aP8910A APLUS [Aplus Intergrated Circuits], aP8910A Datasheet - Page 16

• Manufacturer Part Number: aP8910A
• Description: Standard CMOS process
• Manufacturer: APLUS [Aplus Intergrated Circuits]

TYPICAL APPLICATIONS
Ver 2.1
Note 1: Two capacitors Cin and Cout must be connected from VDD and V33 pins to VSS to
Note 2: 16 Ohm speaker will provide lauder and better sound quality when the VOUT speaker
Note 3: The value of the 390 Ohm base resistor should be modified according to different Vdd
Note 4: The VPP pin should be leave unconnected for playback.
4.5~5V
stabilize the power supply to the chip. When small capacity battery, e.g. AG10, is
used, Cin and Cout may need to be as large as 22uF. However, if Cin and Cout is
too large, the power-up reset generated by 0.1uF at the RST pin may not be function
because it takes longer time for both Cin and Cout to discharge.
direct drive is used.
value, the kind of speaker and NPN transistor.
Integrated Circuits Inc.
Cin
4.7uF
Ros
0.1uF
c
Fig. 12 Using 4.5V Battery
RST
OSC
S1
S2
S3
S4
SBT
VDD
VSS
16
V33
COUT
VOUT1
VOUT2
OUT1
0.1uF
1KΩ
16 Ω
Speaker
aP8921A/10A
Cout
1~2uF
390Ω
8050D
Apr 3, 2007
8 ΩSpeaker