MLX71120

300 to 930MHz

FSK/FM/ASK Receiver

REVISION 009 - JUNE 16, 2017

3901071120

Contents

Features.....................................................................................................................................................1

Application Examples .................................................................................................................................1

Pin Description...........................................................................................................................................1

Ordering Code............................................................................................................................................1

General Description ...................................................................................................................................1

1. Theory of Operation...............................................................................................................................4

1.1. General................................................................................................................................................ 4

1.2. Technical Data Overview.................................................................................................................... 4

1.3. Block Diagram..................................................................................................................................... 5

1.4. Operating Modes................................................................................................................................ 6

1.5. LNA Selection...................................................................................................................................... 6

1.6. Mixer Section...................................................................................................................................... 7

1.7. IF Amplifier.......................................................................................................................................... 7

1.8. PLL Synthesizer ................................................................................................................................... 7

1.9. Reference Oscillator........................................................................................................................... 8

1.10. Clock Output..................................................................................................................................... 8

1.11. FSK Demodulator.............................................................................................................................. 8

1.12. Baseband Data Path ......................................................................................................................... 9

1.13. Data Filter ....................................................................................................................................... 10

1.14. Data Slicer....................................................................................................................................... 10

1.14.1. Averaging Detection Mode...................................................................................................... 11

1.14.2. Peak Detection Mode .............................................................................................................. 11

1.15. Data Output and Noise Cancellation Filter ................................................................................... 12

2. Frequency Planning..............................................................................................................................13

2.1. Calculation of Frequency Settings ................................................................................................... 14

2.2. Standard Frequency Plans ............................................................................................................... 15

2.3. 433/868MHz Frequency Diversity................................................................................................... 15

3. Pin Definitions and Descriptions...........................................................................................................16

4. Technical Data......................................................................................................................................20

4.1. Absolute Maximum Ratings ............................................................................................................. 20

4.2. Normal Operating Conditions.......................................................................................................... 20

4.3. DC Characteristics ............................................................................................................................ 21