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