|
ISD2532 Datasheet, PDF (30/42 Pages) Winbond – SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION | |||
|
◁ |
ISD2532/40/48/64
11. TYPICAL APPLICATION CIRCUIT
VCC
VSS
CHIP ENABLE
R4
100 Kâ¦
POWER DOWN
PLAYBACK/RECORD
ISD2532/40/48/64
VCC
1 A0
2 A1
3 A2
4 A3
5 A4
6 A5
7 A6
9 A7
10 A8
23 CE
24 PD
27 P/R
25 OEM
22 OVF
26 XCLK
VCCD 28
VCCA 16
C6
0.1 µ F
VSSD 12
VSSA 13
SP+ 14
SP- 15
AUX IN 11
ANA IN 20
ANA OUT 21
R6
5.1 K â¦
C7
0.1 µ F
C3
0.1 µ F
C8
22 µF
16 â¦
SPEAKER
MIC REF 18
MIC 17
AGC 19
(Note)
VCC
C1
0.1 µ F
R1
1 Kâ¦
R3
10 Kâ¦
R2
470 Kâ¦
C2
4.7 µ F
C4
220 µ F
ELECTRET
MICROPHONE
C5
0.1 µ F
R5
10 Kâ¦
FIGURE 5: DESIGN SCHEMATIC
Note: If desired, pin 18 (PDIP package) may be left unconnected (microphone preamplifier noise will be higher). In
this case, pin 18 must not be tied to any other signal or voltage. Additional design example schematics are
provided below.
- 30 -
|
▷ |