Page 1 of 7
Document No. 70-0050-04
www.psemi.com
2005 Peregrine Semiconductor Corp. All rights reserved.
V
DD
= 3.0 V, -40 C
T
A
85 C,
unless otherwise specified
The PE3503 is a high performance monolithic UltraCMOSTM
prescaler with a fixed divide ratio of 8. Its operating frequency
range is 1500 MHz to 3500 MHz. The PE3503 operates on a
nominal 3 V supply and draws only 12 mA. It is packaged in a
small 8-lead MSOP and is ideal for microwave PLL synthesis
solutions.
The PE3503 is manufactured in Peregrine's patented Ultra
Thin Silicon (UTSi) CMOS process, offering the performance
of GaAs with the economy and integration of conventional
CMOS.
Product Specification
3500 MHz Low Power UltraCMOSTM
Divide-by-8 Prescaler
Product Description
Figure 1. Functional Schematic Diagram
PE3503
Features
High-frequency operation: 1500 MHz
to 3500 MHz
Fixed divide ratio of 8
Low-power operation: 12 mA typical
@ 3 V across frequency
Small package: 8-lead MSOP
Table 1. Electrical Specifications
(Z
S
= Z
L
= 50
)
Figure 2. Package Type
8-lead MSOP
D
QB
Q
CLK
D
QB
Q
CLK
Pre-Amp
Output
Buffer
IN
OUT
D
QB
Q
CLK
Parameter Conditions
Minimum
Typical
Maximum
Units
Supply Voltage
2.85
3.0
3.15
V
Supply Current
12
17
mA
Frequency Range (F
IN
)
1500
3500
MHz
Input Power (P
IN
) 1500
MHz
F
in
3200 MHz
-10
+5
dBm
3200 MHz < F
in
3500 MHz
0
+5
dBm
Output Power
-5
dBm
Product Specification
PE3503
Page 2 of 7
2005 Peregrine Semiconductor Corp. All rights reserved.
Document No. 70-0050-04
UltraCMOSTM RFIC Solutions
Table 2. Pin Descriptions
Table 3. Absolute Maximum Ratings
Electrostatic Discharge (ESD) Precautions
When handling this UltraCMOSTM device, observe
the same precautions that you would use with
other ESD-sensitive devices. Although this device
contains circuitry to protect it from damage due to
ESD, precautions should be taken to avoid
exceeding the rating specified in Table 3.
Latch-Up Avoidance
Unlike conventional CMOS devices, UltraCMOSTM
devices are immune to latch-up.
Figure 3. Pin Configuration (Top View)
Device Functional Considerations
The PE3503 takes an input signal frequency from
1500 MHz to 3500 MHz and produces an output
signal frequency one-eighth that of the supplied
input. In order for the prescaler to work properly,
several conditions need to be adhered to. It is
crucial that pin 3 be supplied with a bypass
capacitor to ground. In addition, the input and
output signals (pins 2 & 7, respectively) need to
be AC coupled via an external capacitor as shown
in the test circuit in Figure 7.
The ground pattern on the board should be made
as wide as possible to minimize ground
impedance.
Absolute Maximum Ratings are those values
listed in the above table. Exceeding these values
may cause permanent device damage. Exposure
to absolute maximum ratings for extended periods
may affect device reliability.
3503
1
2
3
4
8
7
6
5
IN
GND
DEC
GND
OUT
V
DD
GND
GND
Pin
No.
Pin
Name
Description
1 V
DD
Power supply pin. Bypassing is required.
2 IN
Input signal pin. Should be coupled with a
capacitor (eg 15 pF)
3 DEC
Power supply decoupling pin. Place a
capacitor as close as possible and connect
directly to the ground plane (eg 10 nF and
10 pF).
4 GND
Ground pin. Ground pattern on the board
should be as wide as possible to reduce
ground impedance.
5 GND
Ground
pin.
6 GND
Ground
pin.
7 OUT
Divided frequency output pin. This pin
should be coupled with a capacitor (eg 100
pF).
8 GND
Ground
pin.
