DESCRIPTION 

The SYN4455 is a high performance, easy to use, single chip ASK transmitter IC for remote wireless application in the 300 to 450MHz frequency band. In terms of power, the SYN4455 is capable of delivering +13dBm into a 50Ω load. In terms of operating voltage, the SYN4455 operates from 1.8V to 3.6V. and will work with most batteries to the end of their useful limits.

The SYN4455 is easy to use. It requires a reference frequency (RF carrier frequency divided by 32 times) generated from a crystal with a few additional external parts to create a complete versatile transmitter.

The SYN4455 operates with ASK/OOK (Amplitude Shift Keying/On-Off Keyed) UHF receiver types from wide-band super-regenerative radios to narrow-band, high performance super-heterodyne receivers. The SYN4455’s maximum ASK data rate is 10kbps. 

For enhanced power saving, SYN4455 includes power managing function, which enables transmitter activated as long as high transient data input trigger signals are received. The transmitter will also be automatically switched off if there are no data input transients for a time exceeding approximately typical 40ms at 433.92MHz and 50ms at 315MHz applications.

FEATURES

 APPLICATIONS

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