AM79D2251VC datasheet(23/35 Pages) AMD

Numer części	AM79D2251VC

Szczegółowy opis	Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC)

PDF	35 Pages

Scroll/Zoom	100%

Producent	AMD [Advanced Micro Devices]

Strona internetowa	http://www.amd.com

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23 / 35 page

Am79D2251

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

-30

-40

-45

A-Law

µ-Law

35.5dB

30dB

31dB

25dB

27dB

Fundamental

Output Power

(dBm0)

Fundamental Input Power (dBm0)

123

Region

2.6

Acceptable

AM79D2251VC Arkusz danych(PDF) 23 Page - Advanced Micro Devices