BIPOLAR DIGITAL INTEGRATED CIRCUIT
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PB1508GV
3 GHz INPUT DIVIDE BY 2 PRESCALER IC
FOR DBS TUNERS
1996©
Document No. P10768EJ2V0DS00 (2nd edition)
Date Published September 1997 N
Printed in Japan
DATA SHEET
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PB1508GV is a 3.0 GHz input divide by 2 prescaler IC for DBS tuner applications.
µ
PB1508GV can make
VHF/UHF band PLL frequency synthesizer apply to DBS/ECS tuners.
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PB1508GV is a shrink package version of
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PB584G so that this small package contributes to reduce the mounting space.
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PB1508GV is manufactured using NEC’s high fT NESAT™ IV silicon bipolar process. This process uses silicon
nitride passivation film and gold electrodes. These materials can protect chip surface from external pollution and
prevent corrosion/migration. Thus, this IC has excellent performance, uniformity and reliability.
FEATURES
• High toggle frequency : fin = 0.5 GHz to 3.0 GHz
• High-density surface mounting : 8 pin plastic SSOP (175 mil)
• Low current consumption : 5 V, 12 mA
• Fixed division : ÷2
APPLICATION
• Prescaler between local oscillator and PLL frequency synthesizer included modulus prescaler
• DBS tuners with kit use of VHF/UHF band PLL frequency synthesizer
ORDERING INFORMATION
PART NUMBER PACKAGE MARKING SUPPLYING FORM
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PB1508GV-E1 8 pin plastic SSOP
(175 mil) 1508 Embossed tape 8 mm wide. Pin 1 is in tape pull-out
direction. 1 000 p/reel.
Remarks To order evaluation samples, please contact your local NEC sales office.
(Part number for sample order:
µ
PB1508GV)
Caution: Electro-static sensitive devices
2
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PB1508GV
PIN CONNECTION (Top View)
Pin No. Pin name
1V
CC
2IN
3IN
4 GND
5 GND
6NC
7 OUT
8NC
PRODUCT LINE-UP
Product No. ICC (mA) fin (GHz) VCC (V) Package Pin Connection
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PB581A 30 0.5 to 2.8 4.5 to 5.5 8 pins CAN –
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PB581C 30 0.5 to 2.2 4.5 to 5.5 8 pins DIP (300 mil) NEC Original
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PB584G 18 0.5 to 2.5 4.5 to 5.5 8 pins SOP (225 mil) NEC Original
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PB1508GV 12 0.5 to 3.0 4.5 to 5.5 8 pins SSOP (175 mil)
Remarks This table shows the TYP values of main parameters. Please refer to ELECTRICAL
CHARACTERISTICS.
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PB581A,
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PB581C and
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PB584G are discontinued.
INTERNAL BLOCK DIAGRAM
IN
IN CLK
CLK
D
Q
QOUT
AMP
SYSTEM APPLICATION EXAMPLE
RF unit block of DBS tuners
1stIF input
from DBS converter MIX
BPF
OSC
LPF
PB1508GV
µ
÷ 2
Prescaler
PLLsynth.
for VHF/UHF
band
SAW AGC amp. FM demo.
Baseband output
1
2
3
4
8
7
6
5
3
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PB1508GV
PIN EXPLANATION
Pin No. Symbol Applied voltage PIN voltage Functions and explanation
1V
CC 4.5 to 5.5 Power supply pin. This pin must be equipped with bypass
capacitor (eg 1 000 pF) to minimize ground impedance.
2IN 1.7 to 4.95 Signal input pin. This pin should be coupled to signal
source with capacitor (eg 1 000 pF) for DC cut.
3IN 1.7 to 4.95 Signal input bypass pin. This pin must be equipped with
bypass capacitor (eg 1 000 pF) to minimize ground
impedance.
4, 5 GND 0 Ground pin. Ground pattern on the board should be
formed as wide as possible to minimize ground
impedance.
6, 8 NC
Non connection pins. These pins should be opened.
7 OUT 1.0 to 4.7 Divided frequency output pin. This pin is designed as
emitter follower output. This pin can be connected to
input of prescaler within PLL synthesizer through DC cut
capacitor.
