MAX5354 Maxim, MAX5354 Datasheet - Page 14

• Manufacturer Part Number: MAX5354
• Description: 10-Bit Voltage-Output DACs in 8-Pin MAX
• Manufacturer: Maxim

10-Bit Voltage-Output DACs
in 8-Pin µMAX
Figure 10. Bipolar Output Circuit
Figure 12. Digitally Programmable Current Source
On power-up, the input and DAC registers are cleared
(set to zero code).
For rated MAX5354/MAX5355 performance, REF must
be at least 1.4V below V
capacitor in parallel with a 0.1µF capacitor to GND.
Use short lead lengths and place the bypass capaci-
tors as close to the supply pins as possible.
14
REF
______________________________________________________________________________________
DAC
+5V/+3.3V
MAX5354
MAX5355
V
GND
DD
DAC
REF
Power-Supply Considerations
+5V/+3.3V
R1
GND
V
DD
MAX5354
MAX5355
DD
OUT
FB
. Bypass V
R1 = R2 = 10k ± 0.1%
OUT
FB
V+
V-
DD
2N3904
V
L
R2
R
with a 4.7µF
I
OUT
V
OUT
Digital or AC transient signals on GND can create noise
at the analog output. Tie GND to the highest-quality
ground available.
Good printed circuit board ground layout minimizes
crosstalk between the DAC output, reference input, and
digital input. Reduce crosstalk by keeping analog lines
away from digital lines. Wire-wrapped boards are not
recommended.
Figure 11. AC Reference Input Circuit
REFERENCE
500mVp-p
INPUT
+3.3V
+5V/
AC
Grounding and Layout Considerations
26k
10k
+5V/+3.3V
DAC
REF
MAX495
MAX5354
MAX5355
V
DD
GND
OUT