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MCP4802 Datasheet(PDF) 22 Page - Microchip Technology

Part # MCP4802
Description  8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal VREF and SPI Interface
PDF  46 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP4802 Datasheet(HTML) 22 Page - Microchip Technology

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MCP4802/4812/4822
DS22249A-page 22
 2010 Microchip Technology Inc.
REGISTER 5-1:
WRITE COMMAND REGISTER FOR MCP4822 (12-BIT DAC)
REGISTER 5-2:
WRITE COMMAND REGISTER FOR MCP4812 (10-BIT DAC)
REGISTER 5-3:
WRITE COMMAND REGISTER FOR MCP4802 (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
—
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
—
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
—
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
— Don’t Care
bit 13
GA: Output Gain Selection bit
1 =1x (VOUT = VREF * D/4096)
0 =2x (VOUT = 2 * VREF * D/4096), where internal VREF = 2.048V.
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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