參數(shù)資料
型號: LXT332PE
英文描述: Line Interface
中文描述: 線路接口
文件頁數(shù): 24/32頁
文件大?。?/td> 395K
代理商: LXT332PE
LXT331
Dual T1/E1 Line Interface Unit
24
Datasheet
Figure 13. Typical LXT331 E1 120
Twisted Pair Application (Hardware Control Mode)
+5V
1:1
Rt
120
0.1
μ
F
1
μ
F
1:n
470 pF
Rt
See
INSET
for
circuit
1
1
2
1k
1k
1:1
120
1k
1k
1:n
470 pF
Rt
See
INSET
for
circuit
Rt
2
1
1
D
2.048 MHz
Clock Source
+5V
LXT331
MCLK
TRSTE
TCLK0
PMRK0
TNEG0
NMRK0
TPOS0
TPOS1
TCLK1
TNEG1
PMRK1
NMRK1
DPM1
DFM1
DPM0
DFM0
TTIP0
TRING0
RTIP0
RRING0
VCC
GND
RTIP1
RRING1
TTIP1
TRING1
MRING0
MTIP0
MRING1
MTIP1
L
L
L
T
T
T
A
L
L
L
T
T
T
A
68
μ
F
68
μ
F
+5V
Normal
High-Z
INSET
VCC
D4
D3
VCC
D2
D1
TTIPx
TRINGx
2
Refer to Table 6 for transformer specifications.
NOTES:
Typical Value. Adjust capacitor value for board parasitics to obtain
optimum return loss.
1
1. Transformer turns ratio accuracy is ± 2%.
2. Refer to Table 7 for Rt values.
3. Typical return loss, 51 kHz - 3.072 MHz band.
4. D1, D2, D3 & D4 are protection diodes (Schottky) International Rectifier: 11DQ04 or 10BQ060;
Motorola: MBR0540T1.
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