Symbol Parameter/Conditions
Min
Max
Units
V
DD
Supply voltage
4.0
V
T
ST
Storage temperature range
-65
150
C
T
OP
Operating temperature
range
-40 85 C
V
ESD
ESD voltage (Human Body
Model)
250
V
P
INMAX
Maximum input power
10
dBm
Product Specification
PE3503
Page 3 of 7
2005 Peregrine Semiconductor Corp. All rights reserved.
Document No. 70-0050-04
www.psemi.com
-30
-25
-20
-15
-10
-5
0
0.5
1.5
2.5
3.5
4.5
Frequency (GHz)
S
e
n
s
it
iv
it
y
(
d
B
m
)
25C
-40C
85C
Figure 4. Input Sensitivity
Figure 5. Device Current
Typical Performance Data
Figure 6. Output Power
8
9
10
11
12
13
14
15
0.5
1.5
2.5
3.5
4.5
Frequency (GHz)
Cu
r
r
e
n
t
(
m
A)
25C
-40C
85C
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.5
1.5
2.5
3.5
4.5
Frequency (GHz)
Po
w
e
r
(
d
B
m
)
25C
-40C
85C
Product Specification
PE3503
Page 4 of 7
2005 Peregrine Semiconductor Corp. All rights reserved.
Document No. 70-0050-04
UltraCMOSTM RFIC Solutions
Figure 7. Test Circuit Block Diagram
Figure 8. High Frequency System Application
The wideband frequency of operation of the PE3503 makes it an ideal part for use in a
DBS downconverter system.
Signal Generator
Spectrum
Analyzer
PE3503
1
2
3
4
8
7
6
5
10 pF
15 pF
50
VDD
3 V +/- 0.15 V
1000 pF
100 pF
10 pF
10 nF
50
+
-
BPF
SAW
AGC
FM
DEMOD
PE3503
PE3291
LOW NOISE
PLL SYNTH
LPF
INPUT FROM
DBS 1
ST
IF
BASEBAND
OUTPUT
DIVIDE-BY-8
Product Specification
PE3503
Page 5 of 7
2005 Peregrine Semiconductor Corp. All rights reserved.
Document No. 70-0050-04
www.psemi.com
Evaluation Kit
Figure 9. Evaluation Board Layouts
Figure 10. Evaluation Board Schematic
Peregrine Specification 102/0055
Peregrine Specification 101/0035
Applications Support
If you have a problem with your evaluation kit or if you
have applications questions call (858) 731-9400 and
ask for applications support. You may also contact us
by fax or e-mail:
Fax: (858) 731-9499
E-Mail: help@psemi.com
Evaluation Kit Operation
The MSOP Prescaler Evaluation Board was designed
to help customers evaluate the PE3503 Divide-by-8
Prescaler. On this board, the device input (pin 2) is
connected to connector J1 through a 50
transmission
line. A series capacitor (C3) provides the necessary
DC block for the device input. It is important to note
that the value of this capacitance will impact the
performance of the device. A value of 15 pF was found
to be optimal for this board layout; other applications
may require a different value.
The device output (pin 7) is connected to connector J3
through a 50
transmission line. A series capacitor
(C1) provides the necessary DC block for the device
output. Note that this capacitor must be chosen to
have a low impedance at the desired output frequency
the device. The value of 100 pF was chosen to provide
a wide operating range for the evaluation board.
The board is constructed of a two-layer FR4 material
with a total thickness of 0.031". The bottom layer
provides ground for the RF transmission lines. The
transmission lines were designed using a coplanar
waveguide above ground plane model with trace width
of 0.030", trace gaps of 0.007", dielectric thickness of
0.028", metal thickness of 0.0014" and
r
of 4.4. Note
that the predominate mode for these transmission lines
is coplanar waveguide. J2 provides DC power to the
device. Starting from the lower left pin, the second pin
to the right (J2-3) is connected to the device V
DD
pin
(1). Two decoupling capacitors (10 pF, 1000 pF) are
included on this trace. It is the responsibility of the
customer to determine proper supply decoupling for
their design application.
