MLX71121 Datasheet, PDF (2/28 Pages) Melexis Microelectronic Systems – 300 to 930MHz FSK/FM/ASK Receiver

MLX71121
300 to 930MHz
FSK/FM/ASK Receiver
Document Content
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 Filter ............................................................................................................................. 7
1.8 IF Amplifier ....................................................................................................................... 7
1.9 PLL Synthesizer ............................................................................................................... 7
1.10 Reference Oscillator ......................................................................................................... 8
1.11 Clock Output..................................................................................................................... 8
1.12 FSK Demodulator ............................................................................................................. 8
1.13 Baseband Data Path ........................................................................................................ 9
1.14 Data Filter ....................................................................................................................... 10
1.15 Data Slicer ...................................................................................................................... 10
1.15.1 Averaging Detection Mode..................................................................................................... 11
1.15.2 Peak Detection Mode ............................................................................................................. 11
1.16 Data Output and Noise Cancellation Filter ..................................................................... 12
2 Functional Description ............................................................................................13
2.1 Frequency Planning........................................................................................................ 13
2.2 Calculation of Frequency Settings.................................................................................. 14
2.3 Standard Frequency Plans ............................................................................................. 15
2.4 433/868MHz 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
4.4 AC System Characteristics ............................................................................................. 22
4.5 External Components ..................................................................................................... 23
39010 71121
Rev. 007
Page 2 of 28
Data Sheet
Feb/08