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Número de pieza | ZL40818 | |
Descripción | (ZL40813 - ZL40818) 13.5GHz Fixed Modulus Dividers | |
Fabricantes | Zarlink Semiconductor | |
Logotipo | ||
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Features
• Very High Operating Speed
• Low Phase Noise (Typically better than
-146dBc/Hz at 10kHz offset)
• 5V Single Supply Operation
• Low Power Dissipation: 500mW (Typ)
• Surface Mount Plastic Package with Exposed
Pad (See Application Notes)
Prescaler Modulus
• ZL40813 - Divide by 8
• ZL40814 - Divide by 16
• ZL40818 - Divide by 4
Applications
• 10.5 to 13.5GHz PLL applications
• LMDS
• Instrumentation
• Satellite Communications
• Fibre Optic Communications; OC48, OC192
• Ultra Low Jitter Clock Systems
ZL40813/14/18
13.5GHz Fixed Modulus Dividers
Data Sheet
July 2003
Ordering Information
ZL40813/DCE (tubes)
ZL40813/DCF (tape and reel)
ZL40814/DCE (tubes)
ZL40814/DCF (tape and reel)
ZL40818/DCE (tubes)
ZL40818/DCF (tape and reel)
8 pin SOIC
8 pin SOIC
8 pin SOIC
8 pin SOIC
8 pin SOIC
8 pin SOIC
-40°C to +85°C
Description
The ZL40813, 14 and 18 are 5V supply, very high
speed low power prescalers for professional
applications with a fixed modulus of 8, 16, or 4
respectively. The dividing elements are dynamic D type
flip flops and allow operation from 10.5GHz to 13.5GHz
with a sinewave input (Note these prescalers are not
suitable for D.C. operation). The output stage has
internal 50 ohm pull up giving a 1v p-p output. See
application notes for more details.
VCC IN
1
Vref
50 Ohm
Div N
VCC OUT
8
OUTPUT
OUTPUT B
7
6
INPUT
2
INPUT B
3
400 Ohm
GND
4
20mA
GND
5
Figure 1 - Functional Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2003, Zarlink Semiconductor Inc. All Rights Reserved.
1 page ZL40813/14/18
Data Sheet
Electrical Characteristics (Vcc = 5V ±5%, Tamb = -40 to +85C)
The following characteristics are guaranteed by design and characterisation over the range of operating conditions
unless otherwise stated:
(Input Frequency range 9 to 13.5GHz rms Sinewave)
Supply Current Table
Characteristic Pin Min. Typ. Max. Units
Conditions
Supply current 1
0.35
mA Input stage bias current †
Supply current 8 51 93 144 mA ZL40813
Supply current 8 54 96 148 mA ZL40814
Supply current 8 54 100 148 mA ZL40818
† Pin 1 is the Vcc pin for the 1st stage bias current. In some applications e.g. if the power supply is noisy, it may be advantageous to add further
supply decoupling to this pin (i.e. an additional R, C filter, see diagram of the recommended circuit configuration, Figure 9).
Input and Output Characteristics Table
Input sensitivity and output power values assume 50 Ohm source and load impedances
Characteristic Pin Min. Typ. Max. Units
Conditions
Input sensitivity 2,3
-2 2 dBm fin = 10.5 to 12.5 GHz
Input sensitivity
Output voltage
2,3
6,7
10
14
1
dBm
Vp-p
fin = 10.5 to 13.5 GHz
Differential Into 50ohm pullup
resistors
Output power 6,7 -6
0
5 dBm Single-ended output, fin = 9GHz to
13GHz, pwr ip= -10dBm .
See graphs, Figure 7 to Figure 9.
O/P Duty Cycle 6,7 45 50 55
%
Trise and Tfall 6,7
110
ps
For details of the test set-up, refer to the Application Note for RF Prescalers.
5
Zarlink Semiconductor Inc.
5 Page ZL40813/14/18
Data Sheet
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
8. 0E+ 9
Frequency_sweep, Vcc = 5.25v
Device 1,Temperature = -40°C
Device 1,Temperature = 25°C
Device 1,Temperature = 85°C
9. 0E+9
10. 0E+ 9
11. 0E+ 9
12. 0E+9
i/p frequency (Hz)
13. 0E+ 9
14 .0E +9
15 .0E+9
16 .0E +9
Figure 15 - ZL40818 (Div by 4) Pout vs Input Frequency (Vcc = 5.25V)
4.0 Oscillographs of the divider output waveforms
The following oscillographs show that the low-level feedthrough of the input waveform can be further reduced by
summing the two output pins of the device differentially, refer to Figure 16 and Figure 17.
Figure 16 - Single-ended output waveform, showing some feedthrough of the input waveform.
VCC = 5V, Vin = 2dBm, Fin = 10GHz.
11
Zarlink Semiconductor Inc.
11 Page |
Páginas | Total 15 Páginas | |
PDF Descargar | [ Datasheet ZL40818.PDF ] |
Número de pieza | Descripción | Fabricantes |
ZL40810 | 10-GHz Fixed Modulus 8 | Zarlink Semiconductor Inc |
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ZL40813 | (ZL40813 - ZL40818) 13.5GHz Fixed Modulus Dividers | Zarlink Semiconductor |
ZL40814 | (ZL40813 - ZL40818) 13.5GHz Fixed Modulus Dividers | Zarlink Semiconductor |
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