LOW POWER SERIAL INPUT PLL
SYNTHESIZER WITH 600MHz PRESCALER
The Fujitsu MB1505, utilizing BI-CMOS technology , is a single chip serial input PLL
synthesizer with pulse-swallow function. The MB1505 contains a 600MHz two
modulus prescaler that can select of either 32/33 or 64/65 divide ratio, control signal
generator , 16-bit shift register, 15-bit latch, programmable reference divider (binary
14-bit programmable reference counter), 1-bit switch counter, phase comparator
with phase conversion function, charge pump, crystal oscillator , 19-bit shift register ,
18-bit latch, programmable divider (binary 7-bit swallow counter and binary 11-bit
programmable counter) and analog switch to speed up lock up time.
It operates supply voltage of 5V typ. and achieves very low supply current of 6mA typ.
realized through the use of Fujitsu Advanced Process Technology.
FEATURES
•High operating frequency: fIN MAX=600MHz (PIN MIN= –4dBm)
•Pulse swallow function: 32/33 or 64/65
•Low supply current: ICC 6mA typ.
•Serial input 18-bit programmable divider consisting of:
— Binary 7-bit swallow counter: 0 to 63
— Binary 11-bit programmable counter: 16 to 2047
•Serial input 15-bit programmable reference divider consisting of:
— Binary 14-bit programmable reference counter: 8 to 16383
— 1-bit switch counter (SW) sets divide ratio of prescaler
•On-chip analog switch achieves fast lock up time
•2 types of phase detector output
— On-chip charge pump (Bipolar type)
— Output for external charge pump
•Wide operating temperature: –40C to +85C
•16-pin Plastic DIP Package (Suffix: —P)
16-pin Plastic Flat Package (Suffix: —PF)
ABSOLUTE MAXIMUM RATINGS (See NOTE)
RatIng Symbol Value Unit
Power Supply Voltage
VCC –0.5 to +7.0 V
Power Supply Voltage VPVCC to 10.0 V
Output Voltage VOUT –0.5 to VCC +0.5 V
Open-drain Voltage VOOP –0.5 to 0.8 V
Output Current IOUT ± 10 mA
Storage Temperature TSTG –55 to +125 C
NOTE: Permanent device damage may occur if the above Absolute Maximum RatIngs are exceed-
ed.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.
DATA SHEET
Sept. 1995
Edition 1.0a
MB1505
SERIAL INPUT PLL FREQUENCY SYNTHESIZER
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.
Pin Assignment
Plastic Package
DIP–16P–M04
Plastic Package
DIP–16P–M02
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OSCIN
OSCOUT
VP
VCC
DO
GND
LD
fIN
fOUT
BiSW
FC
LE
Data
Clock
∅R
∅P
MB1505
2
MB1505 BLOCK DIAGRAM
1
2
3
4
5
6
7
8
9
ANALOG
SWITCH
PHASE
COMPARATOR
MONITOR
FREQUENCY
CHANGING
CIRCUIT
CHARGE
PUMP
CONTROL
1-BIT
LATCH
DOLE
∅R
∅P
fOUT
BISW
FC
LE
Data
Clock
16-BIT SHIFT REGISTER
16-BIT SHIFT REGISTER
15-BIT LATCH
15-BIT LATCH
PROGRAMMABLE REFERENCE
DIVIDER
S
W
BINARY 14-BIT
REFERENCE COUNTER
19-BIT SHIFT REGISTER
19-BIT SHIFT REGISTER
18-BIT LATCH
7-BIT LATCH 11-BIT LATCH
PROGRAMMABLE DIVIDER
PRESCALER
CONTROL CIRCUIT
fp
BINARY 7–BIT
SWALLOW
COUNTER
BINARY 11-BIT
PROGRAMMABLE
COUNTER
fr
CRYSTAL
OSCILLATOR 15
16
13
14
12
fIN
LD
OSCIN
OSCOUT
VP
VCC
DO
GND 11
10
MB1505
3
PIN DESCRIPTION
Pin
No. Pin
Name I/O Description
1
2OSCIN
OSCOUT I
OOscillator input.
Oscillator output.
A crystal is placed between OSCIN and OSCOUT.
3 VP—Power supply input for charge pump and analog switch.
4 VCC —Power supply voltage input.
5 DOOCharge pump output.
The characteristics of charge pump is reversed depending upon FC input.
6 GND — Ground
7 LD O Phase comparator output.
Normally this pin outputs high level. While the phase difference of fr, and fp exists, this
pin outputs low level.
