The TH72016 from Melexis comes in a space-saving 10-pin quad flat no-lead (QFN) package with a footprint of only 3 mm x 3 mm. Compared to other solutions on the market, Melexis’ ICs do not require external components to set up the PLL loop filter or the VCO. It enables designers to perfectly match their system requirements to a large scale of coding schemes and propagation ranges.

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The TH72016 IC accepts battery voltages from 1.9 V to 5.5 V. Power consumption ranges from 3.5 mA to 12.8 mA depending on the frequency and power setting. In standby mode the current consumption is below 50 nA. The programmable RF transmit power range between –12 dBm to 10 dBm allows the designer to adapt to specific RF power requirements.

The TH72016 transmitter IC combines flexibility with high levels of circuit complexity. Compared to a SAW-based solution, the PLL-based transmitter offers substantially more frequency stability. At the same time it can be easily re-configured for another output frequency just by changing the crystal frequency. SAW transmitters, on the contrary, are limited because they are only available for certain operating frequencies.

The extended operating temperature range of -40°C to +125 C makes the part suitable for automotive applications such as remote keyless entry. Melexis also offers corresponding receiver chips to complete the system. The new TH72016 transmitter IC completes the existing TH720xx family of transmitters.