nRF904 Nordic VLSI, nRF904 Datasheet - Page 2

• Manufacturer Part Number: nRF904
• Description: RF Transmitter 902-928MHz
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
Nordic VLSI ASA
Revision: 2.1
1
2
3
4
5
6
7
8
R E X T
X T A L
D I N
XTAL
REXT
XO8
VDD
DIN
ANT2
ANT1
VSS
-
Vestre Rosten 81, N-7075 Tiller, Norway
Figure 2. nRF904 pin assignment.
C r y s ta l
O s c i lla to r
Input
Input
Output
Power
Input
Output
Output
Power
XTAL
REXT
XO8
VDD
P h a s e
D e te c to r
Figure 1. nRF904 block diagram.
Table 3. nRF904 pin functions.
F r e q u e n c y s y n th e s iz e r
1
2
3
4
P r e s c a le r
1 /2 5 6
L o o p
F i lte r
1 /4
nRF 904
QhtrÃ!Âsà %
Crystal pin / Power Up
Power adjust / Clock Mode / ASK modulation digital input
Reference Clock Output (Crystal Frequency / 8)
Power Supply (+ 3 V DC)
Digital Data Input
Antenna terminal
Antenna terminal
Ground (0V)
V C O
C lo c k
D iv id e r
1 /2
-
8
7
6
5
Phone [phone]
P o w e r
A m p l if ie r
VSS
ANT1
ANT2
DIN
-
X O 8
A N T 1
A N T 2
Fax [phone]
October 2001