SC9102C Просмотр технического описания (PDF) - Silan Microelectronics
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SC9102C Datasheet PDF : 16 Pages
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Silan
Semiconductors
SC9102C/D
(continued)
Parameter
Symbol
Conditions
Min
Typ
Pre-digit Pause
Pulse rate=10pps
M/B ratio=40:60
tPDP
M/B ratio=33:66
--
40
--
33
Pre-digit Pause
Pulse rate=20pps
M/B ratio=40:60
tPDP
M/B ratio =33:66
--
20
--
16.5
Inter-digit Pause
Pulse rate=10pps
tIDP
Pulse rate=20pps
--
800
--
600
Tone Mode
DC Level
Vdc
VDD=2.0V~5.5V
0.45VDD 0.55VDD
Tone
Sink Current
Itl
Vdtmf=0.5V
0.15
--
Output Pin AC level
Vdtmf Row group RL=10KΩ
120
150
Load Resistor
R1
Dist.<=-23dB
10
--
Pre-emphasis
DTMF Signal
Distortion(note 2)
twist
Dist.
VDD=2.0~5.5 V
RL=10KΩ
1
2
--
-30
Minimum tone duration Time
tTD
Auto redial
--
100
Minimum Intertone Pause Time
tTTP
Auto redial
--
106
Note: 1. Vn: Input voltage of any keyboard scanning pin (Row group, Column group)
2 Distortion (dB) = 20log{[V12+V22+V32+…Vn2)1/2]/[(VL2+VH2)1/2]}
VL,VH: Row group and Column group signal
V1 V2… Vn: Harmonic signal (BW = 300Hz~3500Hz
Max
--
--
--
--
--
--
0.7VDD
--
180
--
3
-23
--
--
Unit
ms
ms
ms
V
mA
mVrms
KΩ
dB
dB
ms
ms
ACTUAL FREQUENCY OUTPUT (fosc=3.579545MHz)
Keyboard Scanning Pin
Standard(Hz)
R1
f1
697
R2
f2
770
R3
f3
852
R4
f4
941
C1
f5
1209
C2
f6
1336
C3
f7
1477
Output
699
766
848
948
1216
1332
1472
Deviation(%)
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
Rev: 2.0 2001-11-02
4
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