MAS9187

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...