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DCAND OPERATING CHARACTERISTICS
(continued)
Electrical characteristicsare guaranteedover the completetemperature range,with typical load unless
otherwisespecified.Typical values are given for : V
+
= +5V,V
= -5V androom temperature= 25
o
C
Symbol
TRANSMIT FILTER TRANSFER FUNCTION (load conditions : R
L
= 560
, C
L
= 100pF)
G
AR
Absolute Gainat 2100Hz
G
HH
Gain Relative to Gain at 1700Hz
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
–
0
–
dB
Band-pass
< 390Hz
= 390Hz
= 450Hz
= 1100Hz
Band-pass or Low-pass
1100Hz to 2300Hz
3300Hz
5800Hz
> 16000Hz
–
–
–
- 0.5
- 0.5
–
–
–
–
–
–
–
–
– 3
–
–
- 30
- 35
- 35
+0.5
+0.5
–
- 15
- 35
dB
dB
dB
dB
dB
dB
dB
dB
D
AR
Group Delay (modem transmission)
Main Channel : from 380 to 460Hz
Back Channel : from 1100 to 2300Hz
ATTENUATOR TRANSFER FUNCTION
90
1.04
–
–
110
1.08
μ
s
ms
A
TT
R
AT
Absolute Gainfor 0dB Programmed
Attenuation Relative toProgrammed Value
Attenuation for Programmed Value =
∞
Relative Attenuation between two Consecutive Steps
0.3
- 0.5
70
0.8
0
-
-
-
0.3
+0.5
dB
dB
dB
dB
R
LT
1.2
TRANSMIT GENERAL CHARACTERISTICS
Modem Amplitude (Att = 0dB)
390Hz
450Hz
1300Hz
2100Hz
+3.5
+3.5
+3.5
+3.5
–
–
–
–
+4.5
+4.5
+4.5
+4.5
dBm
dBm
dBm
dBm
DTMF Amplitude (Att = 0dB)
- Low Frequency Group
- Low Frequency Group versus Low Frequency Group
Psophometric Noise
RECEIVE FILTER TRANSFER FUNCTION
Absolute Gainat 1100Hz - Main Channel
(0dB programmed)
G
RR
Gain Relative to the Gain at 1300Hz
(0dB programmed)
- 3
+1.5
–
–
–
–
- 1.5
+2.5
250
dBm
dB
μ
V
G
AR
– 0.5
–
+ 0.5
dB
< 150Hz
150Hz to 450Hz
1300Hz
2100Hz
2300Hz
5500Hz to 10000Hz
> 10000Hz
–
–
– 0.5
1.1
–
–
–
0.5
–
–
–
1.8
–
–
–
–
– 60
– 50
0.5
2.3
2.7
– 50
– 60
+ 0.5
dB
dB
dB
dB
dB
dB
dB
dB
G
AR
Absolute Gainat 420Hz
(back channel - narrow band) (0dB programmed)
Gain Relative to Gain at 420Hz (0dB programmed)
G
R R
< 150Hz
380Hz
400Hz to 440Hz
460Hz
1100Hz to 10000Hz
> 10000Hz
–
–
– 0.5
–
–
–
– 0.5
–
–
–
–
–
–
–
– 50
+ 0.5
+ 0.5
+ 0.5
– 50
– 60
+ 0.5
dB
dB
dB
dB
dB
dB
dB
G
AR
Absolute Gainat 425Hz (tone detection or back
channel wide band) (0dB programmed)
Gain Relative to Gain at 425Hz (0dB programmed)
G
R R
< 112Hz
275Hz
300Hz to 525Hz
575Hz
1375Hz to 10000Hz
> 10000Hz
–
–
– 0.5
–
–
–
–
–
–
–
–
–
–
–
– 50
+ 0.5
+ 0.5
+ 0.5
– 50
– 60
300
dB
dB
dB
dB
dB
dB
μ
V
Psophometric Noise
7
TS7514
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