ISD1000A Datasheet, PDF (17/20 Pages) List of Unclassifed Manufacturers – Single-Chip Voice Record/Playback Devices 16- and 20-Second Durations

Product Data Sheets
ISD1000A Series
APPLICATION EXAMPLE – DESIGN SCHEMATIC
V_CC
ISD1016A/1020A
V_CC
CHIP ENABLE
POWER DOWN
PLAYBACK/RECORD
V_{SS 1 A0}
2 _A1
3 _A2
4 _A3
5 _A4
6 _A5
9 _A6
10 _A7
23 _CE
24 _PD
27 _P/R
25 _EOM
26 _XCLK
V_CCD
V_CCA
VSSD
V_SSA
28
16
C6
12 ^{0.1 µF}
13
SP+ ¹⁴
SP– ¹⁵
AUX IN ¹¹
ANA IN ²⁰
ANA OUT ²¹
R5
5.1 KΩ
MIC REF ^{18 (Note)}
MIC ¹⁷
AGC ¹⁹
V_CC
R1
C7
0.1 µF
C8
22 µF
C3
0.1 µF
16 Ω
SPEAKER
C1
0.1 µF
C5
0.1 µF
Mic Ref
NOTE: If desired, pin 18 may be left unconnected
R2
1 KΩ
R3
(microphone preamplifier noise will be higher). In this
470 KΩ
10 KΩ
R4
case, pin 18 must not be tied to any other signal or
voltage.
Additional design example schematics are provided in
C2
4.7 µF
C4
ELECTRET
MICROPHONE
10 KΩ
1
220 µF
the Application Notes and Design Manual in this book.
APPLICATION EXAMPLE – BASIC DEVICE CONTROL
Control Step
1
2
3
4
Function
Power up chip and select record/playback mode
Set message address for record/playback
Begin playback/record
End cycle
Action
1. PD = LOW
2. P/R = As desired
Set addresses A0–A7
CE = Pulsed LOW (Playback)
CE = Held LOW (Record)
CE = HIGH and EOM reached
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