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EM91403 датащи(PDF) 12 Page - ELAN Microelectronics Corp

номер детали EM91403
подробное описание детали  TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
PDF  24 Pages
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производитель  EMC [ELAN Microelectronics Corp]
домашняя страница  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM91403 датащи(HTML) 12 Page - ELAN Microelectronics Corp

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EM91403 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
12
* This specification are subject to be changed without notice.
10.1.1997
Parameter
Sym.
Min.
Typ.
Max. Unit
Condition
ELECTRICAL CHARACTERISTIC
(Ambient temperature is 25
°C, V
DD=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz)
Keyboard debounce time
Tdb
-
20
-
ms
Key tone signal:
frequency
Fkt
-
600
-
Hz
duration
Tkt
-
30
-
ms
Pause time
Tp
-
3.6
-
sec.
Pulse to Tone waiting time
Tpt
-
3.6
-
sec.
Flash time
Tf
-
600
-
Row3B, Row4B=NR, NR
-
100
-
ms
Row3B, Row4B=NR, R-Vss
-
80
-
Row3B,Row4B=R-Vss, NR
-
300
-
Row3B,Row4B=R-Vss,R-Vss
Pulse rate
PSR
-
20
-
pps
Row1 = R-Vdd
-
10
-
Row1 = R-Vss
Make/Break ratio
MBR
-
40:60
-
%
Row2 = NR
-
33:66
-
Row2 = R-Vss
Inter-digit pause time
Tidp
-
800
-
ms
PSR = 10 pps
-
500
-
PSR = 20 pps
DTMF pin: sink current
IoL
-0.2
-
-
mA
Vdtmf = 0.5 V
DTMF signal DC level
Vdc
0.5
-
0.75
Vdd
Vdd = 2.0V ~ 5.5V
DTMF signal: ac level
Vdtmf
142
160
180
mVrms Row group
pre-emphase
Twist
1
2
3
dB
Column - Row
distortion
THD
-
-30
-23
dB
RL = 5 K
Ω
load resistance
ZL
5
-
-
K
Ω
THD
< − 23dB
Minimum tone duration
Tp
96
98
100
Minimum inter-tone pause
Titp
96
98
100
ms
Memory dialing
Melody output signal:
main tone ac level
(-23.3)
(dBm)
Vmtac
48
53
58
mVms Vdd =2.0V ~ 5.5V
Sub-tone
(-25.3)
(dBm)
Vstac
37
42
47
mVms
Vdd =2.0V ~ 5.5V
HD key release hold function
Thdrdb
-
280
-
ms
debounce time
SDO every bit time
Tbit
3.8
3.9
4.1
ms
Off-Hook delay time
Tdly
-
300
-
ms



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