MAS9186AUA1 MAS [Micro Analog systems], MAS9186AUA1 Datasheet - Page 5

• Manufacturer Part Number: MAS9186AUA1
• Description: 8 X 8-bit D to A Converter 3-pin Serial Data Interface Low Voltage Output Buffer
• Manufacturer: MAS [Micro Analog systems]

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
SDI
XCS
APPLICATION AND TEST CIRCUIT INFORMATION
CLK
V
OUT
A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0
Controller
Data In
Clock
Latch
100 nF
DAC Register Load
12
13
9
8
XSHDN
CLK
SDI
XCS
MAS9186A2
16
10
VDD
GND
+3.0v
VREFL
VREFH
1
O8
O7
O6
O5
O4
O3
O2
O1
11
15
14
7
6
5
4
3
2
29 January, 2004
DA9186.001
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