Advance Information
PE9308
Product Description
The PE9308 is a high-performance dynamic UltraCMOS™
prescaler ideal for Ku band Transceiver applications. It has a
fixed divide ratio of 4 with an operating frequency range of 4.0
GHz to 13.5 GHz. The PE9308 operates on a nominal 2.6 V
supply and draws only 15 mA. It is packaged in a small 8-lead
Flat Pack and is also available in Die form for Hybrid
application.
The PE9308 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.
13.5 GHz Low Power UltraCMOS™
Divide-by-4 Prescaler for
RAD-Hard Space Applications
Features
•
High-frequency operation: up to 13.5 GHz
•
Fixed divide ratio of 4
•
SEL Immune due to UltraCMOS™
•
SEU <10
-10
errors / bit-day
•
100 Krads (Si) Total Dose
•
Small package: 8-lead Formed Flat pack
•
Available as Die
•
Low-power operation:15 mA typical @ 2.6V
Figure 1. Functional Schematic Diagram
Figure 2. Package Type
8-lead CSOIC
D
SET
Q
Q
D
SET
Q
Q
IN
CLR
OUT
Output Buffer
CLR
Table 1. Electrical Specifications
(Z
S
= Z
L
= 50
Ω
)
V
DD
= 2.45< V
DD
<2.75 V, -40° C
≤
T
A
≤
85° C, unless otherwise specified
Parameter
Frequency
Supply Voltage
Supply Current
SSB Phase noise (PhN)
Input Power (P
in
)
Conditions
Minimum
4000
2.45
8
Typical
Maximum
13,500
Units
MHz
V
mA
dBc/Hz
2.6
15
-120
2.75
20
100 KHz Offset; Pin=0dBm
7.0 GHz
≤
F
in
≤
10.0 GHz
4.0 GHz < F
in
≤
7.0 GHz
0
+5
0
+10
+10
dBm
dBm
dBm
Output Power (P
out
)
4.0 GHz
≤
F
in
≤
10.0 GHz
Document No. 70-0187-01
│
www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 7
PE9308
Advance Information
Figure 3. Pin Configuration (Top View)
Electrostatic Discharge (ESD) Precautions
When handling this UltraCMOS™ 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, UltraCMOS™
devices are immune to latch-up.
Device Functional Considerations
V
DD1
1
2
8
7
NC
V
DD1
RF IN
NC
PE9308
3
4
6
5
RF OUT
V
DD2
NC
Table 2. Pin Descriptions
Pin
No.
1
2
3
4
5
6
7
8
Pin
Name
V
DD1
V
DD1
RF IN
NC
V
DD2
RF OUT
NC
NC
Description
DC Supply Voltage
DC Supply Voltage
RF Input
Not connected
DC Supply Voltage
RF Output.
Not connected
Not connected
The PE9308 takes an input signal frequency from
between 4.0 GHz to 13.5 GHz and produces an
output signal frequency one-fourth that of the
supplied input. In order for the prescaler to work
properly, several conditions need to be adhered
to. It is crucial that pins 1, 2 and 5 be supplied
with a bypass capacitor to ground. In addition, the
output signal (pins 6) needs to be ac coupled via
an external capacitor as shown in the test circuit
below.
The ground pattern on the board should be made
as wide as possible to minimize ground
impedance.
Table 3. Absolute Maximum Ratings
Symbol
V
DD
T
ST
T
OP
VESD
P
INMAX
Parameter/
Conditions
DC Supply voltage
Storage temperature
range
Operating temperature
range
ESD voltage (Human
Body Model)
Maximum input power
Min
Max
3.0
Units
V
°C
°C
V
dBm
-65
-40
150
85
250
14
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.
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 2 of 7
Document No. 70-0187-01
│
UltraCMOS™ RFIC Solutions
PE9308
Advance Information
Figure 4. Test Circuit Block Diagram
1
V
DD1
V
DD1
NC
NC
8
V
DD
2
0.01µF
10 pF
0.5 pF
3
IN
NC
7
Spectrum Analyzer
PE9308
OUT
V
DD2
6
6.8 pF
50Ω
50Ω
T Line*
4
5
T Line*
V
DD
0.5 pF
10 pF
0.01µF
RF Source
*T Line = Transmission Line
Figure 5. High Frequency System Application
The wideband frequency of operation of the PE9308 makes it an ideal part for use in a DBS
down converter system.
INPUT
DBS 1
st
BPF
SAW
AGC
IF
FM
DEMOD
BASEBAND
OUTPUT
DIVIDE BY 4
PE9701
PE9308
LOW NOISE
PLL SYNTH
LPF
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 3 of 7
Document No. 70-0187-01
│
UltraCMOS™ RFIC Solutions
PE9308
Advance Information
Figure 6: Input Power Sensitivity vs Input Frequency at Nominal Voltage, 25 °C
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
6.5
7
7.5
8
8.5
9
9.5
10
10.5
11
11.5
12
2.60V @ 25C
Pin (dBm)
12.5
13
13.5
Input Frequency (GHz)
Figure 7: Output Power vs Output Frequency at Nominal Voltage, 25 °C
10
8
6
4
2
0
-2
1.625
2.60V @ 25C
Pout (dBm)
1.825
2.025
2.225
2.425
2.625
2.825
3.025
3.225
Output Frequency (GHz)
Document No. 70-0187-01
│
www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 4 of 7
PE9308
Advance Information
Evaluation Kit
The Ceramic SOIC Prescaler Evaluation Board
was designed to help customers evaluate the
PE9308 divide-by-4 prescaler. On this board, the
device input (pin 3) is connected to the SMA
connector J2 through a 50
Ω
transmission line.
The device output (pin 6) is connected to SMA
connector J3 through a 50
Ω
transmission line.
J1 provides DC power to the device via pin
1,2,4,5,7,8.Multiple decoupling capacitors
(C4,5,8,9=10pF, C3,6,7,10=0.01uF) are used. It is
the responsibility of the customer to determine
proper supply decoupling for their design
application. The board is constructed using 4
layers. The top and bottom layers are comprised
of Rogers low loss 4350 material having a core
thickness of 0.010"; while the internal layers are
comprised of FR-4. The overall board thickness is
0.062".
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
Figure 8. Evaluation Board Layouts
Peregrine Specification 101/0186
Figure 9. Evaluation Board Schematic
Peregrine Specification 102/0247
Document No. 70-0187-01
│
www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 5 of 7
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