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PDF IL145567 Data sheet ( Hoja de datos )
| Número de pieza | IL145567 | |
| Descripción | PCM Codec-Filter | |
| Fabricantes | IK Semiconductor | |
| Logotipo |  |
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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
1 page  
IL145567
Analogue electrical characteristics
(VCC = 5V ± 5%, VBB = -5V ± 5%, VFXI- connected to GSX )
Characteristic
Input current (-2.5 V ≤ Vin ≤ 2.5 V)
Input impedance to GNDA at frequency 1 kHz
VFXI+, VFXI-
VFXI+, VFXI-
Input capacitance
VFXI+, VFXI-
Input bias voltage GSX Op Amp
VFXI+, VFXI-
Range of input common-mode voltages
VFXI+, VFXI-
Amplification ratio without feedback GSX Op Amp
(Rload ≥ 10 kOhm)
Attenuation factor of in-phase components on out. VFXI+, VFXI-
Frequency band of unity gain on out. GSX Op Amp
(Rload ≥ 10 kOhm)
Equivalent input noise between out. VFXI+, VFXI- and GSX
Load capacitance for GSX Op Amp
Output range of voltages for GSX
Rload = 10 kOhm relat. GNDA
Rload = 600 Ohm relat. GNDA
Output current (-2.8 V ≤ Vout ≤ 2.8 V)
GSX, VFRO
Output impedance on out. VFRO in the frequency range from 0 to 3.4 kHz
Load capacitance for output VFRO
Bias voltage for output VFRO relatively to GNDA
Noise abatement on supply on transmission
(+) – from 0 to 100 kHz;
(-) - from 0 to 100 kHz;
min
–
10
–
–
- 2.5
75
0
0
–
45
45
typical
–
65
1000
-20
- 3.5
- 2.8
± 5.0
1
max
± 0.2
–
10
± 25
2.5
–
100
+ 3.5
+ 2.8
–
500
± 100
Unit
mkA
MOhm
pF
mV
V
dB
dB
kHz
dBm
pF
V
mA
Ohm
pF
mV
dB
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet IL145567.PDF ] | |
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