4
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PB1508GV
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL CONDITION RATINGS UNIT
Supply voltage VCC TA = +25 °C 6.0 V
Input voltage Vin TA = +25 °C 6.0 V
Total power dissipation PDMounted on double sided copper clad
50 × 50 × 1.6 mm epoxy glass PWB (TA = +85 °C) 250 mW
Operating ambient temperature TA−40 to +85 °C
Storage temperature Tstg −55 to +150 °C
RECOMMENDED OPERATING CONDITIONS
PARAMETER SYMBOL MIN. TYP. MAX. UNIT REMARKS
Supply voltage VCC 4.5 5.0 5.5 V
Operating ambient temperature TA−40 +25 +85 °C
ELECTRICAL CHARACTERISTICS (TA = −
−−
−40 to +85 °
°°
°C, VCC = 4.5 to 5.5 V, ZS = ZL = 50 Ω
ΩΩ
Ω)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Circuit current ICC No signals 7.6 12 14.5 mA
Upper limit operating frequency 1 fin(U)1 Pin = −10 to +6 dBm 3.0
GHz
Upper limit operating frequency 2 fin(U)2 Pin = −15 to +6 dBm 2.7
GHz
Lower limit operating frequency fin(L) Pin = −15 to +6 dBm 0.5 GHz
Input power 1 Pin1 fin = 2.7 to 3.0 GHz −10 +6 dBm
Input power 2 Pin2 fin = 0.5 to 2.7 GHz −15 +6 dBm
Output power Pout Pin = 0 dBm, fin = 2 GHz −12 −7dBm
5
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PB1508GV
TYPICAL CHARACTERISTICS (unless otherwise specified TA = +25°C)
15
10
5
00123
V
CC
- Supply Voltage - V
I
CC
- Circuit Current - mA
456
CIRCUIT CURRENT vs. SUPPLY VOLTAGE
No signals
T
A
= +85 ˚C
T
A
= +25 ˚C T
A
= –40 ˚C
+20
+10
0
–10
–20
–30
–40
–50
–60
100 1000 4000
f
in
- Input Frequency - MHz
P
in
- Input Power - dBm
P
in
- Input Power - dBm
P
out
- Output Power - dBm
P
out
- Output Power - dBm
INPUT POWER vs. INPUT FREQUENCY +20
+10
0
–10
–20
–30
–40
–50
–60
100 1000 4000
f
in
-Input Frequency - MHz
f
in
- Input Frequency - MHz f
in
-Input Frequency - MHz
INPUT POWER vs. INPUT FREQUENCY
OUTPUT POWER vs. INPUT FREQUENCY OUTPUT POWER vs. INPUT FREQUENCY
0
–2
–4
–6
–8
–10
–12
–14
–16
0
–2
–4
–6
–8
–10
–12
–14
–16
100 1000 4000 100 1000 4000
T
A
= +25 ˚C
V
CC
= 5.0 V
P
in
= 0 dBm
Z
L
= 50 Ω
T
A
= +25 ˚C
P
in
= 0 dBm
Z
L
= 50 Ω
V
CC
= 4.5 to 5.5 V
V
CC
= 4.5 to 5.5 V
V
CC
= 4.5 to 5.5 V
T
A
= –40 ˚C
T
A
= –40 ˚C
T
A
= +25 ˚C
T
A
= +25 ˚C
T
A
= +85 ˚C
T
A
= +85 ˚C
V
CC
= 4.5 V
V
CC
= 5.0 V
V
CC
= 5.5 V
T
A
= –40 ˚C
T
A
= –40 ˚C
T
A
= +25 ˚C
T
A
= +25 ˚C
T
A
= +85 ˚C
T
A
= +85 ˚C
Guaranteed
Operating
Window
Guaranteed
Operating
Window
6
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PB1508GV
0
–2
–4
–6
–8
–10
–12
–14
–16
0
–2
–4
–6
–8
–10
–12
–14
–16
100 1000 4000
f
in
- Input Frequency - MHz
P
out
- Output Power - dBm
OUTPUT POWER vs. INPUT FREQUENCY
f
in
- Input Frequency - MHz
P
out
- Output Power - dBm
OUTPUT POWER vs. INPUT FREQUENCY
100 1000 4000
T
A
= –40 ˚C
P
in
= 0 dBm
Z
L
= 50 Ω
T
A
= +85 ˚C
P
in
= 0 dBm
Z
L
= 50 Ω
V
CC
= 4.5 V
V
CC
= 4.5 V
V
CC
= 5.0 V
V
CC
= 5.0 V
V
CC
= 5.5 V
V
CC
= 5.5 V
S11 vs. INPUT FREQUENCY
VCC = 5.0 V
S
11
Z
REF 1.0 Units
200.0 mUnits/
34.604 Ω –26.496 Ω
START 0.500000000 GHz
