cef830g Hope Microelectronics co., Ltd, cef830g Datasheet - Page 109

• Manufacturer Part Number: cef830g
• Description: Rf42/43 Ism Transmitter
• Manufacturer: Hope Microelectronics co., Ltd

PKG
25
26
Tel: [phone]
PADDLE_GND
SDN
XIN
GND
I
I
Fax: [phone]
Xin pin with an external signal source.
Crystal Oscillator Input. Connect to an external 30 MHz crystal or to an external source. If
using an external clock source with no crystal, dc coupling with a nominal 0.8 VDC level is
recommended with a minimum ac amplitude of 700 mVpp.
Shutdown input pin. 0–V
mode. When SDN =1 the chip will be completely shutdown and the contents of the registers
will be lost.
The exposed metal paddle on the bottom of the RF42/43 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 RF42/43
E-mail: [e-mail]
DD
V digital input. SDN should be = 0 in all modes except Shutdown
R F 4 2 / 4 3
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