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TH72032
Transmitter - 868/915MHz, ASK (SOIC8)
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The TH72032 ASK transmitter IC is designed for applications in the European 868 MHz industrial-scientific-medical (ISM) band, according to the EN 300 220 telecommunications standard. It can also be used for any other system with carrier frequencies ranging from 850 MHz to 930 MHz (e.g. for applications in the US 902 to 928 MHz ISM band).
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 850 MHz to 930 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.
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Features and Benefits
- Fully integrated PLL-stabilized VCO
- Frequency range from 850 MHz to 930 MHz
- Single-ended RF output
- ASK achieved by on/off keying of internal power amplifier up to 40 kbit/s
- Wide power supply range from 1.95 V to 5.5 V
- Operating temperature range -40°C to +125°C
- Very low standby current
- On-chip low voltage detector
- High over-all frequency accuracy
- Adjustable output power range from -11 dBm to +9 dBm
- Adjustable current consumption from 5.1 mA to 13.4 mA
- Conforms to EN 300 220 and similar standards
- 8-pin Small Outline Integrated Circuit (SOIC)
Product Applications
Wireless Access Control
Tire Pressure Monitoring Systems (TPMS)
Remote Keyless Entry (RKE)
Remote Controls
Alarm and Security Systems
Garage Door Openers
Automated Meter Reading (AMR)
General Digital Data Tansmission
Home and Building Automation
Low Power Telemetry Systems
Assets
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