STOP 3.000000000 GHz
MARKER 4
3.0 GHz
4
hp
C
D : 500 MHz
: 1000 MHz
: 2000 MHz
: 3000 MHz
1
2
3
4
4
2
3
1
FREQUENCY S11
MHz MAG ANG
500.0000 .850 –30.2
600.0000 .796 –37.8
700.0000 .790 –39.2
800.0000 .754 –45.2
900.0000 .766 –53.7
1000.0000 .701 –57.6
1100.0000 .660 –62.3
1200.0000 .606 –67.2
1300.0000 .571 –70.3
1400.0000 .521 –70.6
1500.0000 .495 –68.3
1600.0000 .441 –60.6
1700.0000 .479 –45.1
1800.0000 .602 –62.3
1900.0000 .595 –74.2
2000.0000 .608 –82.9
2100.0000 .603 –89.8
2200.0000 .599 –97.3
2300.0000 .588 –107.7
2400.0000 .532 –122.0
2500.0000 .396 –132.0
2600.0000 .325 –127.1
2700.0000 .270 –123.6
2800.0000 .232 –122.7
2900.0000 .258 –105.8
3000.0000 .351 –103.7
7
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PB1508GV
S22 vs. OUTPUT FREQUENCY
VCC = 5.0 V, fin = 498 MHz
S22 Z
REF 1.0 Units
200.0 mUnits/
87.789 Ω –13.633 Ω
START 0.250000000 GHz
STOP 1.500000000 GHz
MARKER 4
1.5 GHz
4
hp
C
D : 250 MHz
: 500 MHz
: 1000 MHz
: 1500 MHz
1
2
3
4
4
3
2
1
S22 vs. OUTPUT FREQUENCY
VCC = 5.0 V, fin = 3002 MHz
S22 Z
REF 1.0 Units
200.0 mUnits/
91.109 Ω 2.6523 Ω
START 0.250000000 GHz
STOP 1.500000000 GHz
MARKER 4
1.5 GHz
4
hp
C
D : 250 MHz
: 500 MHz
: 1000 MHz
: 1500 MHz
1
2
3
4
4
3
2
1
FREQUENCY S22
MHz MAG ANG
250.0000 .526 118.9
300.0000 .463 131.2
350.0000 .466 124.7
400.0000 .460 117.1
450.0000 .441 110.2
500.0000 .456 103.0
550.0000 .353 94.8
600.0000 .438 91.1
650.0000 .444 83.9
700.0000 .436 78.3
750.0000 .435 71.8
800.0000 .431 65.9
850.0000 .431 60.3
900.0000 .431 53.7
950.0000 .408 49.2
1000.0000 .445 44.9
1050.0000 .428 41.0
1100.0000 .429 33.7
1150.0000 .355 42.7
1200.0000 .418 20.0
1250.0000 .403 17.1
1300.0000 .392 9.6
1350.0000 .368 3.3
1400.0000 .343 –3.4
1450.0000 .319 –9.2
1500.0000 .289 –14.1
FREQUENCY S22
MHz MAG ANG
250.0000 .555 146.6
300.0000 .545 139.9
350.0000 .571 136.1
400.0000 .529 127.9
450.0000 .521 122.4
500.0000 .515 116.9
550.0000 .510 104.5
600.0000 .492 106.6
650.0000 .487 100.9
700.0000 .482 95.3
750.0000 .473 89.9
800.0000 .461 83.8
850.0000 .454 78.4
900.0000 .449 72.3
950.0000 .430 69.6
1000.0000 .443 64.3
1050.0000 .444 58.8
1100.0000 .440 52.3
1150.0000 .438 46.0
1200.0000 .501 37.5
1250.0000 .408 32.9
1300.0000 .388 25.1
1350.0000 .359 16.3
1400.0000 .335 9.7
1450.0000 .304 3.1
1500.0000 .285 4.6
8
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PB1508GV
TEST CIRCUIT
50 Ω
Signal Generator
1000 pF
1000 pF
1000 pF
OPEN
OPEN
1000 pF 50 Ω
(Spectrum Analyzer)
Counter HP5350B
8
7
6
5
1
2
3
4
C2
C3
C4
1000 pF
C1
HP8665A
Power Supply
5 V±0.5 V
9
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PB1508GV
ILLUSTRATION OF THE TEST CIRCUIT ASSEMBLED ON EVALUATION BOARD
IN
PB1506/08/09GV
OUT
IN OUT
C1
C3
C2 C4
1P
VCC
,
,,,
,,,,,
,,,,,
,,,,
,,
,,
,
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COMPONENT LIST
SYMBOL VALUE
C1 to C4 1000 pF
The application circuits and their parameters are for reference only and are not intended for use in actual design-ins.
