PSB4596 Siemens Semiconductor Group, PSB4596 Datasheet - Page 100
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PSB4596
Manufacturer Part Number
PSB4596
Description
Analog Line Interface Solution ALIS
Manufacturer
Siemens Semiconductor Group
Datasheet
1.PSB4596.pdf
(104 pages)
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300 Hz
500 Hz
2500 Hz
3000 Hz
3400 Hz
12.4.10 Trans-hybrid Loss
The quality of trans-hybrid balancing is very sensitive to deviations in gain and group
delay. These deviations are inherent in ALIS A/D and D/A converters as well as in all the
external components used.
Measurement of ALIS trans-hybrid loss: A 0dBm0 sine wave signal and a frequency in
the range between 300 - 3400 Hz is applied to the digital input. The resulting analog
output signal VOUT at TIP RING is received and canceled by the TH filter. The
programmable filters FRR, AR, FRX, AX and IM and the balancing filter TH are enabled
with optimized coefficients.
The resulting echo measured at the digital output is at least X dB below the level of the
digital input signal as shown in the table below. (Filter coefficients will be provided.)
Table 30: Trans-hybrid Loss
The listed values for THL correspond to a typical variation of the signal amplitude and
delay in the analog blocks.
Semiconductor Group
Trans-hybrid loss at
Amplitude
Delay
Parameter
=typ. ±0.8 dB
=typ. ±0.5 µs
THL 300
THL 500
THL2500
THL3000
THL3400
Symbol
min
33
29
27
27
27
Values
100
Limit
Electrical Performance Characteristic
typ
40
45
40
35
35
Analog Line Interface Solution
Unit
dB
dB
dB
dB
dB
TA=25° C; VDDA=4.25V;
PSB 4595 / PSB 4596
Test condition
Data Sheet 06.98