TH72035KLD Melexis Inc, TH72035KLD Datasheet
TH72035KLD
Specifications of TH72035KLD
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TH72035KLD Summary of contents
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Features Fully integrated PLL-stabilized VCO Frequency range from 850 MHz to 930 MHz Single-ended RF output FSK through crystal pulling allows modulation from kbit/s High FSK deviation possible for wideband data transmission ASK achieved by on/off keying ...
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Document Content 1 Theory of Operation ...................................................................................................3 1.1 General ............................................................................................................................. 3 1.2 Block Diagram .................................................................................................................. 3 2 Functional Description ..............................................................................................3 2.1 Crystal Oscillator .............................................................................................................. 3 2.2 FSK Modulation ................................................................................................................ 4 2.3 Crystal Pulling................................................................................................................... 4 2.4 ASK Modulation ................................................................................................................ 5 2.5 ...
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Theory of Operation 1.1 General As depicted in Fig.1, the TH72035 transmitter consists of a fully integrated voltage-controlled oscillator (VCO), a divide-by-32 divider (div32), a phase-frequency detector (PFD) and a charge pump (CP). An inter- nal loop filter determines ...
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FSK Modulation FSK modulation can be achieved by pulling the crystal oscillator frequency. compatible data stream applied at the pin FSKDTA digitally modulates the XOSC via an integrated NMOS switch. Two external pulling capacitors CX1 and CX2 allow the ...
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ASK Modulation The PLL transmitter can be ASK-modulated by applying a data stream directly at the pin ASKDTA. This turns the internal current sources of the power amplifier on and off and therefore leads to an ASK signal at ...
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Mode Control Logic The mode control logic allows two different modes of operation as listed in the following table. The mode control pin ENTX is pulled- down internally. This guarantees that the whole circuit is shut down if this ...
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Pin Definition and Description Pin No. Name I/O Type 1 ASKDTA input 2 FSKDTA input 3 FSKSW analog I/O 4 ROI analog I/O 5 ENTX input 6 PSEL analog I/O 7 VEE ground 8 OUT output 9 VEE ground ...
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Electrical Characteristics 4.1 Absolute Maximum Ratings Parameter Supply voltage Input voltage Storage temperature Junction temperature Thermal Resistance Power dissipation Electrostatic discharge 4.2 Normal Operating Conditions Parameter Supply voltage Operating temperature Input low voltage CMOS Input high voltage CMOS XOSC ...
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DC Characteristics all parameters under normal operating conditions, unless otherwise stated; typical values °C and V A Parameter Operating Currents Standby current Supply current in power step 0 Supply current in power step 1 Supply ...
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AC Characteristics all parameters under normal operating conditions, unless otherwise stated; typical values °C and V A Parameter CW Spectrum Characteristics Output power in step 0 (Isolation in off-state) Output power in step 1 Output ...
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Typical Operating Characteristics 5.1 DC Characteristics I SBY 5µA 4µA 3µA 2µA 1µA 200nA 150nA 100nA 50nA 0 2.0 2.5 4.9 4.5 4.1 3.7 3.3 2.9 2.2 2.6 1.8 39010 72035 Rev. 009 Standby current 3.0 3.5 4.0 Vcc ...
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Rev. 009 power step 1 3.4 3.0 3.8 4.2 Vcc [V] Fig. 8: Supply current in power ...
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Rev. 009 power step 3 3.4 3.0 3.8 4.2 Vcc [V] Fig. 10: Supply current in power step 3 ...
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AC Characteristics • Data according to test circuit in Fig. 18 (868.3MHz) -10.5 -11.0 -11.5 -12.0 -12.5 -13.0 2.2 2.6 1.8 -2.0 -3.0 -4.0 -5.0 2.2 2.6 1.8 39010 72035 Rev. 009 power step 1 3.4 3.8 4.2 3.0 ...
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Rev. 009 power step 3 3.0 3.4 3.8 4.2 Vcc Vcc [V] [V] Fig. 14: Output power in step 3 power ...
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Fig.16: 39010 72035 Rev. 009 RF output signal with PLL reference spurs Fig.17: Single sideband phase noise Page TH72035 868/915MHz FSK/ASK Transmitter Data Sheet March/08 ...
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Test Circuit Fig. 18: Test circuit for FSK and ASK with 50 Ω matching network 6.1 Test circuit component list to Fig. 18 Value @ Part Size 868.3 MHz CM1 0805 1.8 pF CM2 0805 5.6 pF CM3 0805 ...
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Package Description The device TH72035 is RoHS compliant all Dimensions min 2.85 2.85 max 3.15 3.15 all Dimensions in inch min 0.112 0.112 0.0878 0.051 0.0315 max 0.124 0.124 0.0976 0.055 ...
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Reliability Information This Melexis device is classified and qualified regarding soldering technology, solderability and moisture sensitivity level, as defined in this specification, according to following test methods: Reflow Soldering SMD’s (Surface Mount Devices) • IPC/JEDEC J-STD-020 “Moisture/Reflow Sensitivity Classification ...
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Disclaimer 1) The information included in this documentation is subject to Melexis intellectual and other property rights. Reproduction of information is permissible only if the information will not be altered and is accompanied by all associated conditions, limitations and ...