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General Description

The MCP4725 is a low-power, high accuracy, single

channel, 12-bit buffered voltage output Digital-to-

Analog Converter (DAC) with nonvolatile memory

(EEPROM). Its on-board precision output amplifier

allows it to achieve rail-to-rail analog output swing.

The DAC input and configuration data can be

programmed to the nonvolatile memory (EEPROM) by

the user using I2C interface command. The nonvolatile

memory feature enables the DAC device to hold the

DAC input code during power-off time, and the DAC

output is available immediately after power-up. This

feature is very useful when the DAC device is used as

a supporting device for other devices in the network.

The device includes a Power-on-Reset (POR) circuit to

ensure reliable power-up and an on-board charge

pump for the EEPROM programming voltage. The

DAC reference is driven from VDD directly. In powerdown

mode, the output amplifier can be configured to

present a known low, medium, or high resistance

output load.

The MCP4725 has an external A0 address bit selection

pin. This A0 pin can be tied to VDD or VSS of the user’s

application board.

The MCP4725 has a two-wire I2C compatible serial

interface for standard (100 kHz), fast (400 kHz), or high

speed (3.4 MHz) mode.

The MCP4725 is an ideal DAC device where design

simplicity and small footprint is desired, and for

applications requiring the DAC device settings to be

saved during power-off time.

The device is available in a small 6-pin SOT-23 and DFN package.

Features

? 12-Bit Resolution

? On-Board Nonvolatile Memory (EEPROM)

? ±0.2 LSB DNL (typical)

? External A0 Address Pin

? Normal or Power-Down Mode

? Fast Settling Time: 6 μs (typical)

? External Voltage Reference (VDD)

? Rail-to-Rail Output

? Low Power Consumption

? Single-Supply Operation: 2.7V to 5.5V

? I2C Interface:

- Eight Available Addresses

- Standard (100 kbps), Fast (400 kbps), and

High-Speed (3.4 Mbps) Modes

? Small 6-Lead SOT-23 and DFN Package Options

? Extended Temperature Range: -40°C to +125°C

Applications

? Set Point or Offset Trimming

? Sensor Calibration

? Closed-Loop Servo Control

? Low Power Portable Instrumentation

? PC Peripherals

? Data Acquisition Systems