SC91650A データシートの表示（PDF） - Silan Microelectronics
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SC91650A
Silan Microelectronics
SC91650A Datasheet PDF : 30 Pages
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Silan
Semiconductors
SC91650/1/2 A/B
(continued)
Parameter
Symbol
Conditions
Min
Typ
Max Unit
Pre-digit Pause
M/B ratio=40:60
tPDP
M/B ratio=33:66
--
40
--
ms
--
33
--
Inter-digit Pause
Pulse rate=10pps
tIDP
Pulse rate=20pps
--
800
--
ms
--
500
--
Tone Mode
Tone
Output Pin
DC Level
Sink Current
AC level
Load Resistor
Pre-emphasis
DTMF Signal
Vdc
Itl
Vdtmf
RI
twist
VDD=2.0V~5.5V
Vdtmf=0.5V
Row group RL=5KΩ
Dist.≤ -23dB
VDD=2.0~5.5 V,
Column-Row group
0.5VDD
0.2
130
5
1
--
0.7VDD V
--
--
mA
155
180 mVrms
--
--
KΩ
2
3
dB
Distortion
Minimum tone duration Time
(note 3)
Dist. RL=5KΩ
tTD Auto redial
--
-30
-23
dB
--
100
--
ms
--
91
--
ms
Minimum Intertone Pause Time
(note 3)
tITP Auto redial
--
106
--
ms
--
91
--
ms
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
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 JOINT-STOCK CO.,LTD
REV: 1.0
2001.01.15
7
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