MAX5130 Maxim Integrated Products, MAX5130 Datasheet - Page 16

• Manufacturer Part Number: MAX5130
• Description: (MAX5130 / MAX5131) Voltage-output DACs
• Manufacturer: Maxim Integrated Products

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Any number of MAX5130/MAX5131s can be daisy-
chained simply by connecting the serial data output pin
(DOUT) of one device to the digital input pin (DIN) of
the following device in the chain (Figure 12).
+3V/+5V, 13-Bit, Serial Voltage-Output DACs
with Internal Reference
Table 5. Unipolar Code Table (Gain = +1.6384V/V)
Table 6. Bipolar Code Table for Figure 11
Figure 12. Daisy-Chaining Multiple Devices with the Digital I/Os DIN/DOUT
16
MSB
MSB
______________________________________________________________________________________
1 1111 1111 1111
1 0000 0000 0001
1 0000 0000 0000
0 1111 1111 1111
0 0000 0000 0001
0 0000 0000 0000
1 1111 1111 1111
1 0000 0000 0001
1 0000 0000 0000
0 1111 1111 1111
0 0000 0000 0001
0 0000 0000 0000
DAC CONTENTS
DAC CONTENTS
LSB
LSB
SCLK
DIN
CS
MAX5130
MAX5131
Daisy-Chaining Devices
I
DOUT
+2.49939V
+610.35µV
MAX5130
MAX5130
-610.35µV
-2.49939V
+4.0955V
+2.0485V
+2.0480V
+2.0475V
+0.5mV
-2.5V
INTERNAL REFERENCE
0V
INTERNAL REFERENCE
0V
SCLK
DIN
CS
MAX5130
MAX5131
+2.04775V
+1.02425V
+1.02400V
+1.02375V
+1.24969V
+305.18µV
-305.18µV
-1.24969V
MAX5131
MAX5130
+0.25mV
-1.25V
II
ANALOG OUTPUT
ANALOG OUTPUT
0V
0V
DOUT
Another configuration allows several MAX5130/
MAX5131 DACs to share one common DIN signal line
(Figure 13). In this configuration, the data bus is
common to all devices; data is not shifted through a
daisy-chain. However, more I/O lines are required in
this configuration, because each IC needs a dedicated
CS line.
V
V
V
V
+V
+V
+V
+V
REF
REF
REF
REF
EXTERNAL REFERENCE
EXTERNAL REFERENCE
V
+V
REF
REF
REF
REF
REF
SCLK
DIN
CS
REF
·
·
·
·
[ {2
[ {2
[ {2
[ {2
·
(8191 / 8192)
(4097 / 8192)
(4096 / 8192)
(4095 / 8192)
MAX5130
MAX5131
[ {2
(1 / 8192)
·
·
·
·
III
(8191 / 8192)} - 1]
(4097 / 8192)} - 1]
(4096 / 8192)} - 1]
(4095 / 8192)} - 1]
-V
·
0V
(1 / 8192)} - 1]
REF
DOUT
·
1.6384
·
·
·
·
1.6384
1.6384
1.6384
1.6384
TO OTHER
SERIAL DEVICES