General Description
The MICRF004 QwikRadio™ VHF receiver is a single-chip OOK (on-off keyed) receiver IC for remote wireless applications. This device is a true single-chip, “antenna-in, data-out” device. All RF and IF tuning is accomplished automatically within the IC which eliminates manual tuning production costs and results in a highly reliable, extremely low-cost solution for high-volume wireless applications.

Features
• Complete VHF receiver on a monolithic chip
• 140MHz to 200MHz frequency range
• >200 meters typical range with monopole antenna
• 2.5kb/s sweep- and 10kb/s fixed-mode data rates
• Automatic tuning, no manual adjustment
• No filters or inductors required
• Low 240µA operating supply current at 150MHz (10:1 duty cycle)
• Shutdown mode for >100:1 duty-cycle operation
• Wakeup for enabling decoders and microprocessors
• Very low RF antenna reradiation
• CMOS logic interface for standard ICs
• Extremely low external part count

Applications
• Automotive remote keyless entry
• Long range RF identification
• Remote fan and light control
• Garage door and gate openers