FUJITSU MB508

Sept. 1995
Edition 3.0a
DATA SHEET
MB508
2.3GHz TWO MODULUS PRESCALER
2.3GHz TWO MODULUS PRESCALER
The Fujitsu MB508 is a 2.3GHz two modulus prescaler used with a frequency
synthesizer to form a Phase Locked Loop (PLL) and divides the input frequency
by a modulus of 128/130, 256/258 or 512/514. The output level is 1.6V peak to
peak ECL level. The ultra high frequency operation provides wide application,
such as Direct Broadcasting Satellite System, CATV system, UHF Transceiver,
etc.
FEATURES
High Frequency Operation:
f = 2.3GHz max. (PIN = –4dBm min.)
Input Signal Amplitude:
VIN = 100mVp–p (fIN = 100MHz to 1.8GHz)
Pulse Swallow Function:
128/130, 256/258, 512/514
Power Dissipation:
120mW typ.
Wide Operation Temperature:
-40°C to +85°C
Stable Output Amplitude:
VOUT = 1.6Vp–p typ.
PLASTIC PACKAGE
DIP-08P-M01
PLASTIC PACKAGE
FPT-08P-M01
Complete PLL synthesizer circuit with the Fujitsu MB87001A, PLL
synthesizer system block IC
PIN ASSIGNMENT
Standard Plastic 8-pin Dual-In-Line Package or Flat Package
ABSOLUTE MAXIMUM RATINGS (See Note)
Rating
Symbol
Value
Unit
Power Supply Voltage
VCC
–0.5 to +7.0
V
Input Voltage
VIN
–0.5 to VCC
V
Output Current
IO
10
mA
Operating Temperature
TA
–40 to +85
°C
TSTG
–55 to +125
°C
Storage Temperature
Note:
Permanent device damage may occur if the above Absolute Maximum Ratings are
exceeded. Functional operation should be restricted to the conditions as detailed in
the operational sections of this data sheet. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
Copyright 1995 by FUJITSU LIMITED and FUJITSU MICROELECTRONICS
IN
1
VCC
2
8
IN
7
SW2
TOP VIEW
SW1
3
6
MC
OUT
4
5
GND
This device contains circuitry to protect the inputs against
damage due to high static voltages or electric fields. However,
it is advised that normal precautions be taken to avoid
application of any voltage higher than maximum rated voltages
to this high impedance circuit.
MB508
D Q
IN
IN
D Q
D Q
D Q
C
C
C M
C Q
SW2
SW1
D Q
SW
C Q
D Q
D Q
D Q
D Q
C Q
C Q
C Q
C Q
SW1
SW2
MC
Divide Ratio
H
H
H
1/128
H
H
L
1/130
H
L
H
1/256
L
H
H
1/256
H
L
L
1/258
L
H
L
1/258
L
L
H
1/512
L
L
L
1/514
D Q
SW
C Q
MC
Note:
SW: H = VCC, L = open
MC: H = 2.0V to VCC, L = GND to 0.8V
Figure 1. MB508 Block Diagram
PIN DESCRIPTION
2
Pin Number
Symbol
Descriptions
1
IN
2
VCC
Power Supply, +5V
3
SW1
Divide Ratio Control Input (See Divide Ratio Table)
4
OUT
Output
5
GND
Ground
6
MC
7
SW2
8
IN
Input
Modulus Control Input (See Divide Ratio Table)
Divide Ratio Control Input (See Divide Ratio Table)
Complementary Input
OUT
MB508
RECOMMENDED OPERATING CONDITIONS
Values
Parameter
Symbol
Power Supply Voltage
VCC
Output Current
IO
Operating Temperature
TA
Load Capacitance
CL
Unit
Min.
Typ.
Max.
4.5
5.0
5.5
1.2
–40
V
mA
+85
°C
12
pF
ELECTRICAL CHARACTERISTICS
(Recommended Operating Conditions unless otherwise noted.)
Values
Parameter
Symbol
Condition
Unit
Min.
Typ.
Max.
Power Supply Current
ICC
Output Amplitude
VO
Input Frequency
fIN
with input coupling
capacitor 1000pF
100
2300
PINA
fIN = 1800MHz to
2300MHz
–4
5.5
PINB
fIN = 100MHz to
1800MHz
–16
10
1.0
24
mA
1.6
Vp–p
Input Signal Amplitude
dBm
High Level Input Voltage for MC
VIHM
Low Level Input Voltage for MC
VILM
High Level Input Voltage for SW
VIHS*
Low Level Input Voltage for SW
VILS
High Level Input Current for MC
IIHM
VIH = 2.0V
Low Level Input Current for MC
IILM
VIL = 0.8V
High Level Input Current for SW
IIHS
VIH = VCC
Modulus Set-up Time MC to
Output at 2.3GHz Operation
tSET
Note:
MHz
2.0
VCC –0.1
V
VCC
0.8
V
VCC +0.1
V
Open
V
0.4
–0.2
mA
mA
18
250
µA
28
ns
*Design Guarantee
3
MB508
VCC = +5.0V + 10%
C3
Sampling scope input point
for input waveform
VCC
SW1
Sampling scope prober point
for output waveform
SW2
C1
OUT
IN
P.G.
