MCP4802T-E/MS

Product Overview

Category

The MCP4802T-E/MS belongs to the category of digital-to-analog converters (DACs).

Use

It is primarily used for converting digital signals into analog voltage outputs.

Characteristics

• High resolution: The MCP4802T-E/MS offers a resolution of 12 bits, allowing for precise analog output.
• Low power consumption: It operates at low power levels, making it suitable for battery-powered applications.
• Small package size: The device comes in a miniature MSOP-8 package, enabling space-saving designs.
• Wide voltage range: It supports a wide voltage supply range from 2.7V to 5.5V, providing flexibility in various applications.

Package and Quantity

The MCP4802T-E/MS is available in an MSOP-8 package. Each package contains one unit of the DAC.

Specifications

• Resolution: 12 bits
• Voltage Supply Range: 2.7V to 5.5V
• Output Voltage Range: 0V to Vref
• Operating Temperature Range: -40°C to +125°C
• Communication Interface: SPI (Serial Peripheral Interface)
• Power Consumption: 200 µA (typical)

Pin Configuration

The MCP4802T-E/MS has eight pins arranged as follows:

┌───┬───┐ │ 1 │ 2 │ ├───┼───┤ │ 3 │ 4 │ ├───┼───┤ │ 5 │ 6 │ ├───┼───┤ │ 7 │ 8 │ └───┴───┘

1. VDD: Power supply voltage
2. VOUT: Analog output voltage
3. CS: Chip select input for SPI communication
4. SCK: Serial clock input for SPI communication
5. SDI: Serial data input for SPI communication
6. LDAC: Load DAC input (used to update the output voltage)
7. GND: Ground reference
8. REF: Reference voltage input

Functional Features

• High accuracy: The MCP4802T-E/MS provides excellent linearity and low integral non-linearity, ensuring accurate analog outputs.
• Fast settling time: It offers a fast settling time of less than 10 µs, enabling rapid response in dynamic applications.
• Power-down mode: The device includes a power-down mode that reduces power consumption when not in use.
• Daisy-chain capability: Multiple MCP4802T-E/MS devices can be daisy-chained together using the SPI interface, simplifying system integration.

Advantages and Disadvantages

Advantages

• High resolution for precise analog output
• Low power consumption, suitable for battery-powered applications
• Small package size for space-saving designs
• Wide voltage supply range for flexibility

Disadvantages

• Limited output voltage range (0V to Vref)

Working Principles

The MCP4802T-E/MS operates by receiving digital input data through the SPI interface. It then converts this digital data into an analog voltage output based on its internal digital-to-analog conversion algorithm. The output voltage is proportional to the digital input value and can be adjusted within the specified voltage range.

Application Field Plans

The MCP4802T-E/MS finds applications in various fields, including: 1. Industrial automation: Used for controlling analog actuators and sensors in industrial processes. 2. Audio equipment: Provides precise analog voltage outputs for audio signal processing and amplification. 3. Instrumentation: Enables accurate control of analog signals in measurement and testing equipment. 4. Communication systems: Used in digital communication systems to convert digital signals into analog for transmission.

Alternative Models

1. MCP4822T-E/MS: Similar to the MCP4802T-E/MS but with a higher resolution of 14 bits.
2. MCP4812T-E/MS: A lower-resolution alternative with 10-bit resolution.
3. MCP4922T-E/MS: Offers dual-channel capability, allowing for simultaneous conversion of two digital inputs into analog outputs.

These alternative models provide options with varying resolutions and features to suit different application requirements.

In conclusion, the MCP4802T-E/MS is a high-resolution digital-to-analog converter that offers accurate analog voltage outputs in a compact package. Its low power consumption and wide voltage range make it suitable for various applications in industries such as automation, audio, instrumentation, and communication systems.