HM91710A 데이터 시트보기 (PDF) - ELAN Microelectronics
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HM91710A Datasheet PDF : 19 Pages
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HM91710A/B
TONE/PULES SWITCHABLE DIALER
ELECTRICAL CHARACTERISTICS (II) (Ambient Temperature is 25oC, All voltage referenced to VSS , VDD = 2.5V,
unless otherwise noted.)
(Pulse mode specification, fosc. = 3.579545 MHz)
Parameter
Pulse output pin,SDO pin
leakage current
sink current
Pulse rate
Make/Break ratio
Pre-digit Pause
Inter-digit Pause
Sym.
Conditions
Ipoh Vpo = 2.5V
Ipol Vpo = 0.5V
fpr
TM:TB
tPDP
M/B ratio = 40:60
M/B ratio = 33:66
tIDP
Pulse rate = 10pps
Pulse rate = 20pps
Min. Typ. Max. Unit
-
-
0.1
uA
0.5
-
-
mA
-
10
-
pps
-
20
-
pps
- 40:60 -
%
- 33:66 -
%
-
40
-
ms
-
33
-
ms
-
800
-
ms
-
500
-
ms
ELECTRICAL CHARACTERISTICS (III) (Ambient Temperature is 25oC, All voltage referenced to VSS , VDD = 2.5V,
unless otherwise noted.)
(TONE mode specification, fosc. = 3.579545 MHz)
Parameter
Sym.
Conditions
Min. Typ. Max. Unit
TONE output pin
DC level
sink current
AC level
Load resistor
DTMF signal:
pre-emphasis
*distortion
Minimum tone duration
Minimum intertone
pause
Vdc
Itl
Vdtmf
Rl
VDD = 2.0V~5.5V
Vdtmf = 0.5V
Row group, RL = 10KΩ
Dist.² -23dB
0.5VDD -
0.2 -
130 155
10 -
0.7VDD
-
170
-
V
mA
mVrms
KΩ
twist VDD = 2.0~5.5V, Column-Row group 1 2
3
dB
Dist. RL = 10KΩ
- -30 -23 dB
tTD
Auto redial
tITP
Auto redial
- 98/83 -
ms
- 98/83 -
ms
* Distortion (dB) = 20 log { [(V12 + V22 + V32+...+Vn) 1/2 ] / [(VL2 + VH2) 1/2 ]}.
VL , VH : Row group and Column group signal.
V ,V ,...., V : Harmonic signal (BW = 300 Hz~ 3500 Hz).
12
n
* Actual frequency output (fosc. = 3.579545 MHz)
KEYBOARD SCANNING PIN STANDARD (Hz)
OUTPUT (Hz)
DEVIATION (%)
R1
f1
R2
f2
R3
f3
R4
f4
C1
f5
C2
f6
C3
f7
697
770
852
941
1209
1336
1477
699
766
848
948
1216
1332
1472
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
* This specification are subject to be changed without notice.
1.7.2002 9
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