NXP Semiconductors MKW01Z128, Reference Manual

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System Considerations
MKW01xxRM Reference Manual, Rev. 3, 04/2016
Freescale Semiconductor, Inc. 4-15
4.6 Transceiver RF Configurations and External Connections
The MKW01Z128 transceiver radio has features that allow for a flexible as well as low cost RF interface:
• Sensitivity down to -120 dBm at 1.2 kbps
• High selectivity w/16-tap FIR channel filter
• Robust receiver front end:
— IIP3 = -18 dBm
— IIP2 = +35 dBm
— 80 dB blocking immunity
— No image frequency response
• Programmable Pout from -18 to +17 dBm in 1 dB steps
• FSK bit rates up to 600 kbps
• FSK, GFSK, MSK, GMSK, and OOK modulators
• Two TX output power configurations
4.6.1 RF Interface Pins
The MKW01Z128 transceiver has the following pins associated with the RF interface:
• VR_PA - regulated voltage supply to the internal PA circuit, to be routed through the matching
network
• PA_BOOST - optional secondary high-power TX PA
• RFIO - RF bidirectional input/output; used as input only for PA boost mode
• RXTX - digital output to control RF switch
• GND_PA1- RF ground
• GND_PA2 - RF ground
NOTE
The following descriptions for RF operation are not meant as complete
applications information, but rather general information. Freescale supplies
evaluation boards as well as complete reference designs, and the user is
directed to these designs upon which to build target systems.
There are two basic RF configurations as described in the following sections.
4.6.2 Standard Output Power RF Configuration (Single, Bidirectional
Port)
The standard RF configuration for the transceiver is a single, bidirectional port mode (shown in
Figure 4-5 ):
• Only the bidirectional RF pin RFIO is used
• Maximum output power of typ13 dBm into a 50 ohm load.
• The output power is programmable in approximately 1 dB steps.