AK9223MK Datasheet, PDF (12/16 Pages) Asahi Kasei Microsystems – Dual 1-Bit, 10MHz, 2nd-Order, ΔΣ Modulat

[AK9223]
■ Power Supply
System Design
Digital power supply determines the I/O interface voltage. It ranges from 2.7V to 5.5V. Inputs to the
AK9223, such as AIN+, AIN- and CLKI pins should not be present before the power supply is on.
■ Decoupling
A decoupling capacitor should be connected to the pin as close as possible. A 0.1μF ceramic capacitor
should be connected between AVDD (Pin #1) and VSS1, AVDD (Pin #12) and VSS2, AVDD (Pin #13)
and VSS3, AVDD (Pin #24) and VSS4, and DVDD and VSS5.
If the analog and digital I/O powers are drawn from the same source, connect a 10Ω resistor between the
analog and digital power supply pins, and connect the power source to the analog power supply pin. An
RC filter should be composed by this 10Ω resister and a 0.1μF capacitor to reduce noises in the analog
supply.
014010283-E-01
12
2015/01