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參數資料
| 型號： | LE79R251JC |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成電路 |
| 文件頁數： | 12/22頁 |
| 文件大小： | 533K |
| 代理商： | LE79R251JC |
P R E L I M I N A R Y
12
Le79R251 ISLIC Data Sheet
Relay Driver Specifications
Figure 1.
Relay Drivers
A. Relay Driver Configuration
B. Ring Relay
Transmission Specifications
20
ILG output offset
–3
0
3
μA
No.
Item
Condition
Min
Typ
Max
Unit
Note
1
On Voltage
25 mA/relay sink
40 mA/ relay sink
0.4
0.8
0.5
1.0
V
2
2
R2,R3 Off Leakage
R2,R3 = BGND
RYE = VBH
0
100
μA
3
Zener Break Over, R1
Iz = 100 μA
9
9.5
10.5
V
4
Zener On Voltage, R1
Iz = 30 mA
8.0
8.8
9.5
No.
Item
Condition
Min
Typ
Max
Unit
Note
1
RSN input impedance
f = 300 to 3400 Hz
1
10
2
2
VTX output impedance
3
20
3
Max, AC + DC loop current
Active High Battery, Active Low
Battery, Active Boosted Battery
70
mA
2
4
Input impedance, A or B to GND
Active mode
70
135
5
2-4 wire gain
–10 dBm, 1 kHz, 0 to 70°C
T
A
= –40°C to 85°C
–14.13
–14.18
–13.98
–13.98
–13.83
–13.78
dB
2
6
2-4 wire gain variation with
frequency
300 to 3400 Hz, relative to 1 kHz
T
A
=–40°C to 85°C
–0.1
–0.15
+0.1
+0.15
2
7
2-4 wire gain tracking
+3 dBm to –55 dBm
Reference: –10 dBm
T
A
= –40 to 85°C
–0.1
–0.15
0
0
+0.1
+0.15
5
2, 5
8
4-2 wire gain
–10 dBm, 1 kHz
T
A
= –40°C to 85°C
–0.15
–0.2
0
0
+0.15
+0.2
2
9
4-2 wire gain variation with
frequency
300 to 3400 Hz, relative to 1 kHz
–0.1
+0.1
10
4-2 wire gain tracking
+3 dBm to –55 dBm
Reference: –10 dBm
–0.1
+0.1
2, 5
No.
Item
Condition
Min
Typ
Max
Unit
Note
R2
RYE
R3
BGND
R1
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