EVALUATION BOARD CHARACTERS
(1) 35
µ
m thick double-sided copper clad 50 × 50 × 0.4 mm
polyimide board
(2) Back side: GND pattern
(3) Solder plated patterns
(4) ° : Through holes
(5)
,,
,,
of pin 3 : partern should be removed.
(6)
,,
,,
of pin 5 : short chip must be attached to be grounded.
10
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PB1508GV
PACKAGE DIMENSIONS
8 pin PLASTIC SSOP (175 mil) (unit : mm)
85
14
3.0 MAX.
1.5±0.1
1.8 MAX.
0.1±0.1
0.575 MAX. 0.65
0.3+0.10
–0.05 0.10
M
0.15
0.15+0.10
–0.05
0.5±0.2
3.2±0.1
4.94±0.2
0.87±0.2
3°+7°
–3°
11
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PB1508GV
NOTE CORRECT USE
(1) Observe precautions for handling because of electro-static sensitive devices.
(2) Form a ground pattern as wide as possible to minimize ground impedance (to prevent undesired operation).
(3) Keep the wiring length of the ground pins as short as possible.
(4) Connect a bypass capacitor (e.g. 1 000 pF) to the VCC pin.
RECOMMENDED SOLDERING CONDITIONS
This product should be soldered in the following recommended conditions. Other soldering methods and
conditions than the recommended conditions are to be consulted with our sales representatives.
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PB1508GV
Soldering method Soldering conditions Recommended condition symbol
Infrared ray reflow Package peak temperature: 235 °C,
Hour: within 30 s. (more than 210 °C),
Time: 3 times, Limited days: no.*
IR35-00-3
VPS Package peak temperature: 215 °C,
Hour: within 40 s. (more than 200 °C),
Time: 3 times, Limited days: no.*
VP15-00-3
Wave soldering Soldering tub temperature: less than 260 °C,
Hour: within 10 s.,
Time: 1 time, Limited days: no.
WS60-00-1
Pin part heating Pin area temperature: less than 300 °C,
Hour: within 3 s./pin,
Limited days: no.*
*It is the storage days after opening a dry pack, the storage conditions are 25 °C, less than 65 % RH.
Caution The combined use of soldering method is to be avoided (However, except the pin area heating
method).
For details of recommended soldering conditions for surface mounting, refer to information document
SEMICONDUCTOR DEVICE MOUNTING TECHNOLOGY MANUAL (C10535E).
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PB1508GV
ATTENTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
SENSITIVE
DEVICES
No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this
document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual
property rights of third parties by or arising from use of a device described herein or any other liability arising
from use of such device. No license, either express, implied or otherwise, is granted under any patents,
copyrights or other intellectual property rights of NEC Corporation or others.
While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices,
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or
property arising from a defect in an NEC semiconductor device, customers must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features.
NEC devices are classified into the following three quality grades:
"Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based on
a customer designated "quality assurance program" for a specific application. The recommended applications
of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each
device before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots
Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)
Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.
The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact an NEC sales representative in advance.
Anti-radioactive design is not implemented in this product.
M4 96. 5
