CS3302_07 Datasheet, PDF (12/16 Pages) Cirrus Logic – High-Z, Programmable Gain, Differential Amplifier

CS3302
This voltage is typically from a bipolar ±2.5 V sup-
ply. When using bipolar supplies the analog signal
common mode voltage should be biased to 0 V.
The analog power supplies are recommended to be
bypassed to system ground using 0.1 µF X7R type
capacitors.
The VA- supply is connected to the CMOS sub-
strate and as such must remain the most negative
applied voltage to prevent potential latch-up condi-
tions. Care should be taken to ensure analog input
voltages do not drop more than -0.3 V below the
VA- supply. Care should also be taken to establish
the VA- supply before analog signals are applied to
the device. It is recommended to clamp the VA-
supply to system ground using a reverse biased
Schottky diode to prevent possible latch-up condi-
tions related to mismatched supply rail initializa-
tion.
2.3.2 Digital Power Supplies
The digital power supply across the VD and DGND
pins is flexible and can be set to interface with
3.3 V or 5 V logic. The digital power supply should
be bypassed to system ground using a 0.01 µF X7R
type capacitor.
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