MLX71120_12 Datasheet, PDF (3/31 Pages) Melexis Microelectronic Systems – FSK/FM/ASK Receiver

MLX71120
300 to 930MHz
FSK/FM/ASK Receiver
Document Content
1 Theory of Operation ...................................................................................................5
1.1 General .............................................................................................................................. 5
1.2 Technical Data Overview ................................................................................................... 5
1.3 Block Diagram.................................................................................................................... 6
1.4 Operating Modes................................................................................................................ 7
1.5 LNA Selection .................................................................................................................... 7
1.6 Mixer Section ..................................................................................................................... 8
1.7 IF Amplifier......................................................................................................................... 8
1.8 PLL Synthesizer ................................................................................................................. 8
1.9 Reference Oscillator........................................................................................................... 9
1.10 Clock Output ................................................................................................................... 9
1.11 FSK Demodulator ........................................................................................................... 9
1.12 Baseband Data Path..................................................................................................... 10
1.13 Data Filter ..................................................................................................................... 11
1.14 Data Slicer .................................................................................................................... 11
1.14.1 Averaging Detection Mode ..................................................................................................... 12
1.14.2 Peak Detection Mode ............................................................................................................. 12
1.15 Data Output and Noise Cancellation Filter .................................................................... 13
2 Frequency Planning .................................................................................................14
2.1 Calculation of Frequency Settings.................................................................................... 15
2.2 Standard Frequency Plans............................................................................................... 16
2.3 433/868MHz Frequency Diversity .................................................................................... 16
3 Pin Definitions and Descriptions ............................................................................17
4 Technical Data..........................................................................................................21
4.1 Absolute Maximum Ratings.............................................................................................. 21
4.2 Normal Operating Conditions ........................................................................................... 21
4.3 DC Characteristics ........................................................................................................... 22
4.4 AC System Characteristics............................................................................................... 23
4.5 External Components....................................................................................................... 25
5 Test Circuit ...............................................................................................................26
5.1 Dual-Channel Application Circuit...................................................................................... 26
5.1.1 Test Circuit Component List for Figure 10 ................................................................................. 27
39010 71120
Rev. 008
Page 3 of 31
Data Sheet
Jun/12