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MAS9186 Datasheet(PDF) 5 Page - Micro Analog systems

Part No. MAS9186
Description  8 X 8-bit D to A Converter 3-pin Serial Data Interface Low Voltage Output Buffer
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Maker  MAS [Micro Analog systems]
Homepage  http://www.mas-oy.com
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MAS9186 Datasheet(HTML) 5 Page - Micro Analog systems

   
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5 (9)
DA9186.001
29 January, 2004
OPERATING MODES
DAC maximum output voltage is set using VREFH and VREFL pins (= 255/256 * (VREFH-VREFL)+VREFL)
(note: VREFL=GND in case of MAS9186A1). XRESET pin is used for middle code preset: DAC registers are
reset and middle code will appear at the DAC output.
Serial input data is written to SDI while XCS is low. Data is read at CLK rising edge to on-chip shift register.
Rising XCS-pin stops data reading and 11 CLK-cycles are used as the input data (3 address bits and 8 data
bits). The last 11 bits before rising XCS are used as input data.
◆ Timing diagram
APPLICATION AND TEST CIRCUIT INFORMATION
Clock
Data In
MAS9186A2
O8
O1
O2
O3
O4
O5
O6
O7
15
14
7
6
5
4
3
2
VREFH
VREFL
CLK
SDI
12
13
Controller
VDD
GND
+3.0v
11
10
1
16
XCS
Latch
9
8
XSHDN
100 nF
CLK
XCS
DAC Register Load
V
OUT
SDI
A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0


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