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PCT303DW F
EATURES
Complete DAA includes:
鈥?Programmable line interface
鈥?AC termination
鈥?DC termination
鈥?Ringer impedance
鈥?Ringer threshold
鈥?86 dB dynamic range TX/RX paths
鈥?Integrated ring detector
鈥?Up to 4000 V isolation
鈥?Support for Caller ID
鈥?Low-profile SOIC packages
PRELIMINARY
鈥?Phone line interface systems
PCT303DW DATA SHEET
PCT303DW F
UNCTIONAL
D
ESCRIPTION
The PCT303DW is an integrated direct access
arrangement (DAA) that provides a programmable line
interface to meet international telephone line
requirements. Available in two 16-pin small outline
packages, it eliminates the need for an analog front end
(AFE), an isolation transformer, relays, opto-isolators,
and 2- to 4-wire hybrid. The PCT303DW dramatically
reduces the number of discrete components and cost
required to achieve compliance with international
regulatory requirements. The PCT303DW interfaces
directly to standard modem DSPs.
鈥?Low power consumption (15mW operating @3.3V)
鈥?3.3 or 5 V analog/digital power supply
鈥?Direct interface to DSPs
鈥?Integrated analog front end (AFE)
鈥?2鈥?-wire hybrid
鈥?Daisy-chaining for up to eight devices
PCT303DW A
PPLICATIONS
鈥?Modems
PCT303DW Chip Set
PCT303DW F
UNCTIONAL
B
LOCK
D
IAGRAM
MCLK
SCLK
FSYNC
SDI
SDO
FC/RGDT
RX
Digital
Interface
Hybrid
and
DC
Isolation
Interface
Isolation
Interface
Ring Detect
Control
Interface
Off-hook
Termination
FILT
FILT2
REF
DCT
VREG
VREG2
REXT
REXT2
RNG1
RNG2
QB
QE
QE2
RGDT/FSD
OFHK
MODE
RESET
PCT303D
PCT303W
PRELIMINARY
PC-TEL, Inc.
1
1789W0DOCDAT06A-0299