Manualshelf

Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsData collecting ICsData acquisition IC - DA converter (DAC) MSOP 8
21222324252627282930
MCP4901/4911/4921
DS22248A-page 24 2010 Microchip Technology Inc.
REGISTER 5-1: WRITE COMMAND REGISTER FOR MCP4921 (12-BIT DAC)
REGISTER 5-2: WRITE COMMAND REGISTER FOR MCP4911 (10-BIT DAC)
REGISTER 5-3: WRITE COMMAND REGISTER FOR MCP4901 (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
0BUFGA
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
0BUFGA
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
0BUFGA
SHDN D7 D6 D5 D4 D3 D2 D1 D0 x xxx
bit 15 bit 0
bit 15 0 = Write to DAC register
1 = Ignore this command
bit 14 BUF: V
REF
Input Buffer Control bit
1 = Buffered
0 = Unbuffered
bit 13 GA
: Output Gain Selection bit
1 =1x (V
OUT
= V
REF
* D/4096)
0 =2x (V
OUT
= 2 * V
REF
* D/4096)
bit 12 SHDN
: Output Shutdown Control bit
1 = Active mode operation. V
OUT is available.
0 = Shutdown the device. Analog output is not available. V
OUT pin is connected to 500 ktypical)
bit 11-0 D11:D0: DAC Input Data bits. Bit x is ignored.