8 fIN lPrescaler input.
The connection with an external VCO should be AC connection.
9 Clock I Clock input for 19-bit shift register and 16-bit shift register.
On rising edge of the clock shifts one bit of data into the shift registers.
10 Data l Binary serial data input.
The last bit of the data is a control bit which specified destination of shift registers.
When this bit is high level and LE is high level, the data stored in shift register is transferred to 15-bit latch.
When this bit is low level and LE is high level, the data is transferred to 18-bit latch.
11 LE I Load enable input (with internal pull up resistor).
When LE is high or open, the data stored in shift register is transferred into latch depending upon the control
bit. At the time, internal charge pump output to be connected to BISW pin because internal analog switch
becomes ON state.
12 FC l Phase select input of phase comparator (with internal pull up resistor).
When FC is low level, the characteristics of charge pump, phase comparator is reversed.
FC input signal is also used to control fOUT pin (test pin) output level for f r or fp.
13 BISW O Analog switch output.
Usually BISW pin is set high-impedance state. When internal analog switch is ON (LE pin is high level), this
pin outputs internal charge pump state.
14 fOUT OMonitor pin of phase comparator input.
fOUT pin outputs either programmable reference divider output (fr) or programmable divider output (fp)
depending upon FC pin input level.
15
16 ∅P
∅RO
OOutputs for external charge pump.
The characteristics are reversed according to FC input.
∅P pin is N-channel open drain output.
MB1505
4
FUNCTIONAL DESCRIPTIONS
SERIAL DATA INPUT
Serial data input is achieved by three inputs, such as Data pin, Clock pin and LE pin. Serial data input controls 15-bit programmable
reference divider and 18-bit programmable divider, respectively.
Binary serial data is input to Data pin.
On rising edge of clock shifts one bit of serial data into the internal shift registers and when load enable pin is high level or open, stored
data is transferred into latch depending upon the control bit.
Control data “H” data is transferred into 15-bit latch.
Control data “L” data is transferred into 18-bit latch.
PROGRAMMABLE REFERENCE DIVIDER
Programmable reference divider consists of 16-bit shift register, 15-bit latch and 14-bit reference counter. Serial 16-bit data format is
shown below.
Control bit MSB
Divide ration of prescaler setting bit
LSB
C S
1
S
2
S
3
S
4
S
5
S
6
S
7
S
8
S
9
S
10
S
11
S
12
S
13
S
14
S
W
Divide ratio of programmable reference counter setting bit
14-BIT PROGRAMMABLE REFERENCE COUNTER DIVIDE RATIO
Divide
Ratio
R
S
14
S
13
S
12
S
11
S
10
S
9
S
8
S
7
S
6
S
5
S
4
S
3
S
2
S
1
8 0 0 0 0 0 0 0 0 0 0 1 0 0 0
9 0 0 0 0 0 0 0 0 0 0 1 0 0 1
• • • • • • • • • • • • • • •
16383 1 1 1 1 1 1 1 1 1 1 1 1 1 1
NOTES: Divide ratio less than 8 is prohibited.
Divide ratio: 8 to 16383
SW: This bit selects divide ratio of prescaler.
SW=H : 32/33
SW=L :64/65
S1 to S14: These bits select divide ratio of programmable reference divider.
C: Control bit (sets as high level).
Data is input from MSB side.
PROGRAMMABLE DIVIDER
Programmable divider consists of 19-bit shift register, 18-bit latch, 7-bit swallow counter and 11-bit programmable counter.
Serial 19-bit data format is shown on following page.
MB1505
5
Control bit MSBLSB
CS
1
S
2
S
3
S
4
S
5
S
6
S
7
S
8
S
9
S
1
0
S
1
1
S
1
2
S
1
3
S
1
4
S
1
5
S
1
6
S
1
7
S
1
8
Divide ratio of swallow
counter of setting bit Divide ratio of programmable
counter of setting bit
7-BIT SWALLOW COUNTER DIVIDE RATIO
Divide
Ratio
A
S
7
S
6
S
5
S
4
S
3
S
2
S
1
0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 1
• • • • • • • •
127 1 1 1 1 1 1 1
NOTE: Divide ratio: 0 to 63
S7 should be set to zero
11-BIT PROGRAMMABLE COUNTER DIVIDE RATIO
Divide
Ratio
N
S
1
8
S
1
7
S
1
6
S
1
5
S
1
4
S
1
3
S
1
2
S
1
1
S
1
0
S
9
S
8
16 0 0 0 0 0 0 1 0 0 0 1
17 0 0 0 0 0 0 1 0 0 0 1
• • • • • • • • • • • •
2047 1 1 1 1 1 1 1 1 1 1 1
NOTES: Divide ratio less than 16 is prohibited.
