CS5181 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS5181

∆Σ Modulator & 400 kHz to 625 kHz 16-Bit ADC

Cirrus Logic 

CS5181

Power-down Mode

The CS5181 has a PWDN (power-down) function.

When active low, power to most of the converter’s

circuitry will be reduced. If MCLK is to be stopped

to save power, it should not be stopped until at least

ten clock cycles after PWDN is taken low. The ten

clock cycles are required to allow the part to turn

off it’s internal circuitry. If the part does not get the

full ten clock cycles, it will still go into a power

down state, but the power dissipation could be

more than is listed in the specifications for the full

power down condition. When PWDN is active, the

calibration information inside of the converter is

maintained. When coming out of the power-down

state, the converter is not recalibrated and will

start-up similar to when SYNC is initiated.

14

DS250PP1

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