參數(shù)資料
型號: MC33121FN
廠商: MOTOROLA INC
元件分類: 模擬傳輸電路
英文描述: LOW VOLTAGE SUBSCRIBER LOOP INTERFACE CIRCUIT
中文描述: TELECOM-SLIC, PQCC28
封裝: PLASTIC, LCC-28
文件頁數(shù): 11/32頁
文件大?。?/td> 570K
代理商: MC33121FN
MC33121
MOTOROLA
11
Figure 23. IC Power Dissipation versus
Loop Resistance and RRF
Figure 24. Transistor Power Dissipation
versus Loop Resistance and RRF
Figure 25. Maximum Longitudinal Current
versus Loop Current
Figure 26. Maximum Longitudinal Current
versus CT, RT and Frequency
0.7
0
0.6
0.5
0.2
400
600
800
RL, LOOP RESISTANCE (
)
0.4
0
0.3
0.2
0
200
400
600
800
RL, LOOP RESISTANCE (
)
50
20
40
30
20
0
30
40
IL, LOOP CURRENT (mA)
20
16
12
8.0
0
4.0
RRF = 3900
VEE = –28 V
TA = 25
°
C
VDD = +5.0 V
VEE = –28 V
TA = 25
°
C
RP = 100
RRF = 3.9 k
0.4
0.3
I
0.1
P
6.2 k
10 k
10
–42 V
VEE
–24 V
f = 60 Hz AND 1.0 kHz
CT > 0.1
μ
F FOR 1.0 kHz
CT > 1.0
μ
F FOR 60 Hz
RS = 5.1 k
0.1
1.0
10
CT (
μ
F)
VEE = –28 V
TA = 25
°
C
IL = 20 mA
RS = 9.1 k
RT = 200 k
f = 1.0 kHz
M
200
RRF = 6200
RRF = 10 k
RS = 11 k
CT
ST2
RT
RT = 20 k
f = 1.0 kHz
RT = 20 k
f = 60 Hz
RT = 200 k
f = 60 Hz
M
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