NRF902 Datasheet, PDF (2/13 Pages) List of Unclassifed Manufacturers – Single chip 868 MHz Transmitter

PRELIMINARY PRODUCT SPECIFICATION
nRF902 Single chip 868 MHz Transmitter
BLOCK DIAGRAM
xtal
FSK
Crystal
Oscillator
Clock
Divider
1/8
Frequency synthesizer
Phase
Loop
Detector Filter
VCO
Power
A m p lifier
REXT
Prescaler
1/64
Figure 1. nRF902 block diagram
XO8
ant1
ant2
PIN FUNCTIONS
Pin
Name
Pin function Description
1
xtal
Input
Crystal pin / Power Up
2
REXT
Input
Power adjust / Clock Mode / ASK modulation digital input
3
XO8
Output
Reference Clock Output (Crystal Frequency / 8)
4
VDD
Input
Positive Supply (2.4 - 3.6V)
5
FSK
Input
Digital Data Input
6
ant2
Power/Output
Antenna output 1
7
ant1
Power/Output
Antenna output 2
8
VSS
Power
Ground (0V)
Table 2. nRF902 pin functions
PIN ASSIGNMENT
xtal 1
REXT 2
XO8 3
VDD 4
nRF902
8 VSS
7 ant1
6 ant2
5 FSK
Figure 2. nRF902 pin assignment
Nordic VLSI ASA
Revision: 1.0
- Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Page 2 of 13
April 2000