MCP4802 datasheet(1/46 Pages) MICROCHIP

部件名	MCP4802

功能描述	8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Interface

PDF	46 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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1 / 46 page

 2010 Microchip Technology Inc.

DS22249A-page 1

MCP4802/4812/4822

Features

• MCP4802: Dual 8-Bit Voltage Output DAC

• MCP4812: Dual 10-Bit Voltage Output DAC

• MCP4822: Dual 12-Bit Voltage Output DAC

• Rail-to-Rail Output

• SPI Interface with 20 MHz Clock Support

• Simultaneous Latching of the Dual DACs

with LDAC pin

• Fast Settling Time of 4.5 µs

• Selectable Unity or 2x Gain Output

• 2.048V Internal Voltage Reference

•50 ppm/°C VREF Temperature Coefficient

• 2.7V to 5.5V Single-Supply Operation

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

Applications

• Set Point or Offset Trimming

• Sensor Calibration

• Precision Selectable Voltage Reference

• Portable Instrumentation (Battery-Powered)

• Calibration of Optical Communication Devices

Description

The MCP4802/4812/4822 devices are dual 8-bit, 10-bit

and 12-bit buffered voltage output 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 devices have a high precision internal voltage

reference (VREF = 2.048V). The user can configure the

full-scale range of the device to be 2.048V or 4.096V by

setting the Gain Selection Option bit (gain of 1 of 2).

Each DAC channel can be operated in Active or

Shutdown mode 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

devices

include

double-buffered

registers,

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, low ratio

metric temperature coefficient 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 MCP4802/4812/4822 devices are available in the

PDIP, SOIC and MSOP packages.

Package Types

类似零件编号 - MCP4802

制造商	部件名	数据表	功能描述
Microchip Technology	MCP4802	1Mb / 50P	SPI Interface with 20 MHz Clock Support 01/27/15
Microchip Technology	MCP4802	1Mb / 50P	SPI Interface with 20 MHz Clock Support 01/27/15

More results

类似说明 - MCP4802

制造商	部件名	数据表	功能描述
Microchip Technology	MCP4821	1Mb / 36P	12-Bit DACs with Internal VREF and SPI??Interface 2005
	MCP4801	1Mb / 48P	8/10/12-Bit Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Interface 2010
	MCP4901	3Mb / 50P	8/10/12-Bit Voltage Output Digital-to-Analog Converter with SPI Interface 2010
	MCP4902	3Mb / 48P	8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with SPI Interface 2010
	MCP4706	15Mb / 86P	8-/10-/12-Bit Voltage Output Digital-to-Analog Converter with EEPROM and I2C Interface 2011
	MCP4822E-SN	1Mb / 46P	8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Interface 01/05/10
	MCP4726A2T-E	16Mb / 86P	8-/10-/12-Bit Voltage Output Digital-to-Analog Converter 11/29/11
Texas Instruments	DAC6571EVM	732Kb / 25P	INTERFACE, VOLTAGE OUTPUT, 10-BIT DIGITAL-TO-ANALOG CONVERTER
Microchip Technology	MCP48FEBXX	1Mb / 92P	8-/10-/12-Bit Single/Dual Voltage Output Nonvolatile Digital-to-Analog Converters with SPI Interface 07/14/15
Microchip Technology	MCP48FVBXX	1Mb / 84P	8-/10-/12-Bit Single/Dual Voltage Output Volatile Digital-to-Analog Converters with SPI Interface 07/14/15