Microchip MCP4725 Bruksanvisning

Microchip Inte kategoriserad MCP4725

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2007-2022 Microchip Technology Inc. and its subsidiaries DS20002039E

MCP4725

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

Block Diagram

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 power-

down 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.

Resistive

Power-on

Reset

Charge

Pump

EEPROM

I2C Interface Logic

Input

DAC Register

Amp

Power-down

Control

VDD

VSS

SCL SDA

VOUT

String DAC

12-Bit Digital-to-Analog Converter with EEPROM Memory

Produktspecifikationer

Varumärke:	Microchip
Kategori:	Inte kategoriserad
Modell:	MCP4725
Färg på produkten:	Roestvrijstaal
Inbyggd display:	Ja
Bredd:	- mm
Djup:	- mm
Höjd:	- mm
Husmaterial:	Roestvrijstaal
Lätt att städa:	Ja
Tillgångar:	150 W
Innehåll behållare/burk:	1.5 l
Integrerad timer:	Ja
Beeldscherm:	LCD
Kijkglas:	Ja
Recept bok:	Ja
AC-ingångsspänning:	220-240 V
AC-ingångsfrekvens:	50 Hz
Förberedelsetid:	25 min
Glass typ:	Ice cream, Sherbet, Yoghurt
Gör fryst yoghurt:	Ja
Att göra sorbet:	Ja
Antal skålar:	- kommen
Inbyggd kylkompressor:	Ja