allowing for the incorporation of a low-pass filter prior to the output buffer. This architecture enables the user to filter the full-scale signal from the preamp and restore it to full scale using the output buffer amplifier. The device operates over a wide temperature range from -40°C to +125°C, making it ideal for various automotive platforms.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| System Gain | 20 | 20 | 20 | V/V |
| Gain Error | -0.3 | - | +0.3 | % |
| Gain Drift vs. Temperature | 1 | 20 | 30 | ppm/°C |
| Input Offset (RTI) | -1 | - | +1 | mV |
| Input Offset Drift vs. Temperature | -10 | - | +10 | µV/°C |
| Differential Input Impedance | 260 | 325 | 390 | kΩ |
| Common-Mode Voltage Range | -8 | - | +28 | V |
| Supply Voltage Range | 3.5 | - | 12 | V |
| Quiescent Current | 0.25 | 1.0 | - | mA |
| Common-Mode Rejection Ratio (CMRR) | 80 | - | - | dB (dc to 10 kHz) |
| Slew Rate | - | 0.28 | - | V/µs |
| Operating Temperature Range | -40 | - | +125 | °C |
Key Features
- High common-mode voltage range: -8 V to +28 V
- Single-supply operation with a supply voltage range of 3.5 V to 12 V
- Low gain drift: 1 ppm/°C typical
- High common-mode rejection ratio (CMRR): 80 dB minimum from dc to 10 kHz
- Externally accessible 100 kΩ resistor for low-pass filter applications and gain adjustment
- Two-stage system architecture for incorporating a low-pass filter prior to the output buffer
- Low input bias current: 40 nA typical
- High slew rate: 0.28 V/µs
- Surface mount package: 8-MSOP
Applications
- Transmission control systems
- Diesel injection control systems
- Engine management systems
- Adaptive suspension control systems
- Vehicle dynamics control systems
- High-line current sensing applications
Q & A
- What is the primary function of the AD8202YRMZ-RL?
The AD8202YRMZ-RL is a single-supply difference amplifier designed for amplifying and low-pass filtering small differential voltages in the presence of large common-mode voltages.
- What is the operating temperature range of the AD8202YRMZ-RL?
The device operates over a temperature range from -40°C to +125°C.
- What is the common-mode voltage range of the AD8202YRMZ-RL?
The common-mode voltage range is from -8 V to +28 V.
- What is the typical gain drift of the AD8202YRMZ-RL?
The typical gain drift is 1 ppm/°C.
- What is the common-mode rejection ratio (CMRR) of the AD8202YRMZ-RL?
The CMRR is a minimum of 80 dB from dc to 10 kHz.
- How can the gain of the AD8202YRMZ-RL be adjusted?
The gain can be adjusted using the externally accessible 100 kΩ resistor at the output of the preamp A1.
- What is the slew rate of the AD8202YRMZ-RL?
The slew rate is 0.28 V/µs.
- What is the input bias current of the AD8202YRMZ-RL?
The input bias current is typically 40 nA.
- In what package is the AD8202YRMZ-RL available?
The device is available in an 8-MSOP surface mount package.
- What are some typical applications of the AD8202YRMZ-RL?
Typical applications include transmission control, diesel injection control, engine management, adaptive suspension control, and vehicle dynamics control.
- What is the quiescent current of the AD8202YRMZ-RL?
The quiescent current is typically 1.0 mA.
