AM79Q4457J ETC1 [List of Unclassifed Manufacturers], AM79Q4457J Datasheet - Page 14

• Manufacturer Part Number: AM79Q4457J
• Description: Quad Subscriber Line Audio Processing Circuit-Non-Programmable (QSLAC-NP) Devices
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

Attenuation Distortion
If a capacitive coupling network is used in series with either the transmit input or the receive output of the part, that
network must have a corner frequency of less than 20 Hz to meet the template in Figure 1. If the corner frequency
is above 20 Hz, the loss in the coupling network must be taken into account.
14
Attenuation (dB)
– 0.125
0.125
1
0
2
200
300
Transmit only
Transmit curve 1.6 dB
Receive curve 1 dB
Figure 1. Attenuation Distortion
Am79Q4457/5457 Data Sheet
QSLAC-NP Device Specification
Frequency (Hz)
3000
3400
0.75 dB
20013A-006