參數(shù)資料
型號(hào): SC91710A
廠商: Electronic Theatre Controls, Inc.
英文描述: TONE / PULSE SWITCHABLE DIALER WITH HANDFREE FUNCTION
中文描述: 音頻/脈沖開(kāi)關(guān)的撥號(hào)器帶免提功能
文件頁(yè)數(shù): 4/18頁(yè)
文件大小: 297K
代理商: SC91710A
Silan
Semiconductors
SC91710A/B
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2001-11-13
4
(continued)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
k
mA
HFI pin input resistor
Rhfi
V
DD
=2.5
--
200
--
HFO pin drive current
Ihdoh
Vhfo=2.0V
0.5
--
--
HFO pin sink current
Ihdol
Vhfo=2.5V
0.5
--
--
mA
Pulse Mode
Pulse Output Pin Leakage Current
Ipoh
Vpo=2.5V
0.1
--
--
μ
A
mA
Pulse Output Pin Sink Current
Ipol
Vpo=0.5V
0.5
--
--
--
10
--
Pulse Rate
fpr
--
20
--
pps
--
40:60
--
Make/Break Ratio
t
M
t
B
--
33:66
--
%
M/B ratio=40:60
--
40
--
Pre-digit Pause
t
PDP
M/B ratio=33:66
--
33
--
ms
Pulse rate=10pps
--
800
--
Inter-digit Pause
t
IDP
Pulse rate=20pps
--
500
--
ms
Tone Mode
DC Level
Vdc
V
DD
=2.0V~5.5V
0.5V
DD
--
0.7V
DD
V
Sink Current
Itl
Vdtmf=0.5V
0.2
--
--
mA
AC level
Vdtmf
Row group
Dist.
-23dB
V
DD
=2.0~5.5 V,
Column-Row group
R
L
=10K
Auto redial
R
L
=10K
130
155
170
mVrms
K
Tone
Output Pin
Load Resistor
RI
10
--
--
Pre-emphasis
twist
1
2
3
dB
DTMF Signal
Distortion(note 2)
Dist.
--
-30
-23
dB
Minimum tone duration Time
t
TD
--
98/83
--
ms
Minimum Intertone Pause Time
t
ITP
Auto redial
--
98/83
--
ms
Note: 1. Vn: Input voltage of any keyboard scanning pin (Row group, Column group)
2
Distortion (dB) = 20log
{[
V
12
+V
22
+V
32
+…Vn
2
)
1/2
]
/
[
(V
L2
+V
H2
)
1/2
]}
V
L
,V
H
: Row group and Column group signal , V1
V2…
Vn: Harmonic signal (BW = 300Hz~3500Hz
ACTUAL FREQUENCY OUTPUT
(fosc=3.579545MHz)
Keyboard Scanning Pin
R1
R2
R3
R4
C1
C2
C3
Standard(Hz)
697
770
852
941
1209
1336
1477
Output
699
766
848
948
1216
1332
1472
Deviation(%)
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
f1
f2
f3
f4
f5
f6
f7
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