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參數(shù)資料
| 型號(hào)： | MT91600 |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 模擬傳輸電路 |
| 英文描述： | Programmable SLIC |
| 中文描述： | TELECOM-SLIC, PDSO28 |
| 封裝： | 5.30 MM, MO-150AH, SSOP-28 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 315K |
| 代理商： | MT91600 |
MT91600
Data Sheet
4
Zarlink Semiconductor Inc.
Impedance Programming
The MT91600 allows the designer to set the device’s impedance across TIP and RING, (Z
TR
), and network balance
impedance, (Z
NB
), separately with external low cost components.
For a resistive load, the impedance (Z
TR
) is set by R11 and R18. For a complex load, the impedance (Z
TR
) is set by
R11, R18, R19 & C8 (see Figure 5.)
The network balance, (Z
NB
), is set by R16, R17 & C3 (see Figure 5.)
The network balance impedance should be calculated once the 2W - 4W gain has been set.
Line Impedance
For optimum performance, the characteristic impedance of the line, (Z
o
), and the device’s impedance across TIP
and RING, (Z
TR
), should match. Therefore:
Z
o
= Z
TR
The relationship between Z
o
and the components that set Z
TR
is given by the formula:
Z
o
/ ( R1+R2) = kZ
o
/ R11
where kZ
o
= Z
LZ
Z
LZ
= R18, for a resistive load.
Z
LZ
= [R18 + (R19 // C8)], for a complex load.
The value of k can be set by the designer to be any value between 20 and 250. Three rules to ensure the correct
operation of the circuit:
(A) R18 + R19 > 50k
(B) R1 = R2.
(C) R11 > =50k
It is advisable to place these components as close as possible to the SLIC.
Network Balance Impedance
The network balance impedance, (Z
NB
), will set the transhybrid loss performance for the circuit. The balance of the
circuit is independent of the 4 - 2 Wire gain but is a function of the 2 - 4 Wire gain.
The method of setting the values for R16 and R17 is given by the formula:
R17 = [1.782 * Z
o
/ ( Z
o
+Z
NB
) * ( R13 / R12 )]
R17 + R16
[1 + R13 / R12]
where Z
NB
is the network balance impedance of the SLIC and Z
o
is the line impedance.
(R16 + R17) >= 50k
It is advisable to place these components as close as possible to the SLIC.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT91600AN | Programmable SLIC |
| MT91600AN1 | Programmable SLIC |
| MT91600ANR | Programmable SLIC |
| MT91600ANR1 | Programmable SLIC |
| MT91600 | Programmable SLIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT91600AN | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Programmable SLIC |
| MT91600AN1 | 制造商:Microsemi Corporation 功能描述:SLIC 1CH 55DB 32MA 5V 28SSOP - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:SLIC 1CH 55DB 32MA 5V 28SSOP - Rail/Tube |
| MT91600ANR | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Programmable SLIC |
| MT91600ANR1 | 制造商:Microsemi Corporation 功能描述:SLIC 1CH 55DB 32MA 5V 28SSOP - Tape and Reel |
| MT9160AE | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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