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TDA5211
ASK/FSK Single Conversion Receiver
Wireless Components
ASK/FSK Single Conversion Receiver
TDA 5211 Version 2.0
Specification May 2001
Edition 05.01
Published by Infineon Technologies AG,
Balanstraße 73,
81541 München© InfineonTechnologiesAG May 2001.
All Rights Reserved.
Attention please!As far as patents or other rights of third parties are concerned, liability is only assumed for components, not for applications, processes and circuits im-
plemented within components or assemblies.
The information describes the type of component and shall not be considered as assured characteristics.
Terms of delivery and rights to change design reserved.
Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest
InfineonTechnologies Office.
InfineonTechnologiesAG is an approved CECC manufacturer.
PackingPlease use the recycling operators known to you. We can also help you – get in touch with your nearest sales office. By agreement we will take packing
material back, if it is sorted. You must bear the costs of transport.
For packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs incurred.
Components used in life-support devices or systems must be expressly authorized for such purpose!Critical components1 of the InfineonTechnologiesAG, may only be used in life-support devices or systems2 with the express written approval of the
InfineonTechnologiesAG.A critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the failure of that life-
support device or system, or to affect its safety or effectiveness of that device or system.Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sustain human life. If they
fail, it is reasonable to assume that the health of the user may be endangered.
Product Info
Product Info
General DescriptionThe IC is a very low power consump-
tion single chip FSK/ASK Superhet-
erodyne Receiver (SHR) for the
frequency band 310 to 350 MHz that is
pin compatible with the ASK Receiver
TDA5201. The IC offers a high level of
integration and needs only a few exter-
nal components. The device contains
a low noise amplifier (LNA), a double
balanced mixer, a fully integrated
VCO, a PLL synthesiser, a crystal
oscillator, a limiter with RSSI genera-
tor, a PLL FSK demodulator, a data fil-
ter, a data comparator (slicer) and a
peak detector. Additionally there is a
power down feature to save battery
life.
Features-Low supply current (Is = 5.7 mA
typ. in FSK mode, Is = 5 mA typ. in
ASK mode)Supply voltage range 5V ±10%Power down mode with very low
supply current (50nA typ.)FSK and ASK demodulation capa-
bilityFully integrated VCO and PLL
SynthesiserASK sensitivity better than
-110 dBm over specified tempera-
ture range (- 40 to +105°C)Selectable frequency ranges 310-
330 MHz and 330-350 MHzLimiter with RSSI generation,
operating at 10.7MHzSelectable reference frequency2nd order low pass data filter with
external capacitorsData slicer with self-adjusting
thresholdFSK sensitivity better than
-102 dBm over specified tempera-
ture range (- 40 to +105°C)
Applications-Keyless Entry SystemsRemote Control SystemsAlarm SystemsLow Bitrate Communication
Systems
Ordering Informationsamples available
Table of ContentsTable of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12.1Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.2Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.3Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.4Package Outlines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
3.1Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
3.2Pin Definition and Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.3Functional Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.4Functional Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.4.1Low Noise Amplifier (LNA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.4.2Mixer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.4.3PLL Synthesizer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.4.4Crystal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.4.5Limiter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.4.6FSK Demodulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.4.7Data Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.4.8Data Slicer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.4.9Peak Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.4.10Bandgap Reference Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14.1Choice of LNA Threshold Voltage and Time Constant. . . . . . . . . . . . . . . . . . . . . . . . . . . .2
4.2Data Filter Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4.3Quartz Load Capacitance Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
4.4Quartz Frequency Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
4.5Data Slicer Threshold Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4.6ASK/FSK Switch Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.6.1FSK Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.6.2ASK Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.7Principle of the Precharge Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
5.1Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
5.1.2Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
5.1.3AC/DC Characteristics at TAMB = 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
5.1.4AC/DC Characteristics at TAMB = -40 to 105°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.2Test Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5.3Test Board Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
5.4Bill of Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
5.5Appendix - Noise Figure and Gain Circles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
