ISD1916 Datasheet, PDF (20/25 Pages) Winbond – SINGLE-CHIP, MULTIPLE-MESSAGE VOICE RECORD/PLAYBACK DEVICE 10.6- TO 32-SECONDS DURATION

ISD1916
9. TYPICAL APPLICATION CIRCUIT
The following typical application examples on ISD1916 series are for references only. They make
no representation or warranty that such applications shall be suitable for the use specified. It’s
customer’s obligation to verify the design in its own system for the functionalities, voice quality,
current consumption, and etc.
In addition, the below notes apply to the following application examples:
* The suggested values are for references only. Depending on system requirements, they can
be adjusted for functionalities, voice quality and degree of performance.
It is important to have a separate path for each ground and power back to the related terminals to
minimize the noise. Besides, the power supplies should be decoupled as close to the device as
possible.
Also, it is crucial to follow good audio design practices in layout and power supply decoupling. See
recommendations in Application Notes from our websites.
Example #1: Operations via start and end addresses under address trigger mode ( NORM )
To switches or
address I/Os
V_CC
4.7 k Ω∗
4.7 k Ω∗
4.7 k Ω∗
4.7µ F*
0.1 µ F*
0.1µ F*
4.7µ F*
Rosc*
REC
PLAYE
PLAYL
S3
S2
S1
S0
E3
E2
ISD1916
E1
E0
FT
Mic+_AnaIn
Mic-
AGC
Rosc
NORM
LED
1 KΩ ^D1
Vcc
XCLK
V_CCD
V_SSD
V_CCA
V_SSA
V_CCP
V_SSP1
V_SSP2
V_CCD
0.1µ F
V_CCA
V_CCD
V_CCP
10µ F*
V_CCA
0.1µ F
10 µ F*
0.1µ F
10 µF*
V_CCP
10µ F*
0.1µ F
SP+
SP-
Speaker
Gnd
Publication Release Date: September 11, 2007
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Revision 0