MCP4728T-E/UN

Product Overview

Category

The MCP4728T-E/UN belongs to the category of digital-to-analog converters (DACs).

Use

This product is used to convert digital signals into analog voltages. It finds applications in various electronic systems where precise analog voltage outputs are required.

Characteristics

• High resolution: The MCP4728T-E/UN offers a resolution of up to 12 bits, allowing for fine-grained control over the output voltage.
• Multiple channels: It provides four independent DAC channels, enabling simultaneous generation of multiple analog voltages.
• Low power consumption: This device operates at low power levels, making it suitable for battery-powered applications.
• I2C interface: The MCP4728T-E/UN communicates with the host microcontroller using the widely-used I2C protocol.
• Small package size: It comes in a compact package, ensuring space-efficient integration into electronic systems.

Package and Quantity

The MCP4728T-E/UN is available in a small outline IC (SOIC) package. Each package contains one unit of the DAC.

Specifications

• Resolution: Up to 12 bits
• Number of Channels: 4
• Interface: I2C
• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Output Voltage Range: 0V to Vref

Pin Configuration

The MCP4728T-E/UN follows a standard pin configuration:

1. VDD - Power supply voltage
2. VSS - Ground reference
3. SDA - Serial data input/output (I2C)
4. SCL - Serial clock input (I2C)
5. A0 - Address selection bit 0
6. A1 - Address selection bit 1
7. A2 - Address selection bit 2
8. VREF - Reference voltage input
9. VOUT1 - Analog output channel 1
10. VOUT2 - Analog output channel 2
11. VOUT3 - Analog output channel 3
12. VOUT4 - Analog output channel 4

Functional Features

• Programmable output: The MCP4728T-E/UN allows users to set the desired analog output voltage through the I2C interface.
• Power-on reset: Upon power-up, the DAC automatically performs a reset, ensuring a known initial state.
• EEPROM storage: It has an integrated non-volatile memory that can store user-defined voltage settings, even after power loss.
• Fast settling time: The device offers fast settling time, enabling rapid response to changes in the digital input.

Advantages and Disadvantages

Advantages

• High resolution for precise analog voltage generation.
• Multiple channels for simultaneous control of multiple outputs.
• Low power consumption, suitable for battery-powered applications.
• Compact package size for space-efficient integration.

Disadvantages

• Limited output voltage range (0V to Vref).
• Requires an external reference voltage source.

Working Principles

The MCP4728T-E/UN operates by converting digital input values into corresponding analog voltages. The digital data received through the I2C interface is processed internally and converted into analog signals using a digital-to-analog conversion algorithm. The resulting analog voltages are then available at the respective output channels.

Detailed Application Field Plans

The MCP4728T-E/UN finds applications in various fields, including: 1. Industrial automation: Precise analog voltage control for motor speed regulation, valve positioning, and sensor calibration. 2. Audio equipment: Generation of accurate audio signals for amplifiers, mixers, and synthesizers. 3. Test and measurement instruments: Calibration of signal generators, waveform analyzers, and data acquisition systems. 4. Automotive electronics: Control of actuators, sensors, and lighting systems requiring precise analog voltage outputs.

Detailed and Complete Alternative Models

1. MCP4726T-E/UN: A similar DAC with two output channels and a lower resolution of 10 bits.
2. MCP4725T-E/UN: Another alternative with a single output channel and a resolution of 12 bits.
3. MCP4721T-E/UN: A low-cost option with a single output channel and a resolution of 12 bits.

These alternative models provide different channel configurations and resolutions to suit specific application requirements.

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