msm6722gs-k Oki Semiconductor, msm6722gs-k Datasheet - Page 9

• Manufacturer Part Number: msm6722gs-k
• Description: Pitch Control Ic For The Speech Signal
• Manufacturer: Oki Semiconductor

¡ Semiconductor
Connecting an Oscillator
Connect ceramic or crystal oscillators to the XT and XT pins as shown below.
The optimal load capacitance values when connecting ceramic oscillators of MURATA MFG.
and KYOCERA CORPORATION are shown below for reference.
FUNCTIONAL DESCRIPTION
Power Supply Wiring
As shown in the diagram below, supply the power to this IC from the same power source, but
separate the wiring for the analog and the logic sections.
To improve the electrical characteristics, insert a bypass capacitor of 0.1 mF or more between
DV
Do not supply the power to the analog section and the logic section from separate power sources;
otherwise latch-up may occur.
MURATA MFG.
KYOCERA CORPORATION
DD
Analog power supply
Digital power supply
and DGND and between AV
No good
Ceramic oscillator
CSA4.00MG
CST4.00MGW (with capacitor)
KBR-4.0MSA
KBR-4.0MKS
PBRC4.00B
+5 V
DV
Model name
DD
DD
C
1
XT
and AGND.
MSM6722
AV
DGND
DV
DD
DD
MSM6722
Frequency (MHz)
XT
+5 V
C
2
AGND
4.0
4.0
AV
No good
DD
DV
DD
Optimal load capacitance
C
1
30
33
(pF)
MSM6722
C
2
AV
30
33
(pF)
DD
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