component

MCP4725

Public Made by Adom

by adom

Microchip 12-bit I2C DAC with EEPROM, SOT-23-6. Buffered voltage output, 2.7-5.5 V. Datasheet-verified.

componentdacdata-converteri2csot-23-6microchip
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Contents

README

markdown

MCP4725

Microchip Technology · 12-bit I2C DAC · SOT-23-6

12-bit single-channel, buffered voltage-output digital-to-analog converter with non-volatile EEPROM and an I2C interface, in a SOT-23-6 package. The EEPROM stores the DAC code and configuration so the output returns to a set value on power-up, no MCU write needed. The rail-to-rail buffered output swings 0 to VDD from a 2.7 to 5.5 V supply, and an address pin plus I2C give multiple devices on a bus. The default way to add a real analog output to an MCU that only has PWM.

Pinout

Pin Name Type Function
1 VOUT output Analog DAC output. Buffered rail-to-rail voltage output from the internal 12-bit resistor-string DAC (0V to VDD). Can drive resistive loads down to 5 kOhm and up to 1000 pF capacitive load; short-circuit current ~15-24 mA (VDD=5V).
2 VSS power_in Ground reference for the device. Analog and digital ground return; all signals are referenced to VSS.
3 VDD power_in Positive supply voltage input, 2.7V to 5.5V (abs max 6.5V). Also serves as the DAC voltage reference (VREF = VDD), so it must be clean and well-decoupled for accurate DAC performance. Typical IDD 210 uA.
4 SDA bidirectional I2C serial data line. Open-drain, requires external pull-up to VDD. Supports Standard (100 kbps), Fast (400 kbps), and High-Speed (3.4 Mbps) modes. VIH >= 0.7VDD, VIL <= 0.3VDD; VOL <= 0.4V at IOL = 3 mA.
5 SCL input I2C serial clock input. Open-drain bus line driven by the I2C master; requires external pull-up to VDD. VIH >= 0.7VDD, VIL <= 0.3VDD.
6 A0 input External I2C address selection bit. Tie to VSS or VDD to select one of two hardwired addresses (combined with the 3 factory-programmed address bits, up to eight MCP4725 devices can share the bus). VIH >= 0.8VDD, VIL <= 0.2VDD; input leakage +/-1 uA.

Key specifications

Parameter Value
Type 12-bit voltage-output DAC
Channels 1 (buffered, rail-to-rail)
Interface I2C (standard / fast / high-speed)
Non-volatile EEPROM (stores code + config)
Output range 0 to VDD
Supply voltage 2.7-5.5 V
Package SOT-23-6
Body (L×W×H) 2.9 × 1.6 × 1.1 mm

Ordering variants

Same part, different packaging or reel option.

  • MCP4725A0T-E/CH (SOT-23-6, tape & reel)

CAD (KiCad official)

  • Symbol: Analog_DAC:MCP4725xxx-xCH
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D)
  • 3D model files: mcp4725-etched.step / mcp4725-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp4725.step / mcp4725.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip Technology datasheet (50 pp, sha256 746d95dfdaaf0a9d, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF