PSB4596 Siemens Semiconductor Group, PSB4596 Datasheet - Page 7
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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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1
The PSB 4595 and PSB 4596 two-chip solution forms the complete front end of a modem
or fax machine. This Analog Line Interface Solution (ALIS) consists of a DAA, a codec
and a hybrid circuit, and bridges the gap between the phone line and the data pump. The
analog PSB 4595 is manufactured in low-power BiCMOS technology and the digital PSB
4596 in CMOS technology. The ALIS concept is a fully programmable modem front end
which allows a single design for the worldwide market:
• Adaptation to specific countries and applications is achieved by downloading
• Isolation is achieved by a digital capacitor interface, without a transformer; making the
• Thanks to an advanced digital-filter concept in combination with the programmable
electronic DAA, ALIS provides both excellent transmission performance and high
adaptability. This second-generation digital filter concept also allows maximum
autonomy between the various filter blocks. This performance makes ALIS suitable for
V.34+ and V.90 modem applications.
A minimum number of external components is required to complete the functional range
of ALIS. Its internal precision is based on a very accurate band-gap reference. The
frequency behavior is determined largely by digital filters which exhibit no fluctuations.
As a result of the ADC and DAC concepts, its linearity is limited only by second-order
parasitic effects.
The ALIS chip set can be easily adapted and connected to various modem data pumps
or to host-based modem solutions. The flexible digital interface of ALIS allows easy
programming via the modem data pump or a controller.
Siemens offers a range of reference and evaluation tools for the ALIS chip set. For
appropriate tools, please contact your nearest Siemens representative.
Semiconductor Group
appropriate coefficient sets.
ALIS particularly suitable for designing PCMCIA modems.
Overview
7
Analog Line Interface Solution
PSB 4595 / PSB 4596
Data Sheet 06.98
Overview