MCP4812

更新时间： 2024-11-30 11:04:59

品牌	Logo	应用领域
美国微芯 - MICROCHIP		转换器
页数	文件大小	规格书
46页	1195K
描述
8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Interface

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MCP4812 数据手册

MCP4802/4812/4822

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

with Internal V_REFand SPI Interface

Features

Description

• 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

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.

• SPI Interface with 20 MHz Clock Support

The devices have a high precision internal voltage

reference (V_REF= 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).

• 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 V_REFTemperature Coefficient

• 2.7V to 5.5V Single-Supply Operation

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

Each DAC channel can be operated in Active or

Shutdown mode individually by setting the Configuration

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.

Applications

• Set Point or Offset Trimming

• Sensor Calibration

• Precision Selectable Voltage Reference

• Portable Instrumentation (Battery-Powered)

• Calibration of Optical Communication Devices

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).

(1)

与MCP4812相关器件

型号	品牌	获取价格	描述	数据表
MCP4812-E/MS	MICROCHIP	获取价格	8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Int
MCP4812-E/P	MICROCHIP	获取价格	8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Int
MCP4812-E/SN	MICROCHIP	获取价格	8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Int
MCP4812T-E/MS	MICROCHIP	获取价格	8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Int
MCP4812T-E/P	MICROCHIP	获取价格	8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Int
MCP4812T-E/SN	MICROCHIP	获取价格	8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Int
MCP4821	MICROCHIP	获取价格	12-Bit DACs with Internal VREF and SPI⑩ Inter
MCP4821-E/MC	MICROCHIP	获取价格	8/10/12-Bit Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Interfac
MCP4821-E/MS	MICROCHIP	获取价格	12-Bit DACs with Internal VREF and SPI⑩ Inter
MCP4821-E/P	MICROCHIP	获取价格	12-Bit DACs with Internal VREF and SPI⑩ Inter

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