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)： 8/22頁
文件大?。?/td> 546K
代理商： LE57D111JC
P R E L I M I N A R Y
8
Le57D11 Data Sheet
Environmental Ranges
Electrical Ranges
Note:
The operating ranges define those limits between which the functionality of the device is guaranteed.
SPECIFICATIONS
Transmission Performance
Crosstalk Between Channels
Longitudinal Capability
(See Figure 7.)
Ambient Temperature
40° to 85° C
V
CC
4.75 to 5.25 V
V
BAT
–39 to –58 V
DB1, DB2, and DAC
V
BAT
to –2 V
AGND
0 V
BGND1, BGND2 with respect to AGND
–100 to + 100 mV
20 k
minimum
Load resistance on VTX to ground
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
2-wire return loss
200 Hz to 3.4 kHz (See Figure 8)
26
dB
mV
1, 4
Analog output (VTX) impedance
3
20
4
Analog (VTX) output offset voltage
–50
+50
Overload level, 2-wire
Active state
On hook, R
LAC
= 600
0 dBm
2.5
Vpk
2a
Overload level
0.77
Vrms
2b
THD (Total Harmonic Distortion)
–64
–50
dB
5
+7 dBm
0dBm, R
LAC
= 600
–55
–40
THD, On hook
–36
dB
5
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
F = 200 Hz to 3.4 kHz
80
dB
4
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Longitudinal to metallic L-T, L-4 balance
200 Hz to 3.4 kHz, 0o C to +70o C
48
dB
4
Longitudinal signal generation 4-L
200 Hz to 3.4 kHz
40
Longitudinal current per pin (A or B)
Active state (off hook)
8.5
20
mArms
/
pin
8
Longitudinal impedance at A or B
0 to 100 Hz
C-Message, R
L
= 600
Psophometric, 600
25
Idle Channel Noise
7
12
dBrnc
4
–83
–78
dBmP
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