am79d2251 Advanced Micro Devices, am79d2251 Datasheet - Page 20

am79d2251

Manufacturer Part Number

am79d2251

Description

Dual Intelligent Subscriber Line Audio-processing Circuit Islac

Manufacturer

Advanced Micro Devices

Datasheet

1.AM79D2251.pdf (35 pages)

Current page: 20 of 35
Download datasheet (348Kb)

Attenuation Distortion

Group Delay Distortion

The attenuation of the signal in either path is nominally independent of the frequency. The deviations

from nominal attenuation will stay within the limits shown in Figure 6. The reference frequency is

1014 Hz and the signal level is –10 dBm0.

Minimum transmit attenuation at 60 Hz is 24 dB

For either transmission path, the group delay distortion is within the limits shown in

Figure 7. The minimum value of the group delay is taken as the reference. The signal level should

be –10 dBm0.

Delay (µS)

-0.125

0.125

0.6

150

420

Figure 6. Transmit and Receive Path Attenuation vs. Frequency

x x x

x x x x x

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

x x x x x

x x x x x x x x x

x x x

x x x x x x x x x

x x x

x x x x x

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

x x x x x

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

Receive path

x x x x x x x

x x x x x x x x

Figure 7. Group Delay Distortion

x x x