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IL145567 fiches techniques PDF

IK Semiconductor - PCM Codec-Filter

Numéro de référence IL145567
Description PCM Codec-Filter
Fabricant IK Semiconductor 
Logo IK Semiconductor 





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IL145567 fiche technique
PCM CODEC - FILTER
TECHNICAL DATA
IL145567
IL145567N is a one-chip PCM-cofidec which converts speech signal
into digital form and backwards. The IC is design to operate in
synchronous and asynchronous systems and is comprised of:
- reference generator;
- filters on switching capacitors in transmission and receipt channels ;
- two operational amplifiers.
The IC does signal companding under the A-low and full differential
processing of analogue signals for reduction of noises. Typical
dissipated power is 40mW, under reduced power – 1 mW at ±5 V.
ORDERING INFORMATION
IL145567N Plastic DIP
TA = -40° to 85° C
GSX ANBL
MCLKR/ BCLKR/
www.DataSheet4U.comCLKSEL
Vcc GND
VBB
FSX FSR MCLKX BCLKX PDN
VFXI-
Active RC-
filter of LF
5-poles
active filter
of LF
3-poles filter
of HF
Control logic
VFX+
TSx
VPO+
VPO
VPI
VFRO
Reference
generator
Active RC-
filter of LF
R-D-to-A
converter
5-poles filter
of LF
COMP
С-D-to-A
converter
4
Multi-
plexer
Storage/hol
ding circuit
4
Shift
register
8
Receivin
g latch
8
Transmitti
ng register
Dx
Receiving DR
register
Note – COMP – comparator
Figure 1 – Block diagram
1

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