參數(shù)資料
型號(hào): AM79D2251JC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 編解碼器
英文描述: Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC)
中文描述: PCM CODEC, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 23/35頁
文件大?。?/td> 410K
代理商: AM79D2251JC
Am79D2251
23
Total Distortion Including Quantizing Distortion
The signal to total distortion ratio will exceed the limits shown in Figure 10 for either path when the
input signal is a sine wave signal of frequency 1014 Hz.
Figure 10. Total Distortion with Tone Input, Both Paths
Overload Compression
Figure 11 shows the acceptable region of operation for input signal levels above the reference input
power (0 dBm0). The conditions for this figure are:
(1) 1 dB < GX
+12 dB; (2)
12 dB
GR <
1 dB; (3) Digital voice output connected to digital voice
input; and (4) measurement analog to analog.
Figure 11. A/A Overload Compression
Input Level (dBm0)
Signal-to-Total
Distortion (dB)
Dual ISLAC Specification
0
-30
-40
-45
A
A-Law μ-Law
A 35.5dB 35.5dB
B 35.5dB 35.5dB
C 30dB 31dB
D 25dB 27dB
B
C
D
Fundamental
Output Power
(dBm0)
Fundamental Input Power (dBm0)
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Region
2.6
Acceptable
相關(guān)PDF資料
PDF描述
AM79D2251VC Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC)
AM79M535 Metering Subscriber Line Interface Circuit
AM79M576A-1 Metering Subscriber Line Interface Circuit
AM79M576A-1JC Metering Subscriber Line Interface Circuit
AM79M576A Metering Subscriber Line Interface Circuit
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM79D2251VC 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC)
AM79H1000 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
AM79H1000R 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fiber-Optic Receiver
AM79H1000T 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fiber-Optic Transmitter
AM79H1068-125 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fiber-Optic Transmitter