KA2425A
SPEECH NETWORK WITH DIALER INTERFACE
ABSOLUTE MAXIMUM RATINGS
Characteristic
V
+
Voltage
V
DD
(V
+
= 0)
MT,MS inputs
V
LR
Storage Temperature
Symbol
V
C
V
DD
V
M
V
LR
T
STG
Value
-1.0 ~ +18
-1.0 ~ +6
-1.0 ~ V
DD
+1
-1.0V~ V
+
-3.0
-65 ~ +150
(Ta = 25°C)
Value
0 ~ 10
+1.5 ~ +15
+3.3 ~ +15
-20 ~ +60
Unit
mA
V
V
°C
Unit
V
V
V
V
°C
RECOMMENDED OPERATING CONDITIONS
Characteristic
I
TXO
(Instantaneous)
V
+
(Voltage :Speech Mode
Tone Dialing Mode
Operating Temperature
Symbol
I
CC
V
+ (SM)
V
+(TM)
T
ORR
(T
a
= 25°C)
ELECTRICAL CHARACTERISTICS
Characteristic
T
X
Gain from V
S
to V
+
Gain Change
Distortion
Output Noise
R
X
V
RXO
/ V
S
R
X
Gain Change
Distortion
DTMF Driver
V
+
/ V
IN
Sidetone Level
V
RXO
/ V+
Sidetone Rejection
V
RXO
{
(Figure 4)}dB - {
V
RXO
Symbol
G
V (TX)
∆G
V (TX)
THD
TX
V
NO (TX)
G
V (RX)
∆G
V (RX)
THD
RX
G
V (MF)
G
V (ST)
Test Conditions
Min
28
Typ
29.5
-4.5
2.0
11
-15
-3.0
2.0
4.8
-28
-13
18
Max
31
-3.6
-
-
-13
-2.0
-
6.2
-
-
-
Unit
dB
dB
%
dBmc
dB
dB
%
dB
dB
SYSTEM SPECTIFICATIONS
(Refer to Fig.3 and Fig.4)
Figure (I
L
= 20mA)
I
L
= 60mA
-6.0
-
-
f = 1.0KH
Z
, I
L
= 20mA
(See Figure.4) I
L
= 60mA
-16
-5.0
-
I
L
= 20mA
I
L
= 20mA
I
L
= 60mA
I
L
= 20mA
3.2
-
-
12
RST
(Figer 3)} dB
dB
V+
V+
I
L
= 5.0mA
Tip-Ring Voltage (including polarity
guard
bridge drop of 1.4v)
(Speech Mode)
AC impedance
Speech mode (incl. C
6
,See Figure 4)
Z
ac
= (600)V +/ (V
S
- V+)
Tone Mode (including C
6
)
None : Typicals are tested or guaranteed.
Z
ac
I
L
= 20mA
I
L
= 60mA
20mA < IL , 60mA
I
L
= 10mA
V
TR
I
L
= 20mA
I
L
= 40mA
I
L
= 60mA
-
-
-
-
-
2.4
3.9
4.6
5.6
6.6
-
-
-
-
-
V
DC
-
-
-
750
300
1650
-
-
-
Ω
SAMSUNG [ SAMSUNG SEMICONDUCTOR ]
