TH72012 Transmitter - 433MHz, ASK (SOIC8)
The TH72012 ASK transmitter IC is designed for applications in the European 433 MHz industrial-scientific-medical (ISM) band, according to the EN 300 220 telecommunications standard; but it can also be used in other counties with similar standards, e.g. FCC part 15.231.
The transmitter's carrier frequency fc is determined by the frequency of the reference crystal fref. The integrated PLL synthesizer ensures that carrier frequencies, ranging from 380 MHz to 450 MHz, can be achieved. This is done by using a crystal with a reference frequency according to: fref = fc/N, where N = 32 is the PLL feedback divider ratio.
Product characteristics :
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Fully integrated PLL-stabilized VCO
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Frequency range from 380 MHz to 450 MHz
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Single-ended RF output
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ASK achieved by on/off keying of internal power amplifier up to 40 kbit/s
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Operating temperature range -40°C to +125°C
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-pin Small Outline Integrated Circuit (SOIC)
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Adjustable current consumption from 3.4 mA to 10.6 mA
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On-chip low voltage detector
