Rainbow Electronics RF22 - Manual (Page 91)

RF22
Version: 0.1 Date: 12/23/2008
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20 SDN I Shutdown input pin. 0–VDD V digital input. SDN should be = 0 in all modes except Shutdown mode. When SDN =1
the chip will be completely shutdown and the contents of the registers will be lost.
PKG PADDLE_GND GND The exposed metal paddle on the bottom of the RF22 supplies the RF and circuit ground(s) for the entire chip. It is
very important that a good solder connection is made between this exposed metal paddle and the ground plane of
the PCB underlying the RF22.
14. Ordering Information
Part Number* Description Package Type Operating Temperature
RF22-A0-GM ISM Transceiver QFN20 Pb-free –20 to 85 °C
*Note: Add an “(R)” at the end of the device part number to denote tape and reel option; 2500 quantity per reel.
15. Package Information
Figure 55 illustrates the package details for the RF22.