PEB2465 SIEMENS [Siemens Semiconductor Group], PEB2465 Datasheet - Page 60

• Manufacturer Part Number: PEB2465
• Description: Four Channel Codec Filter
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Semiconductor Group
8.9
An input signal with its frequency swept between 0.3 to 3 kHz for the receive path, or 0 to
12 kHz for the transmit path, any generated output signal with other frequency than the
input frequency will stay 28 dB below the maximum input level of 0 dBm0.
Table 9
Receive
Frequency
300 Hz to 3.4 kHz
8.10
The quality of Transhybrid-Balancing is very sensitive to deviations in gain and group
delay - deviations inherent to the SICOFI-4 A/D- and D/A-converters as well as to all
external components used on a line card (SLIC, OP’s etc.)
Measurement of SICOFI-4 Transhybrid-Loss: A 0 dBm0 sine wave signal and a
frequency in the range between 300 - 3400 Hz is applied to the digital input. The resulting
analog output signal at pin
testmode “Digital Loop Back via Analog Port”. The programmable filters FRR, AR, FRX,
AX and IM are disabled, the balancing filter TH is enabled with coefficients optimized for
this configuration (
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 10
Parameter
Transhybrid Loss at 300 Hz
Transhybrid Loss at 500 Hz
Transhybrid Loss at 2500 Hz THL
Transhybrid Loss at 3000 Hz THL
Transhybrid Loss at 3400 Hz THL
The listed values for THL correspond to a typical variation of the signal amplitude
and -delay in the analog blocks.
amplitude = typ
delay
Single Frequency Distortion
Transhybrid Loss
= typ
V
0.15 dB
0.5 s
OUT
max. Input Level
0 dBm0
=
V
IN
V
).
OUT
Symbol
THL
THL
is directly connected to
300
500
2500
3000
3400
min.
27
33
29
27
27
Limit Values Unit Test Condition
60
Transmit
Frequency
0 to 12 kHz
typ.
40
45
40
35
35
Transmission Characteristics
dB
dB
dB
dB
dB
V
IN
, e.g. with the SICOFI-4
T
T
T
T
T
A
A
A
A
A
max. Input Level
0 dBm 0
= 25 C;
= 25 C;
= 25 C;
= 25 C;
= 25 C;
PEB 2465
V
V
V
V
V
DD
DD
DD
DD
DD
= 5 V
= 5 V
= 5 V
= 5 V
= 5 V
02.97