SP8908 [ZARLINK]
5GHZ ± 8 Fixed Modulus Divider; 5GHZ ± 8固定模数分频器
| 型号： | SP8908 |
| 厂家： | 
ZARLINK SEMICONDUCTOR INC |
| 描述： | 5GHZ ± 8 Fixed Modulus Divider |
| 文件： | 总6页 (文件大小：409K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SP8908 (MP)
5GHZ ÷ 8 Fixed Modulus Divider
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
Absolute Maximum Ratings
• Very High Operating Speed
Supply voltage, V
Storage temperature
Maximum junction temperature
Prescaler input voltage
Operating temperature
6·5V
265°C to 1150°C
1150°C
CC
• Operation down to DC with Square Wave Input
• Silicon Technology for Low Phase Noise
(Typically better than 2140dBc/Hz at 1KHz)
• 5V Single Supply Operation
2·5Vp-p
KG240°C to 185°C TCASE
• Low Power Dissipation: 360mW (Typ.)
• Surface Mount Plastic Package
OUTPUT
V
CC
V
CC
1
8
48
7
6
OUTPUT
OUTPUT
V
REF
400
400
2
3
10mA
INPUT
INPUT
4
4
GND
Figure 1 - Block Diagram
SP8908 Preliminary Information
8
7
6
5
1
2
3
4
V
OUTPUT V
OUTPUT
OUTPUT
GND
CC
CC
INPUT
INPUT
GND
SP8908
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: TAMB = 240°C to 185°C, VCC = 4·75V to 5·25V
Value
Characteristic
Pin
Units
Conditions
Min. Typ. Max.
Supply current
1, 8
2, 3
2, 3
2, 3
2, 3
2, 3
6, 7
6, 7
-
1·0
-
72
-
-
-
-
96
5·0
mA
Input frequency
Input sensitivity
Input sensitivity
Input overload
Input overload
Output voltage
Output power
GHz RMS sinewave
180 mVrms fIN = 1GHz and 4.2GHz
570 mVrms fIN = 5GHz
-
-
-
-
440
700
-
mVrms fIN = 1GHz and 3GHz
mVrms fIN = 5.0GHz and 3.8GHz
Vp-p Into 50Ω pullup resistor
-
0·5
0
210·0
12·0 dBm fIN = 1GHz and 5GHz (see note 1 )
NOTE
1. Measured into 50Ω measuring instrument in parallel with 50Ω pullup resistor. See Figure 5.
800
TESTED AS PER
TABLE OF
600
ELECTRICAL
CHARACTERISTICS
400
OPERATING WINDOW
200
1
2
3
4
5
6
7
FREQUENCY (GHz)
Figure 3 - Typical input sensitiviy (sinewave drive)
2
Preliminary Information SP8908
V
CC 15V
50
50
8
7
6
5
1
2
3
4
1n
1n
SIGNAL
GENERATOR
50Ω MEASURING
SP8908
INSTRUMENT
1n
10n
1n
10n
Figure 4 - Typical application and test circuit
j1
j0.5
j2
3GHz
j0.2
5GHz
j5
0.5
5
0.2
1
2
0
0·3GHz
1GHz
2j5
2j0.2
2j2
2j0.5
2j1
Figure 5 - Typical input impedance
3
SP8908 Preliminary Information
( f L ) [ d B c / H z ]
Figure 6 - Typical phase noise, input frequency = 3GHz
4
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