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SC9302DT Datasheet(PDF) 8 Page - Silan Microelectronics Joint-stock

Part # SC9302DT
Description  1-MEMORY/2-MEMORY TONE/PULSE DIALER
Download  39 Pages
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Manufacturer  SILAN [Silan Microelectronics Joint-stock]
Direct Link  http://www.silan.com.cn
Logo SILAN - Silan Microelectronics Joint-stock

SC9302DT Datasheet(HTML) 8 Page - Silan Microelectronics Joint-stock

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Silan
Semiconductors
SC9302 Series
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2001-11-01
8
TONE MODE ELECTRICAL CHARACTERISTICS
(Tamb=25
°C, fosc=3.5795MHz,unless otherwise specified)
Test Conditions
Parameter
Symbol
VDD
Condition
Min
Typ
Max
Unit
DTMF Output DC Level
V
TDC
--
--
0.45V
DD
--
0.7V
DD
V
DTMF Sink Current
I
TOL
2.5V
V
DTMF =0.5V
0.1
--
--
mA
DTMF Output AC Level
V
TAC
--
Row group, R
L =5k
Ω
0.12
0.155
0.18
Vrms
DTMF Output Load
R
L
2.5V
THD
≤ -23dB
5
--
--
k
Ω
Column Pre-emphasis
A
CR
2.5V
Row group = 0dB
1
2
3
dB
Tone Signal Distortion
THD
2.5V
R
L =5k
Ω
--
-30
-23
dB
Others
--
82.5
--
Minimum Tone Duration
T
TMIN
--
Auto-redial
9302G
--
100
--
ms
Others
--
85.5
--
Minimum Inter-tone Pause
T
ITPM
--
Auto-redial
9302G
--
106
--
ms
THD (Distortion)(dB)=20log
)
V
+
V
/
V
+
...
+
V
+
V
(
2
h
2
i
2
n
2
2
2
1
Vi, Vh: Row group and column group signals
V
1,V2, …Vn: Harmonic signals (BW=300Hz~3500Hz)
APPROXIMATE INTERNAL CONNECTION CIRCUITS
NMOS OUT
CMOS IN/OUT
VDD
CMOS IN
CMOS OUT
VDD
CMOS IN
Pull-High
VDD
CMOS IN
Pull-Low
EN
10pF
20pF
10M
X1
X2
OSCILLATOR


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