參數(shù)資料
型號(hào): PBL38773/1SO
廠商: INFINEON TECHNOLOGIES AG
元件分類: 模擬傳輸電路
英文描述: TELECOM-SLIC, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 32/64頁
文件大?。?/td> 1052K
代理商: PBL38773/1SO
Ringing FlexiSLIC
PBL 38773/1
Transmission
Data Sheet
38
DS1, 2003-06-18
the PBL 38773/1 SLIC by connecting the pulse-metering source through coupling
capacitor (
C
TTX) and resistor (RTTX) to the RSN node. The capacitor in series isolates the
RSN input from any DC voltage that may be superimposed on the metering signal. The
signal level of metering has to be included when optimizing talk battery
V
TB. It is possible
to mix speech and metering up to 1.7 V
Peak using the AOV function.
The metering signal gain can be calculated from the equation:
[14]
where:
V
TRTTX
Is the desired metering voltage between the TIP and RING terminals.
V
RTTX
Is the metering voltage injected via the resistor
R
TTX.
Z
LTTX
Is the line impedance seen by the 12 or 16 kHz metering signal, typically
200
.
Z
TTX
Sets the metering gain
G
2-4S
Is the transmit gain through the SLIC (0.5).
G
42TTX
V
TRTTX
V
RTTX
------------------
Z
T
Z
TTX
------------
1
G
24S
----------------
×
Z
LTTX
Z
T
α
RSN
G
×
24S
------------------------------------
Z
LTTX
2
R
F
++
--------------------------------------------------------------------------
×
==
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