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參數資料
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: 8/32頁
文件大小: 570K
代理商: MC33121FN
MC33121
8
MOTOROLA
Figure 5. Loop Current versus Loop
Resistance and RRF
Figure 6. Loop Current versus Loop
Resistance and RRF
Figure 7. Loop Current versus Loop
Resistance and RRF
Figure 8. Off–Hook to On–Hook
Threshold versus RRF
Figure 9. On–Hook to Off–Hook Threshold versus RS
Figure 10. IDD versus Loop Current
50
0
40
30
20
10
400
800
1200
1600
2000
I
RL, LOOP RESISTANCE (
)
50
0
40
30
20
10
200
400
600
800
1000
I
RL, LOOP RESISTANCE (
)
50
0
40
30
20
10
200
400
600
800
1000
I
RL, LOOP RESISTANCE (
)
15
3.0
13
11
9.0
5.0
4.0
5.0
6.0
RRF (k
)
7.0
10
5.0
5.0
4.0
3.0
2.0
1.0
6.0
7.0
RS, SENSE RESISTANCE (k
)
8.0
9.0
12
15
20
10
5.0
30
40
45
IL, LOOP CURRENT (mA)
7.0
8.0
9.0
10
11
L
)
L
)
D
I
,
RRF = 3900
8200
7500
6200
4700
5100
10 k
RS = 9.1 k
VEE = –42 V
TA = 25
°
C
8200
7500
6200
4700
5100
10 k
RS = 9.1 k
VEE = –28 V
TA = 25
°
C
RRF = 3900
RRF = 3900
8200
7500
6200
4700
5100
10 k
RS = 9.1 k
VEE = –24 V
TA = 25
°
C
–42 V
VEE
–24 V
5.1 k
RS
11 k
4.5 V
VDD
5.5 V
TA = 25
°
C
–42 V
VEE
–24 V
TA = 25
°
C
VDD = +5.0 V
RRF = 4700
3.9 k
RRF
10 k
4.5 V
VDD
5.5 V
TA = 25
°
C
VEE = –24 V
VEE = –42 V
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