TH72011KDC Melexis Inc, TH72011KDC Datasheet
TH72011KDC
Specifications of TH72011KDC
Available stocks
Related parts for TH72011KDC
TH72011KDC Summary of contents
Page 1
Features Fully integrated PLL-stabilized VCO Frequency range from 380 MHz to 450 MHz Single-ended RF output FSK through crystal pulling allows modulation from kbit/s High FSK deviation possible for wideband data transmission Wide power supply range from ...
Page 2
Document Content 1 Theory of Operation ...................................................................................................3 1.1 General ............................................................................................................................. 3 1.2 Block Diagram .................................................................................................................. 3 2 Functional Description ..............................................................................................4 2.1 Crystal Oscillator .............................................................................................................. 4 2.2 FSK Modulation ................................................................................................................ 4 2.3 Crystal Pulling................................................................................................................... 4 2.4 Output Power Selection .................................................................................................... 5 ...
Page 3
Theory of Operation 1.1 General As depicted in Fig.1, the TH72011 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 ...
Page 4
Functional Description 2.1 Crystal Oscillator A Colpitts crystal oscillator with integrated functional capacitors is used as the reference oscillator for the PLL synthesizer. The equivalent input capacitance CRO offered by the crystal oscillator input pin ROI is about 18pF. ...
Page 5
Output Power Selection The transmitter is provided with an output power selection feature. There are four predefined output power steps and one off-step accessible via the power selection pin PSEL. A digital power step adjustment was chosen because of ...
Page 6
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 ...
Page 7
Pin Definition and Description Pin No. Name I/O Type 1 FSKDTA input 2 FSKSW analog I/O 3 ROI analog I/O 4 ENTX input 5 PSEL analog I/O VCC 6 supply OUT 7 output VEE 8 ground 39010 72011 Rev. ...
Page 8
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 ...
Page 9
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 ...
Page 10
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 ...
Page 11
Typical Operating Characteristics 5.1 DC Characteristics I SBY 5µA 4µA 3µA 2µA 1µA 200nA 150nA 100nA 50nA 0 2.0 2.5 Fig. 6: Standby current limits 3.4 3.0 2.6 2.2 1.8 1.8 2.2 2.6 39010 72011 Rev. 009 Standby current ...
Page 12
Rev. 009 power step 1 3.4 3.8 4.2 3.0 Vcc [V] Fig. 8: Supply current in power step 1 power step ...
Page 13
Fig. 10: Supply current in power step 3 12.0 11.5 11.0 10.5 10.0 9.5 9.0 2.2 2.6 1.8 39010 72011 Rev. 009 power step 3 3.4 3.8 4.2 3.0 Vcc ...
Page 14
AC Characteristics • Data according to test circuit in Fig. 18 -11.5 -12.0 -12.5 -13.0 -13.5 -14.0 2.2 1.8 -1.0 -2.0 -3.0 -4.0 2.2 1.8 39010 72011 Rev. 009 power step 1 2.6 3.4 3.8 3.0 Vcc [V] Fig. ...
Page 15
Rev. 009 power step 3 2.6 3.4 3.8 3.0 Vcc [V] Fig. 14: Output power in step 3 power step 4 2.6 ...
Page 16
Fig. 16: RF output signal with PLL reference spurs 39010 72011 Rev. 009 Fig. 17: Single sideband phase noise Page TH72011 433MHz FSK Transmitter Data Sheet March/08 ...
Page 17
Test Circuit Fig. 18: Test circuit for FSK with 50 Ω matching network 6.1 Test circuit component list to Fig. 18 Value @ Part Size 433.92 MHz CM1 0805 5.6 pF CM2 0805 10 pF CM3 0805 82 pF ...
Page 18
Package Description The device TH72011 is RoHS compliant .10 (.004) all Dimension in mm, coplanarity < 0.1mm min 4.80 3.81 5.80 max 4.98 3.99 6.20 all Dimension in inch, coplanarity < 0.004” ...
Page 19
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 ...
Page 20
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 ...