The MAX7058 UHF transmitter alternately transmits
ASK/OOK data at 315MHz or 390MHz using a single
crystal. The MAX7058 has internal tuning capacitors at
the output of the power amplifier that can be programmed
for matching to the antenna or load. The
MAX7058 can transmit at a data rate up to 100kbps
NRZ (50kbps Manchester coded). Typical transmitted
power into a 50Ω load is +10dBm. The MAX7058 operates
from +2.1V to +3.6V and draws under 8.0mA of
current. The standby current is less than 1μA at room
temperature. A 15MHz crystal is used as the reference
for 315MHz and 390MHz operation by selecting synthesizer-
divide ratios of 21 and 26, respectively.
The MAX7058 is available in a 4mm x 4mm, 24-pin thin
QFN package and is specified to operate in the -40°C
to +125°C automotive temperature range.
Applications
Garage Door Openers
RF Remote Controls
Home Automation
Wireless Sensors
Security Systems
Automotive