DATA SHEET
BIPOLAR DIGITAL INTEGRATED CIRCUIT
µ
PB1505GR
3.0 GHz PRESCALER DIVIDED BY 256, 128, 64
FOR BS/CS TUNER
DESCRIPTION
µ
PB1505GR is a silicon prescaler IC operating up to 3.0 GHz and divided by 256, 128, 64. Due to 3.0 GHz operation and
high division, this IC can contribute to produce BS/CS tuners with kit-use of 17K series DTS controller or standard CMOS
PLL IC. The package is 8 pin plastic SOP suitable for surface mounting.
This IC is manufactured using NEC’s 20 GHz f
T
NESAT™
III
silicon bipolar process. This process uses silicon nitride
passivation film and gold electrodes. These materials can protect the chips from external pollution and prevent corrosion/
migration. Thus, this IC has with excellent performance, uniformity and reliability.
FEATURES
•
•
•
•
•
High toggle-frequency : 0.5 GHz to 3.0 GHz
Low power-consumption : 14 mA
TYP.
at 5 V
High divide-ratio :
÷256, ÷128, ÷64
High input-sensitivity : –14 to +10 dBm @ 1.0 GHz to 2.7 GHz
Wide output-swing : 1.6 V
p-p
(C
L
= 8 pF load)
ORDERING INFORMATION
PART NUMBER
PACKAGE
8 pin plastic SOP
(225 mil)
SUPPLYING FORM
Embossed tape 12 mm wide. QTY 2.5 k/reel
Pin 1 is in tape pull-out direction.
µ
PB1505GR-E1
Remarks
To order evaluation samples, please contact your local NEC sales office. (Order number :
µ
PB1505GR)
PIN ASSIGNMENT (Top View)
IN
1
8
IN
V
CC
2
7
GND
SW1
3
6
SW2
OUT
4
5
GND
Caution electro-static sensitive devices
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability
and additional information.
Document No. P10872EJ3V0DS00 (3rd edition)
Date Published October 1999 N CP(K)
Printed in Japan
The mark
shows major revised points.
©
1996,1999
µ
PB1505GR
SELECTOR GUIDE
FEATURES
2.5 GHz /
÷512, ÷256
2.5 GHz /
÷128, ÷64
3.0 GHz /
÷256, ÷128, ÷64
PRODUCT
NUMBER
I
CC
(mA)
28
26
14
f
in
(GHz)
0.5 to 2.5
0.5 to 2.5
0.5 to 3.0
V
CC
(V)
5
5
5
PACKAGE
8 pin SOP
8 pin SOP
8 pin SOP
PIN ASSIGNMENT
NEC original
Typical of prescaler
µ
PB586G
µ
PB588G
µ
PB1505GR
Notice
Typical performance. Please refer to Electrical Characteristics in detail.
To know the associated products, please refer to their latest data sheets.
INTERNAL BLOCK DIAGRAM
V
CC
2
INPUT 1
1 / 64
BYPASS 8
1/2
1/2
Buff.
4
OUTPUT
5, 7
GND
3
SW1
6
SW2
PIN DESCRIPTIONS
PIN NO.
1
SYMBOL
IN
ASSIGNMENT
Frequency input
pin
2
V
CC
Power supply pin
FUNCTIONS AND EXPLANATION
Input frequency from an external VCO output.
Must be coupled with capacitor (e.g. 1 000 pF) for DC cut.
Supply voltage 5.0±0.5 V for operation. Must be connected bypass capacitor
(e.g. 1 000 pF) to minimize ground impedance.
3
SW1
Divided ratio
control input pin 1
SW2
6
SW2
Divided ratio
control input pin 2
SW1
L
4
OUT
Divided frequency
output pin
5
7
GND
Ground pin
1/128
1/256
H
H
1/64
L
1/128
Divided ratio control can be governed by following input data to these pins.
This frequency output can be interfaced to CMOS PLL.
Must be coupled with capacitor (e.g. 1 000 pF) for DC cut.
This pin must be connected to the system ground with minimum inductance.
Ground pattern on the board should be formed as wide as possible.
(Track length should be kept as short as possible.)
8
IN
Frequency-input
bypass pin
This pin must be connected bypass capacitor (e.g. 1 000 pF) to minimize ground
impedance.
2
Data Sheet P10872EJ3V0DS00
µ
PB1505GR
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply voltage
Input voltage
Power dissipation
Operating temperature
Storage temperature
SYMBOL
V
CC
V
IN
P
D
T
opt
T
stg
RATING
–0.5 to +6
–0.5 to V
CC
+0.5
250
–40 to +85
–55 to +150
UNIT
V
V
mW
°C
°C
T
A
= +25
°C
T
A
= +25
°C
Mounted on 50
×
50
×
1.6 mm double copper clad
epoxy glass PWB (T
A
= +85
°C)
CONDITIONS
RECOMMENDED OPERATING RANGE
PARAMETER
Supply voltage
Operating temperature
SYMBOL
V
CC
T
opt
MIN.
4.5
–40
TYP.
5.0
+25
MAX.
