Overview
The AD22057R-REEL, produced by Analog Devices Inc., is a single-supply difference amplifier designed for amplifying and low-pass filtering small differential voltages. This component is particularly useful in applications where large common-mode voltages are present. It features a precision balanced attenuator, a very low drift preamplifier, and an output buffer amplifier, ensuring accurate amplification and filtering of differential signals without the need for additional active components.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Supply Voltage | 4.5 V to 5.5 V | |
| Input Common-Mode Range | -1 V to +24 V (with +5 V supply) | Extended range due to attenuator network |
| Gain | 40 (default), adjustable with external resistors | Overall gain trimmed to ±0.5% |
| Common-Mode Rejection Ratio (CMRR) | ≥ 80 dB (10,000:1) | |
| Output Voltage Range | 0 V to +4.5 V (with 1 kΩ load, VS = +5 V) | |
| Output Impedance | Low impedance, approximately 100 kΩ through Pin 3 | |
| Temperature Range | -40°C to +85°C | |
| Package Type | Plastic SOIC Package (R-8) |
Key Features
- Precision balanced attenuator to reduce common-mode voltage at the input
- Very low drift preamplifier for accurate amplification of differential signals
- Output buffer amplifier for low impedance output
- Integrated low-pass filtering to minimize spurious RF signals
- High CMRR (≥ 80 dB) for effective common-mode rejection
- ESD protection circuitry to prevent damage from electrostatic discharges
Applications
The AD22057R-REEL is suitable for various applications requiring the amplification and filtering of small differential signals in the presence of large common-mode voltages. These include industrial sensor interfaces, medical devices, automotive systems, and any scenario where precise signal conditioning is necessary.
Q & A
- What is the primary function of the AD22057R-REEL? The AD22057R-REEL is a single-supply difference amplifier designed to amplify and low-pass filter small differential voltages.
- What is the input common-mode range of the AD22057R-REEL? The input common-mode range is -1 V to +24 V when using a +5 V supply.
- How is the gain of the AD22057R-REEL adjusted? The gain can be adjusted using external resistor networks.
- What is the CMRR of the AD22057R-REEL? The CMRR is ≥ 80 dB (10,000:1).
- What is the output voltage range of the AD22057R-REEL? The output voltage range is 0 V to +4.5 V with a 1 kΩ load and VS = +5 V.
- What type of package does the AD22057R-REEL come in? It comes in a Plastic SOIC Package (R-8).
- Does the AD22057R-REEL have ESD protection? Yes, it features proprietary ESD protection circuitry.
- What is the temperature range for the AD22057R-REEL? The temperature range is -40°C to +85°C.
- How does the AD22057R-REEL handle spurious RF signals? It includes small filter capacitors to minimize the effects of spurious RF signals.
- What are some typical applications for the AD22057R-REEL? Typical applications include industrial sensor interfaces, medical devices, and automotive systems.
