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 Outputs for Easy Interface to Serial Data Decoders and Microcontrollers
` TRF (Tuned Radio Frequency) Design Eliminates Local Oscillator (No Emissions) and Reduces Many Government Type Approvals (Including FCC)
` Adjustable Internal Sampling Clock Set By External Components
` Internal Amplifier and Comparator for Amplification and Shaping of Low-Level Input Signals With Average-Detecting Autobias Adaptive Threshold Circuitry for Improved Sensitivity
` Minimum External Component Count and Surface-Mount Packaging for Extremely Small Circuit Footprint Typically Replaces More Than 40 Components in an Equivalent Discrete Solution
` No Manual Alignment When Using SAW Filters
` Advanced Submicron BiCMOS Process Technology for Minimum Power ConsumptionPinout
SpecificationsSupply voltage range, AVCC, DVCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.6 to 6 V
Input voltage range, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 to 6 V
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180 mW
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 85°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65°C to 150°C
ESD protection, all terminals: human body model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV
machine model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 V
JEDEC latchup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mA or 11 V
DescriptionThe TRF1400 VHF/UHF RZ ASK remote control receiver is specifically designed for RZ ASK (return-to-zero amplitude-shift keyed) commu- nications systems operating in the 200-MHz to 450-MHz band. This TRF1400 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 only a minimum of external components for operation. This significantly reduces the complexity and footprint of new Ndesigns compared with current discrete receiver designs. The TRF1400 requires no manual alignment when using external SAW (surface acoustic wave) filters. For a lower-cost solution, the device is also compatible with external LC components.
The TRF1400 also includes several on-chip features that normally require additional circuitry in a receiver system design. These include two low-noise front-end amplifiers, an RF amplifier/comparator for detection and shaping of input signals, and a demodulated RZ ASK baseband TTL-level output that readily interfaces to self-synchronizing devices. Also included is on-chip Manchester decoding logic of TRF1400 that provides a specially formatted TTL data output, synchronized with a trigger output, for easy interface to any microcontroller using Manchester-encoded data.
TRF1400 Data Sheet