5.5
+85
UNIT
V
°C
ELECTRICAL CHARACTERISTICS (T
A
= –40 to +85
°
C, V
CC
= 4.5 to 5.5 V)
PARAMETER
Circuit current
Upper response frequency 1
Upper response frequency 2
Lower response frequency 1
Lower response frequency 2
Input sensitivity 1
Input sensitivity 2
Input sensitivity 3
Output Swing
SW1 input voltage (H)
SW1 input voltage (L)
SW2 input voltage (H)
SW2 input voltage (L)
SYMBOL
I
CC
f
in(U)1
f
in(U)2
f
in(L)1
f
in(L)2
P
in1
P
in2
P
in3
V
OUT
V
IH1
V
IL1
V
IH2
V
IL2
–10
–14
–10
1.3
V
CC
OPEN
V
CC
OPEN
1.6
V
CC
OPEN
V
CC
OPEN
V
CC
OPEN
V
CC
OPEN
MIN.
9.0
3.0
2.7
0.5
1.0
+8
+10
+10
TYP.
14.0
MAX.
19.5
UNIT
mA
GHz
GHz
GHz
GHz
dBm
dBm
dBm
V
P-P
V
V
V
V
CONDITIONS
No input signal
P
in
= –10 to +10 dBm
P
in
= –14 to –10 dBm
P
in
= –10 to +8 dBm
P
in
= –14 to –10 dBm, +8 to +10 dBm
f
in
= 0.5 to 1.0 GHz
f
in
= 1.0 to 2.7 GHz
f
in
= 2.7 to 3.0 GHz
C
L
= 8 pF
Data Sheet P10872EJ3V0DS00
3
µ
PB1505GR
TEST CIRCUIT
1 000 pF
1
50
Ω
S.G.
2
V
CC
GND
7
C
1
IN
IN
8
C
4
1 000 pF
3
SW1
SW2
6
1 000 pF
4
C
3
OUT
GND
5
V
CC
= +5.0 V ±10 %
Divided Ratio Control
1 000 pF
C
2
5 pF
C
5
1 MΩ
3 pF
H
SW1
OSCILLOSCOPE
L
1/128
1/256
H
1/64
MONITOR
SW2
L
1/128
ILLUSTRATION OF TEST CIRCUIT ASSEMBLED ON EVALUATION BOARD
KB-1505
IN
1
C
4
V
CC
C2
C
1
B
SW1
SW2
A
C
3
C
5
OUT
COMPONENT LIST
No.
C1 to C4
C5
A, B
Value
1 000 pF
5 pF
shorting chip
Note :
(*1)
50
×
50
×
0.4 mm double copper clad polyimide board
(*2)
Back side : GND pattern
(*3)
Solder plated on pattern
(*4)
: Through holes
(*5)
pattern should be removed on this testing.
4
Data Sheet P10872EJ3V0DS00
µ
PB1505GR
TYPICAL CHARACTERISTICS (Unless otherwise specified T
A
= +25
°
C)
CIRCUIT CURRENT vs. SUPPLY VOLTAGE
20
P
in
– Input Power Level – dBm
INPUT POWER vs. FREQUENCY
40
I
CC
– Circuit Current – mA
20
V
CC
= 4.5 to 5.5 V Guaranteed operating
range
0
–20
10
–40
–60
V
CC
= 4.5 to 5.5 V
0.2
0.5
1.0
2.0
5.0
0
2.0
4.0
6.0
V
CC
– Supply Voltage – V
f – Input Frequency – GHz
OUTPUT SWING vs. FREQUENCY
2.0
V
OUT
– Output Swing – V
P-P
X
X
X
X
X
X
OUTPUT POWER vs. FREQUENCY
–6
P
O
– Output Power Level – dBm
X
: V
CC
= 5.5 V
T
A
= –40 °C
P
in
= –10 dBm : V
CC
= 5.0 V
: V
CC
= 4.5 V
1.8
–8
1.6
X
–10
X
X
X
X
X
X X X X
X
X
X
X
X X
1.4
X
–12
1.2
1.0
X
:
0.2
0.5
1.0
V
CC
= 5.5 V
: V
CC
= 5.0 V
: V
CC
= 4.5 V
2.0
5.0
–14
0.2
0.5
1.0
2.0
5.0
f – Input Frequency – GHz
f – Input Frequency – GHz
OUTPUT POWER vs. FREQUENCY
–6
P
O
– Output Power Level – dBm
P
O
– Output Power Level – dBm
X
: V
CC
= 5.5 V
T
A
= +25 °C
P
in
= –10 dBm : V
CC
= 5.0 V
: V
CC
= 4.5 V
OUTPUT POWER vs. FREQUENCY
–6
X
: V
CC
= 5.5 V
T
A
= +85 °C
P
in
= –10 dBm : V
CC
= 5.0 V
: V
CC
= 4.5 V
–8
–8
X
X
X
X
X X X X
X
X
X
X
X
–10
X
X
X
X
X
X X X X
X
X
X X
X X
–10
X
–12
–12
–14
0.2
0.5
1.0
2.0
5.0
–14
0.2
0.5
1.0
2.0
5.0
f – Input Frequency – GHz
f – Input Frequency – GHz
Data Sheet P10872EJ3V0DS00
5
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