參數(shù)資料
型號: PEF2445N
英文描述: ?Multipoint Switching and Conferencing Unit - Attenuation?
中文描述: ?多點(diǎn)交換和會(huì)議股-衰減?
文件頁數(shù): 23/73頁
文件大?。?/td> 1618K
代理商: PEF2445N
PEB 2466
PEF 2466
Operational Description
Hardware Reference Manual
14
2001-02-20
Table 4
Power Dissipation
4.2
Transmission Characteristics
4.2.1
The overload point of the SICOFI
4-μC A/D converters is at 2.223 V. This is the peak
amplitude of a sine wave level of 1.572 Vrms. Higher input signal levels will be distorted.
Theoretical load capacities for A-Law and μ-Law encoded signals are defined in ITU-T
Recommendation G.711. These values correspond to the SICOFI
4-μC overload point:
Overload Point
Table 5
Maximum Signal Levels
4.2.2
0 dBm0-Levels
The analog voltage levels corresponding to a 0 dBm0 sine wave signal can be calculated
from the maximum signal levels shown in
Table 5
.
Table 6
Analog Voltage Levels Corresponding to 0 dBm0-Level
Note: Periodic PCM codes for a 1 kHz sine wave signal with 0 dBm0 level can be found
in ITU-T G.711.
No. of Channels Operating
None
1
2
3
4
Typical Power Dissipation
2.5 mW
70 mW
90 mW
110 mW
130 mW
Encoding Law
PCM Interface
Theoretical Load Capacity
(according to ITU-T G.711)
3.14 dBm0
3.17 dBm0
Analog Interface
Max. Sine Wave Level
(SICOFI
4-μC Overload Point)
A-Law
μ-Law
1.572 Vrms
Encoding Law
Analog Sine Wave Level
corresponding to 0 dBm0 PCM Level
1.572 Vrms*10^(-3.14/20) = 1.095 V rms
1.572 Vrms*10^(-3.17/20) = 1.091 V rms
A-Law
μ-Law
相關(guān)PDF資料
PDF描述
PEF24622 ?SOCRATES-4?
PEF2466-H A-Law/u-Law CODEC
PEF24901 ISDN LINE INTERFACE|BASIC|CMOS|QFP|64PIN|PLASTIC
PEF24901H ?Quad ISDN Echocancellation Circuit Digital Front-End for 4B3T Line Code?
PEF24902 ISDN Line Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PEF24470HV1.3 制造商:Rochester Electronics LLC 功能描述:- Bulk
PEF24471EV1.3 制造商:Lantiq 功能描述: 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述:
PEF24471EV1.3-G 功能描述:網(wǎng)絡(luò)控制器與處理器 IC T/E RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
PEF24471E-V12 制造商:Infineon Technologies AG 功能描述:
PEF24622 制造商:未知廠家 制造商全稱:未知廠家 功能描述:?SOCRATES-4?