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MCP4912-E/SL 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:
SOIC-14
描述:
MICROCHIP MCP4912-E/SL 数模转换器, 双路, AEC-Q100, 10 bit, 串行, 2.7V 至 5.5V, SOIC, 14 引脚
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引脚图在P17Hot
典型应用电路图在P27
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标记信息在P37
封装信息在P37P42P45
技术参数、封装参数在P4P5P6P7P8P23
应用领域在P1P27
电气规格在P4P5P6P7P8P20
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MCP4912-E/SL数据手册
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2010 Microchip Technology Inc. DS22250A-page 1
MCP4902/4912/4922
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
with LDAC
pin
• 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
(1)
Description
The MCP4902/4912/4922 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 user
can configure the full-scale range of the device to be
V
REF
or 2 * V
REF
by setting the Gain Selection Option
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 ktypical.
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 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
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.
MCP4902: 8-bit dual DAC
MCP4912: 10-bit dual DAC
MCP4922: 12-bit dual DAC
141
2
3
4
13
12
11
10
9
8
5
6
7
14-Pin PDIP, SOIC, TSSOP
V
DD
NC
CS
SCK
V
REFB
NC
NC
SDI
LDAC
SHDN
V
OUTB
V
OUTA
V
REFA
V
SS
MCP49X2
8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter
with SPI Interface
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