AK2331 Datasheet, PDF (15/17 Pages) Asahi Kasei Microsystems – DAC Type 8-bit 4-channel Electronic Volume

[AK2331]
Recommended External Circuit Examples
1) Power supply stabilizing capacitors
Connect capacitors between the VDD and VSS pins to eliminate ripple and noise included in the power
supply as shown below. For maximum effect, the capacitors should be placed at a shortest distance
between the pins.
AVDD
DVDD
C1
C2
VSS
C1 = 0.1μF (Ceramic cap)
C2 = 4.7μF (Electrolytic cap)
LSI
2) External VIN0 to VIN3 capacitor
When inputting an analog signal to the VIN pin, connect a capacitor to adjust the DC offset of the input
signal and the internal operation point in the LSI device. This forms a high-pass filter with fc being
about 130Hz.
VIN0 to VIN3
C
LSI
C = 0.01μF
MS0903-E-00
- 15 -
2008/03