SP8910 (MP)
5GHZ 4
4
4
4
410 Fixed Modulus Divider
Preliminary Information
DS4360 Issue 1.3 September 1999
The SP8910 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 internal100 ohm
pull up resistors, giving a 05V p-p output. If required, an
external 100 ohm can be connected in parallel to give a
50 ohm output.
Ordering Information
SP8910/KG/MP1S (tubes)
SP8910/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
(Typically better than 2140dBc/Hz at 1KHz)
G
5V Single Supply Operation
G
Low Power Dissipation: 340mW (Typ.)
G
Surface Mount Plastic Package
Absolute Maximum Ratings
Supply voltage, V
CC
Storage temperature
Maximum junction temperature
Prescaler input voltage
Operating temperature
Figure 1 block diagram
65V
265
C to 1150C
1150
C
25Vp-p
KG240
C to 185C T
CASE
400
400
V
CC
V
REF
OUTPUT
V
CC
5mA
OUTPUT
OUTPUT
1
8
7
6
2
3
INPUT
INPUT
4
4
100
100
GND
4
5
4
2
2
SP8910
1
2
3
4
8
7
6
5
OUTPUT V
CC
OUTPUT
OUTPUT
GND
V
CC
INPUT
INPUT
GND
MP8
Figure 2 Pin connections - top view
Electrical Characteristics
These characteristics are guaranteed by either production test or design over the following range of operating conditions
unless otherwise stated: T
AMB
= 240
C to 185C, V
CC
= 475V to 525V
-
10
10
-
-
440
700
-
2180
Characteristic
RMS sinewave
RMS sinewave, T
CASE
= 255
C to 185C
f
IN
= 1GHz and 4.2GHz
f
IN
= 5GHz
f
IN
= 1GHz and 3GHz
f
IN
= 5.0GHz and 3.8GHz
Into 100
pullup resistor
f
IN
= 1GHz and 5GHz (see note 1 )
92
50
55
180
570
-
-
-
240
Conditions
Pin
1, 8
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
6, 7
6, 7
Supply current
Input frequency
Input frequency
Input sensitivity
Input sensitivity
Input overload
Input overload
Output voltage
Output power
Typ.
Max.
Min.
Value
Units
mA
GHz
GHz
mVrms
mVrms
mVrms
mVrms
Vp-p
dBm
68
-
-
-
-
-
025
290
SP8910
NOTE
1. Measured into 50
measuring instrument in parallel with 100 pullup resistor. See Figure 5.
800
600
400
200
V
IN
INT
O 50
(mV RMS)
1
2
3
4
5
6
7
FREQUENCY (GHz)
OPERATING WINDOW
TESTED AS PER
TABLE OF
ELECTRICAL
CHARACTERISTICS
Figure3 Typical input sensitiviy (sinewave drive)
3
SP8910
Figure 4 Typical application and test circuit
j2
j1
j0.5
j0.2
0
2j0.2
2j0.5
2j1
2j2
1
0.5
0.2
j5
2j5
2
5
03GHz
3GHz
5GHz
1GHz
Figure 5 Typical input impedance
SP8910
1
2
3
4
8
7
6
5
V
CC
15V
1n
10n
1n
SIGNAL
GENERATOR
100
1n
1n
10n
50
MEASURING
INSTRUMENT
100
4
SP8910
Figure 6 Typical phase noise, input frequency = 3GHz
0
10
20
30
40
50
60
70
80
90
100
11
0
120
130
140
150
160
170
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
L
(f) [dBc/Hz]
10
100
1
k
10k
100k
FREQUENCY
(Hz)
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