TRF1400

TRF1400

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RF TELEMETRY RECEIVER

Features:

Wide VHF/UHF frequency range: 200 MHz to 450 MHz for world-wide remote control frequency compatibility
High Receiver Sensitivity: -103 dBm at 315 MHz
Accepts Baseband Data Rates from 500 Hz to 10 kHz
Manchester-Decoded and Raw Baseband Output for easy interface to serial data decoders and microcontrollers
No manual alignment when using surface acoustic wave (SAW) filters
Adjustable internal sampling clock set by external components
Requires minimum of external components

Summary: The TRF1400 is specifically designed for return-to-zero amplitude-shift keyed (RZ ASK) communications systems operating in the 200 to 450 MHz band. This device is targeted for use in automotive and home security systems, garage door openers, remote utility metering, and other low power remote control and telemetry systems.

A complete RZ ASK receiver solution on a chip, the TRF1400 requires a minimum of external components for operation. This significantly reduces the design complexity and board footprint. When used with a SAW filter, no manual alignment is required. For an even lower cost solution, the device is compatible with external LC components.

The TRF1400 includes several on-chip features that normally require additional circuitry in a receiver design. Included are two low noise amplifiers, an RF amplifier/comparator for detection and shaping of input signal, and a demodulated RZ ASK baseband TTL-level output that readily interfaces to self-synchronzing devices. Also included is on-chip Manchester decoding logic that provides a specially formatted TTL data output, synchronized with a trigger output, for easy interface to any microcontroller using Manchester-encoded data.