DA9187.002
29 January, 2004
MAS9187
12 X 8-bit D to A Converter
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3-pin Serial Data Interface
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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
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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
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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)
MAS [ MICRO ANALOG SYSTEMS ]
