ISD5008 Datasheet, PDF (1/47 Pages) List of Unclassifed Manufacturers – SINGLE CHIP VOICE RECORD PLAYBACK DEVICE 4-, 5-, 6-, AND 8- MINUTE DURATIONS

ISD5008
Single-Chip Voice Record/Playback Device
4-, 5-, 6-, and 8-Minute Durations
ISD5008 PRODUCT SUMMARY
Preliminary Datasheet
The ISD5008 ChipCorder product is a fully-inte-
grated, single-chip solution which provides seam-
less integration of enhanced voice record and
playback features for digital cellular phones (GSM,
CDMA, TDMA, PDC, and PHS), automotive com-
munications, GPS/navigation systems, and porta-
ble communication products. This low-power, 3-
volt product enables customers to quickly and
easily integrate 4 to 8 minutes of voice storage
features such as one-way and two-way (full du-
plex) call record, voice memo record, and call
screening/answering machine functionality.
Like other ChipCorder products, the ISD5008 inte-
grates the sampling clock, anti-aliasing and
smoothing filters, and the multi-level storage array
on a single-chip. For enhanced voice features,
the ISD5008 eliminates external circuitry by also in-
tegrating automatic gain control (AGC), a power
amplifier/speaker driver, volume control, sum-
ming amplifiers, analog switches, and a car kit in-
terface. Input level adjustable amplifiers are also
included, providing a flexible interface for multiple
applications.
Figure: ISD5008 Block Diagram
MICROPHONE
MIC+
MIC -
AGCCAP
CAR KIT
AUX IN
XCLK
CHIP SET
ANA IN
6dB
MIC IN
AGC
1
(AGPD)
AUX IN
AUX IN
1
(INS0)
AMP ₁
(AXPD)
( ) ^AXG0
2 AXG1
FILTO
ANA IN
INP
SUM1 MUX
SUM1
Summing
Σ AMP
SUM1
2
( ) S1M0
S1M1
ARRAY
1
(FLS0)
Low Pass
Filter
1
(FLPD)
FILTO
ANA IN
SUM2
Summing
Σ ^AMP
2
( ) S2M0
S2M1
ARRAY
2
( ) S1S0
S1S1
Internal
Clock
( ) 2 FLD0
FLD1
Multilevel
Storage Array
FTHRU
INP
FILTO
SUM1
VOL
SUM2
ANA
OUT
AMP
1
(AOPD)
3
( )AOS0
AOS1
AOS2
FILTO
VOL
AUX
OUT
AMP
ANA IN
AMP
1
(AIPD)
2
( ) AIG0
AIG1
Power Conditioning
SUM1
INP
ANA IN
SUM2
2
( ) VLS0
VLS1
Volume
Control
3
( )VOL0
VOL1
VOL2
1
(VLPD)
SUM2
ANA IN
2
( ) OPS0
OPS1
Spkr.
AMP
2
( ) OPA0
OPA1
Device Control
CHIP SET
ANA OUT+
ANA OUT-
CAR KIT
AUX OUT
SPEAKER
SP+
SP-
V_CCA V_SSA V_SSA V_SSA V_SSD V_SSD V_CCD V_CCD
SCLK SS MOSI MISO INT RAC
August 2000
ISD · 2727 North First Street, San Jose, CA 95134 · TEL: [phone] · FAX: [phone] · http://www.isd.com