Divide ratio: 16 to 2047
S1 to S7: Swallow counter divide ratio setting bit. (0 to 63)
S8 to S18: Programmable counter divide ratio setting bit. (16 to 2047)
C: Control bit (sets as low level).
Data is input from MSB side.
PULSE SWALLOW FUNCTION
fvco = [(PxN)+A] x fosc ÷ R
fvco: Output frequency of external voltage controlled oscillator (VCO)
N: Preset divide ratio of binary 11-bit programmable counter (16 to 2047)
A: Preset divide ratio of binary 7-bit swallow counter (0 ≤A ≤63, A<N)
fosc: Output frequency of the external reference frequency oscillator
R: Preset divide ratio of binary 14-bit programmable reference counter (8 to 16383)
P: Preset modulus of external dual modulus prescaler (32 or 64)
MB1505
6
Serial Data Input Timing
Data
Clock
S18=MSB
*(SW) (S14) (S8) (S7) (S1) (C: Control bit)
(C: Control bit)S17 S10 S9 S1=LSB
LE
t1 – t5 ≥ 1µs
t1t2t3t4t5
NOTES: Parenthesis data is used for setting divide ratio of programmable reference divider.
On rising edge of clock shifts one bit of data in the shift register.
PHASE CHARACTERISTICS
FC pin is provided to change phase characteristics of phase comparator. Characteristics of internal charge pump output level (Do),
phase comparator output level (∅R, ∅P) are reversed depending upon FC pin input level. Also, monitor pin (f OUT) output level of phase
comparator is controlled by FC pin input level. The relation between outputs (DO, ∅R, ∅P) and FC input level are shown below.
FC=H or open FC=L
DO∅R∅PfOU
TDO∅R∅PfOU
T
fr > fpH L L (fr) L H Z (fp)
fr < fpL H Z (fr) H L L (fp)
fr = fpZ L Z (fr) Z L Z (fp)
Note: Z = (High impedance)
VCO CHARACTERISTICS
Depending upon VCO characteristics,
FC pin should be set accordingly:
— When VCO characteristics are like 1,
FC should be set High or open circuit;
— When VCO characteristics are like 2,
FC should be set Low.
2
1
VCO INPUT VOLTAGE
VCO OUTPUT FREQUENCY
MB1505
7
fp
fr
LD
Do H
L
Z
fr > fpfr = fpfr < fpfr < fpfr < fp
NOTES: Phase difference detection range: —2π to +2 π
Spike appearance depends on charge pump characteristics. Also, the spike is output in order to diminish dead band.
When fr > fp or fr < fp, spike might not appear depending upon charge pump characteristics.
ANALOG SWITCH
ON/OFF of analog switch is controlled by LE input signal. When the analog switch is ON, internal charge pump output (DO) to be
connected to BlSW pin. When the analog switch is OFF, BlSW pin is set to high-impedance state.
LE=H (Changing the divide ratio of internal prescaler) : Analog switch=ON
LE=L (Normal operating mode): Analog switch=OFF
LPF time constant is decreased in order to insert a analog switch between LPF1 and LPF2 when channel of PLL is changing.
Thus, lock up time is decreased, that is, fast lock up time is achieved.
CHARGE PUMP LPF-1 LPF-2 VCO
ANALOG SW
Do
BISW
(CONTROL SIGNAL)
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Value
Unit
Parameter Symbol Min Typ Max Unit
Power Supply Voltage
VCC 4.5 5.0 5.5 V
Power Supply Voltage VPVCC VP8.0 V
Input Voltage VIGND VCC V
Operating Temperature T A–40 85 C
MB1505
8
ELECTRICAL CHARACTERISTICS
Symbol
Condition
Value
Unit
Parameter Symbol Condition Min Typ Max Unit
Power Supply Current ICC Note 1 6.0 mA
Operating Frequency
fin fin Note2 10 600 MHz
Operating Frequency OSCIN fOSC 12 20 MHz
Input Sensitivity
fin Pfin –4 6 dBm
Input Sensitivity OSCIN VOSC 0.5 VPP
High–level Input Voltage Except fin VIN VCCx0.7 V
Low-level Input Voltage
Except
fi
n
and OSCIN VIL VCCx0.3 V
High-level Input Current Data IIH 1.0 A
Low-level Input Current
Data
Clock IIL –1.0 A
Input Current
OSCIN IOSC ±50 A
Input Current LE, FC ILE –60 A
High-level Output Current Except DO
and OSC-
VOH VCC = 5 V 4.4 V
Low-level Output Current
pO
and OSC-
OUT VOL 0.4 V
N-channel Open Drain Cutoff
Current DO, ∅P IOFF VP = VCC to 8V
VOOP= GND to 8V 1.1 µA
Output Current
Except DO
and OSC-
IOH –1.0 mA
Output Current
pO
and OSC-
OUT IOL 1.0 mA
Analog Switch On Resistor RON 25
NOTE: 1: f in = 600MHz, OSClN=12MHz, Vcc=5V. Inputs are grounded and outputs are open.
