CMT2300A
Table of Contents
1. Electrical Characteristics ....................................................................................................................4
1.1 RecommendedOperation Condition...................................................................................................................4
1.2 Absolute Maximum Rating..................................................................................................................................4
1.3 PowerConsumption ...........................................................................................................................................5
1.4 Receiver.............................................................................................................................................................6
1.5 Transmitter.........................................................................................................................................................8
1.6 Settling Time ......................................................................................................................................................8
1.7 Frequency Synthesizer.......................................................................................................................................9
1.8 Crystal Oscillator .............................................................................................................................................. 10
1.9 Low Frequency Oscillator.................................................................................................................................10
1.10 Low Battery Detection......................................................................................................................................11
1.11 Digital Interface ................................................................................................................................................11
1.12 Figures of Critical Parameters.......................................................................................................................... 11
1.12.1 Rx Current VS. Supply Voltage................................................................................................................. 11
1.12.2 Rx Current VS. Voltage Temperature.......................................................................................................12
1.12.3 Sensitivity VS. Voltage.............................................................................................................................12
1.12.4 Sensitivity VS. Temperature.....................................................................................................................13
1.12.5 Tx Power VS. Supply Voltage..................................................................................................................14
1.12.6 Tx Phase Noise........................................................................................................................................14
2. Pin Descriptions.................................................................................................................................16
3. Typical Application Schematic..........................................................................................................18
3.1 Direct Tie Schematic Diagram.......................................................................................................................... 18
3.2 RF Switch Type Schematic .............................................................................................................................. 20
4. Function Descriptions .......................................................................................................................23
4.1 Transmitter....................................................................................................................................................... 24
4.2 Receiver...........................................................................................................................................................24
4.3 Additional Functions.........................................................................................................................................24
4.3.1 Power-On Reset (POR)...........................................................................................................................24
4.3.2 Crystal Oscillator......................................................................................................................................25
4.3.3 Sleep Timer..............................................................................................................................................26
4.3.4 Low Battery Detection..............................................................................................................................26
4.3.5 Received Signal Strength Indicator(RSSI)...............................................................................................26
4.3.6 Phase Jump Detector（PJD）.................................................................................................................27
4.3.7 Automatic Frequency Control (AFC)........................................................................................................27
4.3.8 Clock Data Recovery (CDR)....................................................................................................................28
4.3.9 Fast Frequency Hopping..........................................................................................................................28
5. Chip Operation....................................................................................................................................29
5.1 SPI Interface..................................................................................................................................................... 29
5.2 FIFO.................................................................................................................................................................30
5.2.1 FIFO Read Operation ..............................................................................................................................31
5.2.2 FIFO Associated Interrupt........................................................................................................................32
