EmbeddedRelated.com
    Parts    MCP4725 DAC Family    MCP4725    MCP4725A3T-E/CH
MCP4725A3T-E/CH

MCHPMCP4725A3T-E/CH

Microchip Technology
Digital to Analog Converters - DAC Sngl 12-B NV DAC w/ I2C interface
3,282 in stock
Datasheet Mouser Compare Prices

Overview

The MCP4725A3T-E/CH is a low-power, single-channel 12-bit buffered voltage output Digital-to-Analog Converter (DAC) with non-volatile memory (EEPROM). This device allows users to store DAC register settings, ensuring the output powers up to a specific known state without microcontroller intervention. It operates on a single supply from 2.7V to 5.5V and uses a standard I2C serial interface.

Why Choose This Part

The integrated EEPROM is a significant advantage, allowing the DAC to retain its configuration and output level across power cycles. Its rail-to-rail buffered output simplifies circuit design by eliminating the need for an external output stage in many applications. Additionally, the extremely low power consumption and high INL/DNL accuracy make it suitable for precision industrial instrumentation.

Applications

Sensor Calibration
Adjusting the gain and offset of analog sensor signals to compensate for manufacturing tolerances.
Set Point Control
Generating precise reference voltages for comparators or feedback loops in power supply and motor control circuits.
Closed-Loop Servo Control
Providing the analog control signal for precision positioning systems where 12-bit resolution is required.
Portable Instrumentation
Utilizing the 0.06 uA typical sleep current and small SOT-23 footprint for battery-powered handheld devices.

Key Specifications

Output Type Voltage - Buffered
Architecture String DAC
INL/DNL (LSB) +/-2, +/-0.2
Mounting Type Surface Mount
Settling Time 6us (Typ)
Data Interface I2C
Number of Bits 12
Package / Case SOT-23-6
Reference Type Supply
Differential Output No
Operating Temperature -40degC ~ 125degC
Supplier Device Package SOT-23-6
Number of D/A Converters 1
Voltage - Supply, Analog 2.7V ~ 5.5V
Voltage - Supply, Digital 2.7V ~ 5.5V

Getting Started

To begin development, connect the VDD and VSS pins to a stable 2.7V to 5.5V supply and pull the SDA and SCL lines to VDD for I2C communication. Use a microcontroller to write to the EEPROM if you require a specific power-on reset (POR) voltage level. Microchip provides the MCP4725 PICtail Plus Daughter Board for rapid prototyping and evaluation of the device performance.

Part of MCP4725 DAC family » MCP4725

MCP4725 Family

Part NumberDifferenceStock
MCP4725A1T-E/CH 1T-E/CH 8,960
Also available as: MCP4725

Also Consider

MCP4725A0T-E/CH MCHPMicrochip Technology - Identical functional specification but with a different I2C slave address (A0), allowing multiple DACs on the same bus.