參數(shù)資料
型號(hào)： MCP4901-E/MC
廠商： Microchip Technology
文件頁(yè)數(shù)： 1/22頁(yè)
文件大?。?/td> 0K
描述： DAC 8BIT SGL 1CH W/SPI 8DFN
標(biāo)準(zhǔn)包裝： 150
設(shè)置時(shí)間： 4.5µs
位數(shù)： 8
數(shù)據(jù)接口： 串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
電壓電源： 單電源
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 8-VFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 8-DFN（2x3）
包裝： 管件
輸出數(shù)目和類型： 1 電壓，單極；1 電壓，雙極
采樣率（每秒）： *
產(chǎn)品目錄頁(yè)面： 673 (CN2011-ZH PDF)
2010 Microchip Technology Inc.
DS22248A-page 1
MCP4901/4911/4921
Features
MCP4901: 8-Bit Voltage Output DAC
MCP4911: 10-Bit Voltage Output DAC
MCP4921: 12-Bit Voltage Output DAC
Rail-to-Rail Output
SPI Interface with 20 MHz Clock Support
Simultaneous Latching of the DAC Output
with LDAC Pin
Fast Settling Time of 4.5 s
Selectable Unity or 2x Gain Output
External Voltage Reference Input
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
Description
The MCP4901/4911/4921 devices are single channel
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
an SPI compatible Serial Peripheral Interface. The user
can configure the full-scale range of the device to be
VREF or 2*VREF by setting the gain selection option bit
(gain of 1 of 2).
The user can shut down the device by setting the Con-
figuration Register bit. In Shutdown mode, most of the
internal circuits 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 the DAC output 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 Differential Non-Linear-
ity (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 MCP4901/4911/4921 devices are available in the
PDIP, SOIC, MSOP and DFN packages.
Package Types
P/N
DAC
Resolution
No. of
Channels
Voltage
Reference
(VREF)
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: The products listed here have similar AC/DC
performances.
DFN-8 (2x3)*
1
2
3
4
8
7
6
5
CS
SCK
SDI
VDD
VSS
VOUT
LDAC
MCP4901: 8-bit single DAC
MCP4911: 10-bit single DAC
MCP4921: 12-bit single DAC
M
C
P49x
1
8-Pin PDIP, SOIC, MSOP
1
2
3
4
8
7
6
5
CS
SCK
SDI
VDD
VSS
VOUT
LDAC
VREF
EP
9
* Includes Exposed Thermal Pad (EP); see Table 3-1.
8/10/12-Bit Voltage Output Digital-to-Analog Converter
with SPI Interface
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