2: AC coupling. Minimum operating frequency is measured when a capacitor 1000pF is connected.
MB1505
9
TEST CIRCUIT
8765432 1
MB1505
9 10 11 12 13 14 15 16
1000 pF
50 Ω
0.1 µF
Oscilloscope
VCC = 5V
P · G
Crystal VP = 6V
MB1505
10
TYPICAL APPLICATION EXAMPLE
LPF VCO
Charge Pump
Selection
(Internal or
external)
Vp, Vpx : 8V max
C1, C2: Depends on crystal oscillator
LE, FC : With internal pull up resistor
∅P : Open drain output
0.1µF
0.01µF
X’tal 1000pF
33kΩ
10kΩ
100kΩ
LOCK DET
VCC (5V)
6V 5V
C1C2
OSCIN OSCOUT VPVCC DOfin
LDGND
FROM
CONTROLLER
∅R∅PFCf
p
f
r
LE Data Clock 47kΩ47kΩ
12kΩ
12kΩ
10kΩ
12345678
16 15 14 13 12 11 10 9
OUTPUT
VPX(6V)
10kΩ
MB1505
MB1505
11
PACKAGE DIMENSIONS
16–Lead Plastic Dual In–Line Package
(Case No.: DIP–16P–M04)
Dimensions in
inches (millimeters)
1991 FUJITSU LIMITED D16033S-2C
.770+.008
–.012 (19.55 )
+0.20
–0.30
.039+.012
–0
(0.99 )
+0.30
–0
.244±.010
(6.20±0.25)
INDEX-1
.100(2.54)
TYP
.050(1.27)
MAX
.020(0.51)MIN
.172(4.36)MAX
.118(3.00)MIN
.300(7.62)
TYP
15°MAX
.060+.012
–0
(1.52 )
+0.30
–0
INDEX-2
.010±.002
(0.25±0.05)
.018±.003
(0.46±0.08)
MB1505
12
PACKAGE DIMENSIONS
16–Lead Plastic Flat Package
(Case No.: FPT–16P–M02)
Dimensions in
inches (millimeters)
“A”
1988 FUJITSU LIMITED F16005S-4C
.400+.010
–.008 (10.15 )
+0.25
–0.20
.209±.012
(5.30±0.30)
INDEX
.004(0.10)
.050(1.27)
TYP .018±.004
(0.45±0.10) ∅.005(0.13)
.307±.016
(7.80±0.40)
.002(0.05)MIN
(STAND OFF HEIGHT)
.089(2.25)MAX
(MOUNTING HEIGHT)
.006+.002
–.001 (0.15 )
+0.05
–0.02
.020±.008
(0.50±0.20)
.027(0.68)
MAX
.007(0.18)
MAX
.020(0.50)
.08(0.20)
Details of “A” part
M
.350(8.89) REF
.268+.016
–.008 (6.80 )
+0.40
–0.20
MB1505
13
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.
MB1505
14
FUJITSU LIMITED
For further information, please contact:
Japan
FUJITSU LIMITED
Semiconductor Marketing
Furukawa Sogo Bldg.
6-1, Marunouchi 2-chome
Chiyoda-ku, Tokyo 100
Japan
Tel: (03) 3216-3211
Telex: 781-2224361
FAX: (03) 3216-9771
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
Arabella Centre 9.OG
Lyoner Strasse 44-48
D-6000 Frankfurt 71
F.R. Germany
Tel: (069) 66320
Telex: 411963
FAX: (069) 6632122
Asia
FUJITSU MICROELECTRONICS ASIA PTE LIMITED
51 Bras Basah Road
Plaza by the Park
#06-04/07
Singapore 0718
Tel: 336-1600
Telex: 55373
FAX: 336-1609
1990 FUJITSU LIMITED
