TH7108EFC Melexis Inc, TH7108EFC Datasheet
TH7108EFC
Specifications of TH7108EFC
TH7108EFF
Related parts for TH7108EFC
TH7108EFC Summary of contents
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Features ! Fully integrated, PLL-stabilized VCO ! Frequency range from 850 MHz to 920 MHz ! FSK through crystal pulling allows modulation from kbit/s ! High FSK deviation possible for wideband data transmission ! ASK achieved by ...
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Document Content 1 Theory of Operation ...................................................................................................3 1.1 General............................................................................................................................... 3 1.2 Block Diagram .................................................................................................................... 3 2 Functional Description ..............................................................................................4 2.1 FSK Modulation .................................................................................................................. 4 2.2 Frequency Modulation ........................................................................................................ 4 2.3 ASK Modulation.................................................................................................................. 4 2.4 Mode Control Logic............................................................................................................. 4 3 Pin ...
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Theory of Operation 1.1 General As depicted in Fig.1, the TH7108 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. An external loop filter at pin LF ...
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Functional Description 2.1 FSK Modulation A Colpitts crystal oscillator (XOSC) is used as the reference oscillator of a phase-locked loop (PLL) synthe- sizer. FSK modulation is achieved by pulling the crystal (XTAL) through the data CMOS-compatible data ...
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Pin Definition and Description Pin No. Name I/O Type 1 LF1 output 2 SUB ground 3 DATA input 4 RO2 analog I/O 5 RO1 analog I/O 6 ENTX input 7 ENCK input 3901007108 Rev. 008 FSK/FM/ASK Transmitter Functional Schematic ...
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Pin No. Name I/O Type 8 CKOUT output 9 PS analog I/O 10 VCC supply 11 VEE ground 12 OUT2 output 13 OUT1 output 14 VEE ground 15 VCC supply 16 LF2 input 3901007108 Rev. 008 Functional Schematic CKOUT 200 ...
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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 1) all pins except OUT1, OUT2 4.2 Normal Operating Conditions Parameter Supply voltage Operating temperature Input low voltage ...
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DC Characteristics all parameters under normal operating conditions, unless otherwise stated; typical values °C and V A Parameter Symbol Standby current Clock only current Operating current Input current Pull down current Pull up current MOS ...
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Test Circuit Fig. 2: Test circuit for FSK, ASK and FM; with 50 matching network 5.1 Test circuit component list (Fig. 2) Part Size Value CF1 0603 5.6 nF CF2 0603 27 pF CX1 0603 56 pF _FSK CX1 ...
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Spectrum Plots All plots depict TH7108‘s typical performance at V derived with the test circuit shown in Fig. 2. Fig output signal and spurious emissions, CW mode (DATA = HIGH) Fig. 4: Single-sideband phase noise at 500 ...
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Fig.5: Fig. 6: ASK modulation with R Fig with kHz, FM input signal with 1 V mod 3901007108 Rev. 008 FSK modulation with R = 6.6 kbit/s NRZ FSK = 4 kbit/s NRZ ASK around ...
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Package Information .10 (.004) Fig. 8: QSOP16 (Quarter size Small Outline Package) all Dimension in mm, coplanarity < 0.1mm min 4.80 3.81 5.79 max 4.98 3.99 6.20 all Dimension in inch, coplanarity ...
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Reliability Information Melexis devices are classified and qualified regarding suitability for infrared, vapor phase and wave soldering with usual (63/37 SnPb-) solder (melting point at 183degC). The following test methods are applied: IPC/JEDEC J-STD-020A (issue April 1999) Moisture/Reflow Sensitivity ...
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Disclaimer Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the ...