MAX5442 MAXIM [Maxim Integrated Products], MAX5442 Datasheet - Page 10

• Manufacturer Part Number: MAX5442
• Description: +3V/+5V, Serial-Input, Voltage-Output, 16-Bit DACs
• Manufacturer: MAXIM [Maxim Integrated Products]

+3V/+5V, Serial-Input,
Voltage-Output, 16-Bit DACs
Figure 2a shows the MAX5441–MAX5444 configured for
unipolar operation with an external op amp. The op amp
is set for unity gain, and Table 1 lists the codes for this
circuit. The bipolar MAX5442/MAX5444 can also be
used in unipolar configuration by connecting RFB and
INV to REF. This allows the DAC to power-up to mid-
scale.
Figure 2b shows the MAX5442/MAX5444 configured for
bipolar operation with an external op amp. The op amp
is set for unity gain with an offset of -1/2V
lists the offset binary codes for this circuit.
Bypass V
between V
leads close to the device (less than 0.25 inches).
10
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DD
DD
with a 0.1µF ceramic capacitor connected
and GND. Mount the capacitor with short
Power-Supply Bypassing and
Unipolar Configuration
Bipolar Configuration
Ground Management
REF
. Table 2
Table 2. Bipolar Code Table
Table 1. Unipolar Code Table
DAC LATCH CONTENTS
DAC LATCH CONTENTS
MSB
MSB
1111 1111 1111 1111
1000 0000 0000 0000
0000 0000 0000 0001
0000 0000 0000 0000
1111 1111 1111 1111
1000 0000 0000 0001
1000 0000 0000 0000
0111 1111 1111 1111
0000 0000 0000 0000
LSB
LSB
V
V
V
0
+V
+V
0
-V
-V
REF ✕
REF ✕
REF ✕
REF ✕
REF ✕
REF ✕
REF ✕
ANALOG OUTPUT, V
ANALOG OUTPUT, V
(32,768 / 65,536) = 1/ 2 V
(65,535 / 65,536)
(1 / 65,536)
(32,768 / 32,768) = -V
(1 / 32,768)
(32,767 / 32,768)
(1 / 32,768)
OUT
OUT
REF
REF