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参数资料
| 型号： | PBL386212SHT |
| 厂商： | ERICSSON |
| 英文描述： | Subscriber Line Interface Circuit |
| 中文描述： | 用户线接口电路 |
| 文件页数： | 7/16页 |
| 文件大小： | 130K |
| 代理商： | PBL386212SHT |
PBL 386 21/2
7
Notes
1.
The overload level can be adjusted with the resistor R
for
higher levels e.g. min 3.1 V
and is specified at the two-
wire port with the signal source at the four-wire receive
port.
The two-wire impedance is programmable by selection of
external component values according to:
Z
TRX
= Z
T
/|G
2-4S
α
RSN
| where:
Z
TRX
= impedance between the TIPX and RINGX
terminals
Z
T
= programming network between the VTX and RSN
terminals
G
2-4S
= transmit gain, nominally = 1 (or 0.5 see pin PTG)
α
RSN
= receive current gain, nominally = 200 (current
defined as positive flowing into the receivesumm-
ing node, RSN, and when flowing from ring to tip).
Higher return loss values can be achieved by adding a
reactive component to R
, the two-wire terminating
impedance programming resistance, e.g. by dividing R
into two equal halves and connecting a capacitor from the
common point to ground.
2.
3.
4.
The overload level can be adjusted with the resistor R
OV
for higher levels e.g. min 3.1 V
and is specified at the
four-wire transmit port, VTX, with the signal source at the
two-wire port. Note that the gain from the two-wire port to
the four-wire transmit port is G
= 1 (or 0.5 see pin PTG)
Pin PTG = Open sets transmit gain to nom. 0.0dB
Pin PTG = AGND sets transmit gain to nom. -6.02 dB
Secondary protection resistors R
and resistors R
impact
the insertion loss as explained in the text, section
Transmission. The specified insertion loss is for R
= R
P
= 0.
The specified insertion loss tolerance does not include
errors caused by external components.
The level is specified at the two-wire port.
The two-wire idle noise is specified with the port
terminated in 600
(R
) and with the four-wire receive
port grounded (E
= 0; see figure 6).
The four-wire idle noise at VTX is specified with the two-
wire port terminated in 600
(R
). The noise
specification is referenced to a 600
programmed two-
wire impedance level at VTX. The four-wire receive port is
grounded (E
RX
= 0).
5.
6.
7.
8.
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相关代理商/技术参数 |
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| PBL386212SOS | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Subscriber Line Interface Circuit |
| PBL386212SOT | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Subscriber Line Interface Circuit |
| PBL386212SOTNT | 制造商:Infineon Technologies AG 功能描述:SLIC 1-CH 75dB 30mA 5V 24-Pin SSOP T/R |
| PBL38627/2SOTR2B | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述: |
| PBL38630/2QNA | 功能描述:IC LINE INTERFACE SLIC PLCC-28 RoHS:否 类别:集成电路 (IC) >> 接口 - 电信 系列:FlexiSLIC™ 产品培训模块:Lead (SnPb) Finish for COTS 产品变化通告:Product Discontinuation 06/Feb/2012 标准包装:750 系列:* |
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