max5520etc Maxim Integrated Products, Inc., max5520etc Datasheet - Page 18

• Manufacturer Part Number: max5520etc
• Description: +1.8v To +5.5v, Ultra-low-power, 10-bit, Voltage-output Dacs
• Manufacturer: Maxim Integrated Products, Inc.

+1.8V to +5.5V, Ultra-Low-Power, 10-Bit,
Voltage-Output DACs
Bypass the power supply with a 0.1µF capacitor to GND.
Minimize lengths to reduce lead inductance. If noise
becomes an issue, use shielding and/or ferrite beads to
increase isolation. For the thin QFN package, connect
the exposed paddle to ground.
Figure 8. Bipolar Output Circuit
18
REFIN
______________________________________________________________________________________
MAX5520
DAC
Power Supply and Bypassing
10kΩ
OUT
FB
Considerations
10kΩ
V+
V-
V
OUT
Layout Considerations
Digital and AC transient signals coupling to GND can
create noise at the output. Use proper grounding tech-
niques, such as a multilayer board with a low-inductance
ground plane. Wire-wrapped boards and sockets are not
recommended. For optimum system performance, use
printed circuit (PC) boards. Good PC board ground lay-
out minimizes crosstalk between DAC outputs, reference
inputs, and digital inputs. Reduce crosstalk by keeping
analog lines away from digital lines.
Figure 9. Separate Force-Sense Outputs Create Unity and
Greater-than-Unity DAC Gains Using the Same Reference
REFIN
DAC
MAX5520
FB
OUT
R2
R1
V
OUT