The DEC pin (3) must be connected to a low
impedance AC ground for proper device operation. On
the board, two decoupling capacitors (C6 = 10 nF, C4 =
10 pF), located on the back of the board, perform this
function.
Product Specification
PE3503
Page 6 of 7
2005 Peregrine Semiconductor Corp. All rights reserved.
Document No. 70-0050-04
UltraCMOSTM RFIC Solutions
Table 4. Ordering Information
Figure 11. Package Drawing
8-lead MSOP
FRONT VIEW
2.950.10
0.08
A B C
0.33
+0.07
-0.08
0.10
A
0.100.05
3.000.10
0.860.08
1.10 MAX
- C -
- A -
1
0.65BSC
0.510.13
2.450.10
0.510.13
2X
8
3.000.10
.25 A B C
2
3
4
- B -
.525BSC
TOP VIEW
5
6
7
4.900.15
3.000.10
SIDE VIEW
2.950.10
Order Code
Part Marking
Description
Package
Shipping Method
3503-21
3503
PE3503-08MSOP-50A
8-lead MSOP
50 units / Tube
3503-22
3503
PE3503-08MSOP-2000C
8-lead MSOP
2000 units / T&R
3503-00
PE3503-EK
PE3503-08MSOP-EK
Evaluation Kit
1 / Box
3503-52
3503
PE3503G-08MSOP-2000C
Green 8-lead MSOP
2000 units / T&R
3503-51
3503
PE3503G-08MSOP-50A
Green 8-lead MSOP
50 units / Tube
Product Specification
PE3503
Page 7 of 7
2005 Peregrine Semiconductor Corp. All rights reserved.
Document No. 70-0050-04
www.psemi.com
Sales Offices
The Americas
Peregrine Semiconductor Corp.
9450 Carroll Park Drive
San Diego, CA 92121
Tel 858-731-9400
Fax 858-731-9499
North Asia Pacific
Peregrine Semiconductor K.K.
5A-5, 5F Imperial Tower
1-1-1 Uchisaiwaicho, Chiyoda-ku
Tokyo 100-0011 Japan
Tel: +81-3-3503-5211
Fax: +81-3-3503-5213
Europe
Peregrine Semiconductor Europe
Commercial Products:
Btiment Maine
13-15 rue des Quatre Vents
F- 92380 Garches, France
Tel: +33-1-47-41-91-73
Fax : +33-1-47-41-91-73
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180 Rue Jean de Guiramand
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Tel: +33(0) 4 4239 3361
Fax: +33(0) 4 4239 7227
For a list of representatives in your area, please refer to our Web site at: www.psemi.com
Data Sheet Identification
Advance Information
The product is in a formative or design stage. The data
sheet contains design target specifications for product
development. Specifications and features may change in
any manner without notice.
Preliminary Specification
The data sheet contains preliminary data. Additional data
may be added at a later date. Peregrine reserves the right
to change specifications at any time without notice in order
to supply the best possible product.
Product Specification
The data sheet contains final data. In the event Peregrine
decides to change the specifications, Peregrine will notify
customers of the intended changes by issuing a DCN
(Document Change Notice).
The information in this data sheet is believed to be reliable.
However, Peregrine assumes no liability for the use of this
information. Use shall be entirely at the user's own risk.
No patent rights or licenses to any circuits described in this
data sheet are implied or granted to any third party.
Peregrine's products are not designed or intended for use in
devices or systems intended for surgical implant, or in other
applications intended to support or sustain life, or in any
application in which the failure of the Peregrine product could
create a situation in which personal injury or death might occur.
Peregrine assumes no liability for damages, including
consequential or incidental damages, arising out of the use of
its products in such applications.
The Peregrine name, logo, and UTSi are registered trademarks
and UltraCMOS is a trademark of Peregrine Semiconductor
Corp.
South Asia Pacific
Peregrine Semiconductor
28G, Times Square,
No. 500 Zhangyang Road,
Shanghai, 200122, P.R. China
Tel: +86-21-5836-8276
Fax: +86-21-5836-7652
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