Datasheet

MAX5234/MAX5235
Single-Supply 3V/5V, Voltage-Output, Dual,
Precision 12-Bit DACs
14 ______________________________________________________________________________________
2R 2R 2R 2R 2R
D0 D9 D10 D11
RRR
REF_
GND
OUT_
1kΩ
77.25kΩ
121kΩ
SHOWN FOR ALL ONES ON DAC
Figure 3. Simplified DAC Circuit Diagram
SCLK
DIN
CS
MOSI
SCK
5V
I/O
SPI/QSPI
PORT
SS
MAX5234
MAX5235
Figure 4. SPI/QSPI Interface Connections
SCLK
DIN
CS
SK
SO
I/O
MICROWIRE
PORT
MAX5234
MAX5235
Figure 5. Connections for MICROWIRE
DAC CONTENTS
MSB LSB
ANALOG OUTPUT
1111 1111 1 111 (0)
1000 0000 0 001 (0)
1000 0000 0 000 (0)
0111 1111 1 111 (0)
0000 0000 0001 (0)
0000 0000 0 000 (0) 0V
Table 4. Unipolar Code Table
(Gain = 1.6384)
Note: () are for the sub-bit.
Table 5. Bipolar Code Table
Note: () are for the sub-bit.
+






×V
REF
1
4096
1 6384.
+






×V
REF
4095
4096
1 6384.
+






×V
REF
2049
4096
1 6384.
+






×=VV
REF REF
2048
4096
1 6384.
+






×V
REF
2047
4096
1 6384.
DAC CONTENTS
MSB LSB
ANALOG OUTPUT
1111 1111 1 111 (0)
1000 0000 0 001 (0)
1000 0000 0 000 (0) 0V
0111 1111 111 (0)
0000 0000 001 (0)
0000 0000 000 (0)






=VV
REF REF
2048
2048
--
+






V
REF
2047
2048
+






V
REF
1
2048






V
REF
1
2048
-






V
REF
2047
2048
-