MCP4725| Datasheet

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MCP4725
12-Bit Digital-to-Analog Converter with EEPROM Memory in SOT-23-6
Features
12-Bit Resolution On-Board Non-Volatile Memory (EEPROM) 0.2 LSB DNL (typical) External A0 Address Pin Normal or Power-Down Mode Fast Settling Time of 6 us (typical) External Voltage Reference (VDD) Rail-to-Rail Output Low Power Consumption Single-Supply Operation: 2.7V to 5.5V I2CTM Interface: - Eight Available Addresses - Standard (100 kbps), Fast (400 kbps), and High-Speed (3.4 Mbps) Modes Small 6-lead SOT-23 Package Extended Temperature Range: -40 C to +125 C

DESCRIPTION
The MCP4725 is a low-power, high accuracy, single channel, 12-bit buffered voltage output Digital-to-Analog Convertor (DAC) with non-volatile 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 non-volatile memory (EEPROM) by the user using I2C interface command. The non-volatile 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 power-down mode, the output amplifier can be configured to present a low, medium, or high resistance output load. The MCP4725 has an external A0 address pin. This A0
pin can be tied to VDD or VSS of the user's application board. The MCP4725 has a two-wire I2CTM compatible serial interface for standard (100 kHz), fast (400 kHz), or high speed (3.4 MHz) mode.
SDA

Applications
Set Point or Offset Trimming Sensor Calibration Closed-Loop Servo Control Low Power Portable Instrumentation PC Peripherals Data Acquisition Systems

Block Diagram
A0 SCL

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 package.

VDD

Power-on Reset Charge Pump

I2C Interface Logic

Input Register DAC Register Resistive String DAC Op Amp

Package Type
SOT-23-6

EEPROM

VOUT
Power-down Control

1 2 3

6 5 4

A0 SCL SDA

VSS VDD

VSS

VOUT

2007 Microchip Technology Inc.

DS22039C-page 1

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MCP4725 DATASHEET