SP8908 (MP)
5GHZ
4
Fixed Modulus Divider
48
Preliminary Information
DS4359 Issue 1.3 September 1999
The SP8908 is one of a range of very high speed low
power prescalers for professional applications. The dividing
elements are static D type flip flops and therefore allow
operation down to DC if the drive signal is a pulse waveform
with fast risetime. The output stage has a differential current
output and provides a direct drive into a 50 ohm load.
Ordering Information
SP8908/KG/MP1S (tubes)
SP8908/KG/MP1T (tape and reel)
Features
G
Very High Operating Speed
G
Operation down to DC with Square Wave Input
G
Silicon Technology for Low Phase Noise
Absolute Maximum Ratings
Supply voltage, V
CC
6·5V
Storage temperature
265°C
to
1150°C
Maximum junction temperature
1150°C
Prescaler input voltage
2·5Vp-p
Operating temperature
KG240°C to
185°C
T
CASE
(Typically better than
2140dBc/Hz
at 1KHz)
G
5V Single Supply Operation
G
Low Power Dissipation: 360mW (Typ.)
G
Surface Mount Plastic Package
OUTPUT
V
CC
V
CC
1
8
7
6
OUTPUT
OUTPUT
V
REF
4
8
400
INPUT
INPUT
2
3
400
10mA
4
4
GND
Figure 1 block diagram