PSB4596 Siemens Semiconductor Group, PSB4596 Datasheet - Page 83
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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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11
11.1
A set of programmable filters is used to adapt the whole system to:
• country standards
• board designs (EMI capacitors etc.)
• data pumps
• telephone lines
Note: All these coefficients will be computed by a coefficient program. Any change in
In detail, the following filters are programmable:
• Trans-hybrid balancing (TH) filter
• Trans-hybrid pre-balancing filter
• Impedance matching (IM) filter
• Frequency response receive (FRR) filter
• Frequency response transmit (FRX) filter
• Ringer impedance
Amplification/attenuation transmit (AX) filter
Amplification/attenuation receive (AR) filter
11.2
The filter coefficients are generated by a software tool including a high-level model of
ALIS and additional user-defined or application-specific system components.
Semiconductor Group
Gain for AX filter
Gain for AGX
Gain for AR filter
Gain for AGR_R:
Gain for AGR_Z:
these computed values may cause a loss of performance or instability.
Electrical Characteristics
Programmable Filters
DC Characteristics
range 3.. -14 dB:
range -14 .. -24 dB:
range 3.5, 0 -2.5, -6
range -3 .. 14 dB:
range 14 .. 24 dB:
range 0, 3.5, 6 dB
range -3.5, 0, 2.5, 6 dB
83
step size 0.02 .. 0.05 dB
step size 0.5 dB
step size 0.02 .. 0.05 dB
step size 0.5 dB
Analog Line Interface Solution
Electrical Characteristics
PSB 4595 / PSB 4596
Data Sheet 06.98