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Zarlink Semiconductor
Zarlink Semiconductor

ZL40818 Datasheet Preview

ZL40818 Datasheet

(ZL40813 - ZL40818) 13.5GHz Fixed Modulus Dividers

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ZL40818 pdf
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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.



Zarlink Semiconductor
Zarlink Semiconductor

ZL40818 Datasheet Preview

ZL40818 Datasheet

(ZL40813 - ZL40818) 13.5GHz Fixed Modulus Dividers

No Preview Available !

ZL40818 pdf
ZL40813/14/18
Data Sheet
Vcc INPUT
INPUT
INPUT B
GND
1
2
3
4
8 Vcc OUTPUT
7 OUTPUT
6 OUTPUT B
5 GND
SOIC (N) E-Pad
Figure 2 - Pin Connections - Top View
1.0 Application Configuration
Figure 3 shows a recommended application configuration. This example shows the devices set up for single-ended
input and differential output operation.
C8:10nF
R2:100 Ohm
C4:100pF
C5:100pF
R1:50 Ohm
1
2
3
4
C3:100pF C2:10nF C1:10uF
8
C6:100pF
7
6
C7:100pF
5
RL:50 Ohm
Figure 3 - Recommended circuit configuration.
The above circuit diagram shows some components in dotted lines. These are optional in many applications.
1. C1 (10 µF) and C2 (10 nF) power supply decoupling capacitors may be available on the board already.
2. R2 (100 Ohm) and C8 (10 nF) can be included if further power supply decoupling is required for the first stage
biasing circuit. This may optimise the noise and jitter performance. The values are suggestions and may have
to be modified if the existing supplies are particularly noisy.
3. R1 (50 Ohm), in series with C5 (100 pF), may reduce feedthrough of the input signal to the output.
2
Zarlink Semiconductor Inc.


Part Number ZL40818
Description (ZL40813 - ZL40818) 13.5GHz Fixed Modulus Dividers
Maker Zarlink Semiconductor
Total Page 15 Pages
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