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器件3D模型￥ 12.718
MCP4802-E/MS 其他数据使用手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
DA转换器
封装:
MSOP-8
描述:
8位 数模转换器 带SPI接口和内部VREF
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P15Hot
典型应用电路图在P25
原理图在P2
标记信息在P35
封装信息在P35P36P37P38P39P40P41P42P47
技术参数、封装参数在P4P5P6P7P21
应用领域在P1P25
电气规格在P4P5P6P7P18
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MCP4802-E/MS数据手册
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2010-2015 Microchip Technology Inc. DS20002249B-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
•50ppm/°C V
REF
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 (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).
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
Related Products
(1)
P/N
DAC
Resolution
No. of
Channels
Voltage
Reference
(V
REF
)
MCP4801 8 1
Internal
(2.048V)
MCP4811 10 1
MCP4821 12 1
MCP4802 8 2
MCP4812 10 2
MCP4822 12 2
MCP4901 8 1
External
MCP4911 10 1
MCP4921 12 1
MCP4902 8 2
MCP4912 10 2
MCP4922 12 2
Note 1: The products listed here have similar
AC/DC performances.
MCP48X2
8-Pin PDIP, SOIC, MSOP
1
2
3
4
8
7
6
5
CS
SCK
SDI
V
DD
V
SS
V
OUTA
V
OUTB
LDAC
MCP4802: 8-bit dual DAC
MCP4812: 10-bit dual DAC
MCP4822: 12-bit dual DAC
8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter
with Internal V
REF
and SPI Interface
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