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MCP4902-E/ST 数据表(PDF) 24 Page - Microchip Technology

部件名 MCP4902-E/ST
功能描述  8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with SPI Interface
PDF  48 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

MCP4902-E/ST 数据表(HTML) 24 Page - Microchip Technology

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MCP4902/4912/4922
DS22250A-page 24
 2010 Microchip Technology Inc.
REGISTER 5-1:
WRITE COMMAND REGISTER FOR MCP4922 (12-BIT DAC)
REGISTER 5-2:
WRITE COMMAND REGISTER FOR MCP4912 (10-BIT DAC)
REGISTER 5-3:
WRITE COMMAND REGISTER FOR MCP4902 (8-BIT DAC)
Where:
W-x
W-x
W-x
W-0
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
A/B
BUF
GA
SHDN D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
bit 15
bit 0
W-x
W-x
W-x
W-0
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
A/B
BUF
GA
SHDN
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
x
x
bit 15
bit 0
W-x
W-x
W-x
W-0
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
W-x
A/B
BUF
GA
SHDN
D7
D6
D5
D4
D3
D2
D1
D0
x
xx
x
bit 15
bit 0
bit 15
A/B: DACA or DACB Selection bit
1 =
Write to DACB
0 =
Write to DACA
bit 14
BUF: VREF Input Buffer Control bit
1 =
Buffered
0 =
Unbuffered
bit 13
GA: Output Gain Selection bit
1 =1x (VOUT = VREF * D/4096)
0 =2x (VOUT = 2 * VREF * D/4096)
bit 12
SHDN: Output Shutdown Control bit
1 =
Active mode operation. VOUT is available.
0 =
Shutdown the selected DAC channel. Analog output is not available at the channel that was shut down.
VOUT pin is connected to 500 k
typical)
bit 11-0
D11:D0: DAC Input Data bits. Bit x is ignored.
Legend
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
1 = bit is set
0 = bit is cleared
x = bit is unknown



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