SC91710A(2001) Просмотр технического описания (PDF) - Silan Microelectronics
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Компоненты Описание
производитель
SC91710A Datasheet PDF : 18 Pages
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Silan
Semiconductors
SC91710A/B
(continued)
Parameter
HFI pin input resistor
HFO pin drive current
Symbol
Conditions
Rhfi VDD=2.5
Ihdoh Vhfo=2.0V
Min
Typ
Max Unit
--
200
--
kΩ
0.5
--
--
mA
HFO pin sink current
Ihdol Vhfo=2.5V
0.5
--
--
mA
Pulse Mode
Pulse Output Pin Leakage Current
Pulse Output Pin Sink Current
Ipoh
Ipol
Vpo=2.5V
Vpo=0.5V
0.1
--
0.5
--
--
µA
--
mA
Pulse Rate
Make/Break Ratio
fpr
tM tB
--
10
--
pps
--
20
--
--
40:60
--
%
--
33:66
--
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
DC Level
Vdc VDD=2.0V~5.5V
0.5VDD
Tone
Sink Current
Itl Vdtmf=0.5V
0.2
Output Pin AC level
Vdtmf Row group RL=10KΩ
130
Load Resistor
RI Dist.≤ -23dB
10
VDD=2.0~5.5 V,
Pre-emphasis
twist
1
DTMF Signal
Column-Row group
Distortion(note 2)
Dist. RL=10KΩ
--
Minimum tone duration Time
tTD Auto redial
--
Minimum Intertone Pause Time
tITP Auto redial
--
Note: 1. Vn: Input voltage of any keyboard scanning pin (Row group, Column group)
--
0.7VDD V
--
--
mA
155
170 mVrms
--
--
KΩ
2
3
dB
-30
-23
dB
98/83
--
ms
98/83
--
ms
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: 2.0
2001-11-13
4
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