MH88620BR 查看數據表（PDF） - Mitel Networks

零件编号

产品描述 (功能)

生产厂家

MH88620BR

C.O. SLIC

Mitel Networks 

MH88620BR

Preliminary Information

Loop Current

20

25

30

35

40

45

50

55

60

65

70

LCA Pin Connection

Connect 10kΩ from LCA to +5V.

Connect 16kΩ from LCA to +5V.

Connect 36kΩ from LCA to +5V.

Leave LCA open circuit

Connect 24kΩ from LCA to -5V

Connect 10kΩ from LCA to -5V

Connect 5.6kΩ from LCA to -5V

Connect 2.4kΩ from LCA to -5V

Connect 1.3kΩ from LCA to -5V

Connect 680kΩ from LCA to -5V

Connect LCA to -5V

Table 5 - Loop Current Setting

Reference Fig #

5a

5a

5a

5c

5b

5b

5b

5b

5b

5b

5d

MH88620BR

N1

R Internal

9000 Ω

N2

10 x

NETBAL

RP

N1

CP

RS

Notes:

1) The 10xZin network must be set to 10 x the desired input Zin (impedance).

2) The 10 x NETBAL network must be set to10x the desired network balance.

3) Make connection between N1 and component as short as possible.

[ ] Zin = 0.1 x

RS+

1

1/RP + (S x CP)

where S = j x w

and w = 2 x JC x f

Example:

If RS =0Ω, RP = 800Ω, CP=.5nf

Then the network balance is 800Ω in

parallel with 50nF.

Figure 4 - External Network Balance Setting

+5V

LCA

5a

2-154

R

LCA

LCA

-5V

5b

5c

Figure 5 - Loop Current Setting

LCA

-5V

5d

Share Link: