CF45538NSRG4 Datasheet, PDF (4/19 Pages) Texas Instruments – TIRIS RF-Module IC for Automotive

Reference Guide
SCBU036 – December 1996
TIRIS RF-Module IC for Automotive
1 Overview
RI-RFM-006A is a CMOS-technology based RF-module IC which integrates all transmitter-receiver
functions required for constructing a TIRIS Read-Write System into one single chip.
RI-RFM-006A consists of a transmitter signal control logic which generates signals for transmission and
for sending the data you wrote to a remote TIRIS transponder, and a receiver amplifies and demodulates
frequency shift keyed (FSK) signals received from this transponder.
Therefore, RI-RFM-006A is beneficially usable for constructing, in particular, a compact TIRIS Read- Write
System at a reduced cost. Furthermore, demodulation of the FSK signals received in its receiver from a
remote transponder is entirely digitized; this completely eliminates the need of regulations and lessens the
number of required external parts, thus enhancing the operational reliability of the system.
2 Features
The TIRIS RF-Module IC for Automotive Application, RI-RFM-006A, provides the following features
amongst others:
• It incorporates a transmitter circuit with power selector and an open drain transmission power
predriver.
• Also incorporated are a receiver signal amplifier and a digitized FSK signal demodulator.
• I/O specifications: Conform to TIRIS standard RF-module specifications, with available signals of
TXCT–, RXDT–⁽¹⁾ and RXCK only.
• Operating supply voltage: 4.5 V to 5.5 V
• Operating temperature range: –40°C to 85°C
• Package: 16-pin SO package
• Structure: CMOS process
(1) _{For RXDT– signals, this RF-module has a reverse polarity in relation to TIRIS standard RF-modules. See the section “Description of}
Pins” for more information.
3 TIRIS™ System Configuration (Schematic Diagram)
TIRIS Read-Write System
Controller
TIRIS RF-module
Serial
transmission
RI45538NS
Transmitter-receiver
Antenna
FSK
TIRIS transponder
ASK
4
TIRIS RF-Module IC for Automotive
SCBU036 – December 1996
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