STLC3085 Datasheet, PDF (1/28 Pages) STMicroelectronics – Integrated Pots Interface for Home Access Gateway and WLL

STLC3085
Integrated Pots Interface
for Home Access Gateway and WLL
Preliminary Data
Features
■ Monochip SLIC optimised for WLL & VoIP
applications
■ Implement all key features of the borsht
function
■ Single supply (4.5 to 12V)
■ Built in DC/DC Converter controller
■ Soft battery reversal with programmable
transition time
■ On-hook transmission
■ Programmable off-hook detector threshold
■ Integrated ringing
■ Integrated ring trip
■ Parallel control interface (3.3V logic level)
■ Programmable constant current feed
■ Surface mount package
■ Integrated thermal protection
■ Dual gain value option
■ Automatic recognition flyback and buckboost
configuration
■ BCDIIIS 90V technology
■ -40 to +85°C operating range
Description
The STLC3085 is a SLIC device specifically
designed for WLL (Wireless Local Loop), and
ISDN Terminal Adaptors and VoIP applications.
One of the distinctive characteristic of this device
TQFP44
is the ability to operate with a single supply
voltage (from +4.5V to +12V) and self generate
the negative battery by means of an on chip DC/
DC converter controller that drives an external
MOS switch.
The battery level is properly adjusted depending
on the operating mode. A useful characteristic for
these applications is the integrated ringing
generator.
The control interface is a parallel type with open
drain output and 3.3V logic levels. Constant
current feed can be set from 20mA to 25mA.
Off-hook detection threshold is programmable
from 5mA to 9mA.
The device, developed in BCDIIIS technology
(90V process), operates in the extended
temperature range and integrates a thermal
protection that sets the device in power down
when Tj exceeds 140°C..
Order codes
Part number
E-STLC3085 (*)
Temp range, °C
-40 to 85
Package
TQFP44
Packing
Tube
(*) ECOPACK® (see Section 5)
February 2006
Rev 1
1/28
www.st.com
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