參數(shù)資料
型號： LE79555-1VC
英文描述： Telecommunication IC
中文描述： 通信集成電路
文件頁數(shù)： 8/16頁
文件大?。?/td> 411K
代理商： LE79555-1VC
8
Le79555 Data Sheet
ELECTRICAL CHARACTERISTICS
(continued)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Line Characteristics
I
L
, Short Loops, Active state
I
L
, Long Loops, Active state
I
L
, Accuracy, Standby state
R
LDC
= 600
R
LDC
= 2010
, VBAT =
–
50 V
3 V
–
R
L
400
+
22.5
20
16
24.5
22.5
26.5
mA
Constant-current region
Active, A and B to ground
VDC = |VAB| /20
Ri = 300 to 1500
V
BAT
= V
BAT1
, V
BAT2
=
–
50 V
R
L
= 0
B to GND
RA to BAT = 7 k
, RB to GND = 100
18
30
75
I
L
LIM
VDC Accuracy
120
0.057
mA
0.053
0.055
9
VAB, Open Circuit voltage
I
A
, Leakage, Tip Open state
I
B
, Current, Tip Open state
V
A
, Active
Power Supply Rejection Ratio
V
CC
42.75
44
V
μA
mA
V
100
56
15
–
7.5
30
–
5
4
50 Hz to 3.4 kHz
(V
RIPPLE
= 100 mVrms)
50 Hz to 3.4 kHz
off-hook constant current
(V
RIPPLE
= 500 mVpp)
CAS pin to V
BAT
30
40
dB
5
V
BAT
28
50
Effective internal resistance
Power Dissipation
On hook, Standby state
On hook, Active state
Off hook, Standby state
Off hook, Active state
Supply Currents
I
CC
,
On-hook V
CC
supply current
I
BAT
,
On-hook V
BAT
supply current + V
REG
supply current
RFI Rejection
RFI rejection
Receive Summing Node (RSN)
RSN DC voltage
RSN impedance
Logic Inputs (C3
–
C1 and D2
–
D1)
V
IH
, Input High voltage (except C3)
V
IH
, C3
V
IL
, Input Low voltage
I
IH
, Input High current
I
IL
, Input Low current
Logic Output (DET)
V
OL
, Output Low voltage
V
OH
, Output High voltage
85
170
255
k
4
45
130
860
230
60
170
1200
320
mW
R
L
= 600
R
L
= 600
Standby state
Active state
Standby state
Active state
2.3
4.25
0.65
2.0
3.2
6.0
0.9
3.0
mA
100 kHz to 30 MHz, (See Figure F)
1.0
mVrms
4
I
RSN
= 0 mA
200 Hz to 3.4 kHz
0
V
4
10
20
2.0
2.5
V
0.8
40
–
75
–
400
μA
I
OUT
= 0.3 mA, 15 k
to V
CC
I
OUT
=
–
0.1 mA, 15 k
to V
CC
0.40
V
2.4
I
L
BAT
T
A
25
°
C
=
=
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