MAX522CSA Ver la hoja de datos (PDF) - Maxim Integrated

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MAX522CSA

Dual, 8-Bit, Voltage-Output Serial DAC in 8-Pin SO Package

Maxim Integrated 

Dual, 8-Bit, Voltage-Output

Serial DAC in 8-Pin SO Package

______________Applications Information

The MAX522 is specified for single-supply operation

with VDD ranging from 2.7V to 5.5V, covering all com-

monly used supply voltages in 3V and 5V systems.

Initialization

There is no internal power-on reset. Therefore, at

power-up, perform an initial write operation to set the

outputs to the desired voltage.

Power-Supply and

Ground Management

GND should be connected to the highest quality

ground available. Bypass VDD with a 0.1µF to 0.22µF

capacitor to GND. The reference input can be used

without bypassing. For optimum line/load-transient

response and noise performance, bypass the refer-

ence input with 0.1µF to 4.7µF to GND. Careful PC

board layout minimizes crosstalk among DAC outputs,

the reference, and digital inputs. Separate analog lines

with ground traces between them. Make sure that high-

frequency digital lines are not routed in parallel to ana-

log lines.

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