MCP4902T-E/P MICROCHIP [Microchip Technology], MCP4902T-E/P Datasheet

MCP4902T-E/P

Manufacturer Part Number

MCP4902T-E/P

Description

8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with SPI Interface

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.MCP4902T-EP.pdf (48 pages)

Current page: 1 of 48
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8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter

Features

• MCP4902: Dual 8-Bit Voltage Output DAC

• MCP4912: Dual 10-Bit Voltage Output DAC

• MCP4922: Dual 12-Bit Voltage Output DAC

• Rail-to-Rail Output

• SPI Interface with 20 MHz Clock Support

• Simultaneous Latching of the Dual DACs

• Fast Settling Time of 4.5 µs

• Selectable Unity or 2x Gain Output

• External Voltage Reference Inputs

• External Multiplier Mode

• 2.7V to 5.5V Single-Supply Operation

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

Applications

• Set Point or Offset Trimming

• Precision Selectable Voltage Reference

• Motor Control Feedback Loop

• Digitally-Controlled Multiplier/Divider

• Calibration of Optical Communication Devices

Related Products

 2010 Microchip Technology Inc.

MCP4801

MCP4811

MCP4821

MCP4802

MCP4812

MCP4822

MCP4901

MCP4911

MCP4921

MCP4902

MCP4912

MCP4922

with LDAC pin

Note 1: The products listed here have similar AC/

P/N

DC performances.

Resolution

DAC

(1)

ChannelS

No. of

MCP4902/4912/4922

Reference

with SPI Interface

(2.048V)

External

Voltage

Internal

REF

)

Description

The MCP4902/4912/4922 devices are dual 8-bit,

10-bit,

Digital-to-Analog Converters (DACs), respectively. The

devices operate from a single 2.7V to 5.5V supply with

SPI compatible Serial Peripheral Interface. The user

can configure the full-scale range of the device to be

bit (gain of 1 of 2).

The user can shut down both DAC channels by using

SHDN pin or shut down the DAC channel individually

by setting the Configuration register bits. In Shutdown

mode, most of the internal circuits in the shutdown

channel are turned off for power savings and the output

amplifier is configured to present a known high

resistance output load (500 ktypical.

The

allowing synchronous updates of two DAC outputs,

using the LDAC pin. These devices also incorporate a

Power-on Reset (POR) circuit to ensure reliable power-

up.

The devices utilize a resistive string architecture, with

its inherent advantages of low DNL error and fast

settling time. These devices are specified over the

extended temperature range (+125°C).

The devices provide high accuracy and low noise

performance for consumer and industrial applications

where calibration or compensation of signals (such as

temperature, pressure and humidity) are required.

The MCP4902/4912/4922 devices are available in the

PDIP, SOIC and TSSOP packages.

Package Types

REF

or 2 * V

devices

and

14-Pin PDIP, SOIC, TSSOP

MCP4912: 10-bit dual DAC

REF

MCP4902: 8-bit dual DAC

MCP4922: 12-bit dual DAC

SCK

SDI

12-bit

include

by setting the Gain Selection Option

buffered

double-buffered

SHDN

LDAC

OUTA

REFA

REFB

OUTB

voltage

DS22250A-page 1

registers,

output

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