參數(shù)資料
型號： LE57D111JC
英文描述： Telecommunication IC
中文描述： 通信集成電路
文件頁數(shù)： 9/22頁
文件大?。?/td> 546K
代理商： LE57D111JC
P R E L I M I N A R Y
Le57D11 Data Sheet
9
Insertion Loss and Balance Return Signal
(See Figure 5 and Figure 6.)
Line Characteristics
Power Supply Rejection Ratio, Active Normal State
Power Dissipation
Supply Currents
Battery = – 48 V
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Gain accuracy, 4- to 2-wire
0 dBm, 1 kHz
–0.20
0
+0.20
dB
Gain accuracy, 2- to 4-wire
0 dBm, 1 kHz
–9.64
–9.54
–9.44
Gain accuracy, 4- to 2-wire
On hook
–0.35
+0.35
4
Gain accuracy over frequency
300 to 3.4 kHz
relative to 1 kHz
–0.15
+0.15
Gain tracking
+3 dBm to –55 dBm
relative to 0 dBm
–0.15
+0.15
Gain tracking
On hook
0 dBm to –37 dBm
+3 dBm to 0 dBm
–0.15
–0.35
+0.15
+0.35
Group delay
0 dBm, 1 kHz
4
μs
4, 7
Description
Test Conditions (See Note 1)
R
LDC
= 600
R
LDC
= 1930
, BAT = –42.75 V,
T
A
= 25°C
Min
Typ
Max
Unit
Note
I
L
, Short Loops, Active state
26.4
30
33.6
mA
I
L
, Long Loops, Active state
18
19
I
L
, Accuracy, Standby state
0.7I
L
I
L
1.3I
L
I
L
, Loop current, Disconnect state
VAB, Open Circuit voltage
R
L
= 0
V
BAT
= –48 V
100
μA
+38.3
+40.3
V
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
V
CC
50 Hz to 3.4 kHzV
RIPPLE
= 100
mV
rms
30
40
dB
5
V
BAT
50 Hz to 3.4 kHzV
RIPPLE
= 500 mV
PP
CAS pin to V
BAT
28
50
Effective internal resistance
85
170
255
k
4
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
On hook, Standby state (both Stdby)
40
100
mW
On hook, Active state (Active)
200
400
Off hook, Active state (Active)
R
L
= 300
, R
TMG
= 1600
1400
2000
One channel, Active/
One channel, Stdby
R
L
= 300
, R
TMG
= 1600
720
1050
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
I
CC
,
On-hook V
CC
supply current
Standby state (both Stdby)
4.4
mA
Active state, BAT = –48 V (both
active)
12.6
I
BAT
,
On-hook V
BAT
supply current
Standby state (both Stdby)
0.4
Active state, BAT = –48 V (both
active)
5.6
I
L
R
L
+
–
5K
)
VBAT 3V
T
A
25
°
C
=
,
=
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