Description
The MCP4822-E/P from Microchip is a high-precision, dual-channel, 12-bit Digital-to-Analog Converter (DAC) featuring an integrated voltage reference. This device provides a high-accuracy, low-noise solution for applications requiring reliable analog signal generation. With a built-in 2.048V internal reference, the MCP4822 allows users to select a full-scale output range of either 2.048V or 4.096V via a programmable gain selection bit.
Designed for power efficiency, each DAC channel can be independently placed into a shutdown mode, which minimizes power consumption by disabling internal circuitry and setting the output to a high-impedance load (500kΩ typical). Utilizing a resistive string architecture, the MCP4822 offers excellent differential non-linearity (DNL) error, a low temperature coefficient, and a rapid settling time, making it an ideal choice for precision control and signal synthesis in embedded systems.
Key Features
- Dual 12-Bit DAC: Two independent channels with 12-bit resolution.
- Internal VREF: High-precision internal 2.048V voltage reference.
- Versatile Configuration: Selectable 1x or 2x gain for flexible output ranges.
- Fast Performance: 4.5µs settling time and support for SPI interfaces up to 20MHz.
- Power Efficient: Individual channel shutdown mode to conserve energy.
- Rail-to-Rail Output: Maximizes the usable dynamic range of the analog output.
- Robust Design: Operates from 2.7V to 5.5V across a wide industrial temperature range (-40°C to +125°C).
Applications
- Precision Control: Ideal for industrial instrumentation and control loops.
- Signal Synthesis: Generating accurate analog waveforms for test and measurement equipment.
- Sensor Calibration: Providing programmable voltage levels for sensor biasing and calibration.
- Embedded Systems: Versatile analog output for microcontrollers in consumer and industrial hardware.
Package Includes
- 1 x MCP4822-E/P Dual 12-bit Digital to Analog Converter (DIP-8)
Technical Specifications
| Parameter | Specification |
|---|---|
| Device | MCP4822-E/P |
| Resolution | 12-bit |
| Interface | 3-Wire Serial (SPI compatible) |
| Supply Voltage | 2.7V to 5.5V |
| Number of Pins | 8 |
| Operating Temp | -40°C to +125°C |
Note: Product images are shown for illustrative purposes only and may differ from the actual product. For comprehensive technical details, timing diagrams, and register maps, please refer to the official Microchip datasheet.