50Ω
IN
RL
C2
CL
MC GND
MC Input
C1 : 1000pF
C2 : 1000pF
C3 : 0.1µF
CL : 12pF (including scope and jig capacitance)
RL : 2KΩ
Figure 2. Test Circuit
TIMING CHART (2 MODULUS)
Example: Divide ratio = 128/130
128
130
IN
64
64
64
66
OUT
64 64 64 64
64 64 66 64 66 64 64
MC
tSET
tSET
Note: When divide of 130 is selected, positive pulse is applied by two to 66.
The typical set up time is 18 ns from the MC signal input to the timing of change of prescaler divide ratio.
4
MINIMUM INPUT SIGNAL AMPLITUDE (mVp–p)
MB508
VCC = 5.0V
TA = 25°C
700
600
500
400
300
200
100
10
20
50
100 200
500 1000 2300 5000
INPUT FREQUENCY (MHz)
Figure 3. Input Signal Amplitude vs. Input Frequency
C1
VSX (Max. 8V)
VCC
VCC
VCC
10KΩ
C2
X1
12KΩ
16 15 14 13 12 11 10 9
VCO
MB 87001A
0.047µF
1
2 3 4
5 6
OUTPUT
12KΩ
VCC
7 8
100KΩ
10KΩ
33KΩ
47K
47K
47K
Data
Clock
LE
1000pF
1000pF
8
7
6
5
MB 508
VCC
1000pF
1
2
3
4
1000pF
2.2KΩ
X1
VCC
VSX
C1, C2
:
:
:
:
12.8MHz X’tal
5V + 10%
8V max.
depends on crystal oscillator
Lock
Det.
10KΩ
Figure 4. Typical Application Example
5
MB508
PACKAGE DIMENSIONS
(Suffix: –P)
8-LEAD PLASTIC DUAL IN-LINE PACKAGE
(CASE No: DIP-08P-M01)
.016
.370 – .012
0.40
9.40 – 0.30
15° MAX
INDEX
.244+.010
(6.20+0.25)
.012
.039 – 0
0.30
0.99 – 0
.012
.060 – 0
.300(7.62)
TYP
.010+.002
(0.25+0.05)
0.30
1.52 – 0
.014
.035 – .012
0.35
0.89 – 0.30
.172(4.36) MAX
.020(0.51)
MIN
.100(2.54)
.018+.003
TYP
(0.46+0.08)
 1988 FUJITSU LIMITED D08006-2C
6
.118(3.00) MIN
DImensions in
inches (millimeters)
MB508
PACKAGE DIMENSIONS (Continued)
(Suffix: –PF)
8-LEAD PLASTIC FLAT PACKAGE
(CASE No: FPT-08P-M01)
.010
.250 – .008
0.25
6.35 – 0.20
.089(2.25) MAX
(SEATED HEIGHT)
.002(0.05) MIN
(STAND OFF)
.307+.016
(7.80+0.40)
INDEX
.016
.268 – .008
.209+.012
(5.30+0.30)
0.40
6.80 – 0.20
.020+.008
(0.50+0.20)
.050(1.27)
.018+.004
(0.45+0.10)
TYP
∅ .005(0.13)
.002
.006 – .001
M
0.05
0.15 – 0.02
.150(3.81)
Details of “A” part
REF
“A”
.004(0.10)
 1988 FUJITSU LIMITED F08002S-3C
.008(0.20)
.020(0.50)
.007(0.18)
MAX
.027(0.68)
MAX
DImensions in
inches (millimeters)
All Rights Reserved.
Circuit diagrams utilizing Fujitsu products are included as a means of illustrating typical
semiconductor applications. Complete information sufficient for construction purposes is
not necessarily given.
The information contained in this document has been carefully checked and is believed to
be reliable. However, Fujitsu assumes no responsibility for inaccuracies.
The information contained in this document does not convey any license under the copyrights, patent rights or trademarks claimed and owned by Fujitsu.
Fujitsu reserves the right to change products or specifications without notice.
No part of this publication may be copied or reproduced in any form or by any means, or
transferred to any third party without prior written consent of Fujitsu.
7
MB508
FUJITSU LIMITED
For further information please contact:
Japan
FUJITSU LIMITED
International Marketing Div.
Furukawa Sogo Bldg., 6-1, Marunouchi 2-chome
Chiyoda-ku, Tokyo 100, Japan
Tel: (03) 3216-3211
Telex: 781-2224361
FAX: (03) 3215-0662
North and South America
FUJITSU MICROELECTRONICS, INC.
Semiconductor Division
3545 North First Street
San Jose, CA 95134-1804, USA
Tel: 408-922-9000
FAX: 408-432-9044
Europe
FUJITSU MIKROELEKTRONIK GmbH
Am Siebenstein 6-10,
6072 Dreieich-Buchschlag,
Germany
Tel: (06103) 690-0
Telex: 411963
FAX: (06103) 690-122
Asia
FUJITSU MICROELECTRONICS ASIA PTE LIMITED
51 Bras Basah Road,
Plaza By The Park,
#06-04 to #06-07
Singapore 0719
Tel: 336-1600
Telex: 55573
FAX: 336-1609
FUJITSU LIMITED 1990
8
Printed in Japan PV0002–904A3