EM91810B EMC [ELAN Microelectronics Corp], EM91810B Datasheet - Page 9

• Manufacturer Part Number: EM91810B
• Description: TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
• Manufacturer: EMC [ELAN Microelectronics Corp]

ELECTRICAL CHARACTERISTICS
unless otherwise noted
(Pulse mode specification, fosc. = 3.579545 MHz)
ELECTRICAL CHARACTERISTICS
unless otherwise noted
(TONE mode specification, fosc. = 3.579545 MHz)
* Distortion (dB) = 20 log { [(V
* Actual frequency output (fosc. = 3.579545 MHz)
* This specification are subject to be changed without notice.
Pulse output pin,SDO pin
Pulse rate
Make/Break ratio
Pre-digit Pause
Inter-digit Pause
TONE output pin
DTMF signal:
Minimum tone duration
Minimum intertone
pause
V
V
L
1
,V
, V
Parameter
Parameter
DC level
sink current
AC level
Load resistor
pre-emphasis
*distortion
2
H
,...., V
KEYBOARD SCANNING PIN
: Row group and Column group signal.
leakage current
sink current
n
R1
R2
R3
R4
C1
C2
C3
: Harmonic signal (BW = 300 Hz~ 3500 Hz).
.
.
)
)
1
2
Vdc
Itl
Vdtmf
Rl
twist
Dist.
t
t
Sym.
f1
f2
f3
f4
f5
f6
f7
TD
ITP
+ V
Sym.
Ipoh
Ipol
fpr
TM:TB
t
t
PDP
IDP
2
2
+ V
V
Vdtmf = 0.5V
Row group, RL = 10K
Dist. -23dB
V
RL = 10K
Auto redial
Auto redial
3
2
+...+V
DD
DD
Vpo = 2.5V
Vpo = 0.5V
M/B ratio = 40:60
M/B ratio = 33:66
Pulse rate = 10pps
Pulse rate = 20pps
= 2.0V~5.5V
= 2.0~5.5V, Column-Row group
STANDARD (Hz)
(II) (Ambient Temperature is 25 C, All voltage referenced to V
(III) (Ambient Temperature is 25 C, All voltage referenced to V
Conditions
Conditions
n
)
1/2
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
1209
1336
1477
] / [(V
697
770
852
941
L
2
+ V
H
2
)
1/2
]}.
OUTPUT (Hz)
1216
1332
1472
699
766
848
948
Min.
0.5
Min.
-
-
-
-
-
-
-
-
0.5V
-
130
0.2
10
1
-
-
-
DD
40:60
33:66
Typ.
800
500
98/83
10
20
40
33
Typ.
155
-30
98/83
-
-
2
-
-
-
DEVIATION (%)
Max.
0.7V
0.1
Max.
170
-23
-
-
-
-
-
-
-
-
-
-
3
-
-
-
+0.28
+0.74
+0.57
DD
-0.52
-0.47
-0.30
-0.34
10.1.1997
EM91810A/B
SS
SS
, V
, V
V
mA
mVrms
K
dB
dB
ms
ms
Unit
Unit
DD
DD
uA
mA
pps
pps
%
%
ms
ms
ms
ms
= 2.5V,
= 2.5V,
9