12 X 8-bit D to A Converter
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DA9187.002 29 January, 2004
MAS9187
12 X 8-bit D to A Converter
• 3-pin Serial Data Interface • Lo...
Description
www.DataSheet4U.com
DA9187.002 29 January, 2004
MAS9187
12 X 8-bit D to A Converter
3-pin Serial Data Interface Low Voltage Output Buffer
DESCRIPTION
MAS9187 is 12-channel 8-bit DAC, designed primarily for trimmer replacement. Device is controlled by a simple 3-line input. The output buffers operate in the entire voltage range from ground to the positive power supply rail. DAC is selected with four first bits in serial input data (SDI-pin) and the DAC output value is set according to the last 8 bits in serial input data.
FEATURES
Twelve 8-bit DACs on a single monolithic chip Voltage level output TSSOP 20 package Single, low +1.8 V supply Power-on reset
APPLICATIONS
High resolution monitors Automatic gain control Trimmer replacement
BLOCK DIAGRAM
SDI CLK
12-bit Shift Register
8-bit data
8-BIT DAC 8-BIT DAC 8-BIT DAC 8-BIT DAC 8-BIT DAC
O12 O11 O10 O9 O8 O7
XCS
Address Decoder
8-BIT DAC 8-BIT DAC 8-BIT DAC 8-BIT DAC 8-BIT DAC 8-BIT DAC 8-BIT DAC
O6 O5 O4 O3 O2 O1
VREFHVREFL
VDD
GND
1 (7)
DA9187.002 29 January, 2004
PIN CONFIGURATION
VREFH O1 O2 O3 O4 O5 O6 XSHDN XCS GND
1 2 3 4 20 19 18 17
VDD XRESET O12 O11 O10 O9 O8 O7 SDI CLK
VREFH 1 O1 2
20 VDD 19 O12 18 O11 17 O10 16 O9 15 O8 14 O7 13 SDI 12 CLK 11 VREFL
O2 3 O3 4 O4 5 O5 6 O6 7 XSHDN 8 XCS 9 GND 10
MAS9187A1 YYWW
5 6 7 8 9 10
16 15 14 13 12 11
MAS9187A2 YYWW
Top view YYWW = year, week
PIN DESCRIPTION
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 MAS9187 A1 V...
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