Ordering number : ENN5743B
CMOS IC
LC72137, 72137M
PLL Frequency Synthesizer
for Electronic Tuning
Overview
The LC72137 and LC72137M are high input sensitivity
(FMIN: 10 mVrms at 130 MHz) PLL frequency
synthesizers for 3 V systems. They allow high-
performance AM/FM tuners to be implemented easily.
• Operating ranges
— Supply voltage: 2.5 to 3.6 V
— Operating temperature: –20 to +70°C
• Packages
—DIP22S/MFP20
Features
• High-speed programmable frequency divider
— FMIN: 10 to 160 MHz ..Pulse swallower
(divide-by-two prescaler built in)
— AMIN: 2 to 40 MHz ......Pulse swallower
0.5 to 10 MHz ...Direct division
• IF counter
— IFIN: 0.4 to 12 MHz ......For use as an AM/FM IF
counter
• Reference frequency
— Selectable from one of eight frequencies (crystal
oscillator: 75 kHz)
1, 3, 5, 3.125, 6.25, 12.5, 15, and 25 kHz
• Phase comparator
— Supports dead zone control
— Built-in unlock detection circuit
— Built-in deadlock clear circuit
• Built-in MOS transistor for forming an active low-pass
filter
• I/O ports
— Dedicated output ports: 4
— I/O ports: 2
— Supports clock time base output
• Serial Data I/O
— Supports CCB format communication with the
system controller.
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.
Package Dimensions
unit: mm
3059-DIP22S
[LC72137]
22
12
7.62
6.4
1
21.2
11
0.51min 3.25
0.95
0.48
1.78
1.7
3.3
3.9max
SANYO: DIP22S
unit: mm
3036B-MFP20
[LC72137M]
20
11
6.35
1.8 max
12.6
1.5
0.15
0.35
1.27
0.59
0.1
SANYO: MFP20
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
91099TH (OT)/N3098HA (OT)/70398RM (OT) No. 5743-1/22
0.625
1
10
5.4
7.6
0.25
LC72137, 72137M
Specifications
Absolute Maximum Ratings
at Ta = 25°C, V
SS
= 0 V
Parameter
Maximum supply voltage
Symbol
V
DD
max
V
IN
1 max
Maximum input voltage
V
IN
2 max
V
IN
3 max
V
O
1 max
Maximum output voltage
V
O
2 max
V
O
3 max
Maximum output current
Allowable power dissipation
Operating temperature
Storage temperature
I
O
max
Pd max
Topr
Tstg
V
DD
CE, CL, DI, AIN
XIN, FMIN, AMIN, IFIN
IO1, IO2
DO
XOUT, PD
BO1 to BO4, IO1, IO2, AOUT
BO1 to BO4, IO1, IO2, DO, AOUT
Ta
≤
70°C: DIP22S
Ta
≤
70°C: MFP20
Conditions
Ratings
–0.3 to +7.0
–0.3 to +7.0
–0.3 to V
DD
+ 0.3
–0.3 to +15
–0.3 to +7.0
–0.3 to V
DD
+ 0.3
–0.3 to +15
0 to 6.0
350
180
–20 to +70
–40 to +125
Unit
V
V
V
V
V
V
V
mA
mW
mW
°C
°C
Allowable Operating Ranges
at Ta = –20 to +70°C, V
SS
= 0 V
Parameter
Supply voltage
Input high-level voltage
Input low-level voltage
Output voltage
Symbol
V
DD
V
IH
1
V
IH
2
V
IL
V
O
1
V
O
2
f
IN
1
f
IN
2
Input frequency
f
IN
3
f
IN
4
f
IN
5
V
IN
1
V
IN
2-1
V
IN
2-2
Input amplitude
V
IN
2-3
V
IN
3
V
IN
4
V
IN
5-1
V
IN
5-2
Guaranteed crystal
oscillator frequency
Xtal
V
DD
CE, CL, DI
IO1, IO2
CE, CL, DI, IO1, IO2
DO
BO1 to BO4, IO1, IO2, AOUT
XIN: V
IN
1
FMIN: V
IN
2
AMIN: V
IN
3, SNS = 1
AMIN: V
IN
4, SNS = 0
IFIN: V
IN
5
XIN: f
IN
1
FMIN: f = 10 to 40 MHz
FMIN: f = 40 to 130 MHz
FMIN: f = 130 to 160 MHz
AMIN: f
IN
3, SNS = 1
AMIN: f
IN
4, SNS = 0
IFIN: f
IN
5, IFS = 1
IFIN: f
IN
6, IFS = 0
XIN, XOUT
*
10
2
0.5
0.4
200
20
10
40
40
40
40
70
75
Conditions
min
2.5
0.7 V
DD
0.7 V
DD
0
0
0
75
160
40
10
12
800
800
800
800
800
800
800
800
Ratings
typ
max
3.6
6.5
13
0.3 V
DD
6.5
13
V
V
V
V
V
V
kHz
MHz
MHz
MHz
MHz
mVrms
mVrms
mVrms
mVrms
mVrms
mVrms
mVrms
mVrms
kHz
Unit
*
Note : Recommended crystal oscillator CI value : CI
≤
35 kΩ (for a 75kHz crystal )
The circuit constants for the crystal oscillator circuit depend on the crystal used, the printed sircuit board pattem, and other items. Therefore we
recommend consulting with the manfacturer of the crystal for evaluation and reliability.
The extremely high input impedance of the XIN pins means that applications must take the possibility of leakage into account.
No. 5743-2/22
LC72137, 72137M
Electrical Characteristics
within the allowable operating ranges
Parameter
Symbol
Rf1
Internal feedback resistors
Rf2
Rf3
Rf4
Internal pull-down resistors
Internal output resistor
Hysteresis
Output high-level voltage
Rpd1
Rpd2
Rd
V
HIS
V
OH
1
V
OL
1
Output low-level voltage
V
OL
2
V
OL
3
V
OL
4
I
IH
1
I
IH
2
Input high-level voltage
I
IH
3
I
IH
4
I
IH
5
I
IH
6
I
IL
1
I
IL
2
Input low-level current
I
IL
3
I
IL
4
I
IL
5
I
IL
6
Output off leakage current
High-level three-state off
leakage current
Low-level three-state off
leakage current
Input capacitance
I
OFF
1
I
OFF
2
I
OFFH
I
OFFL
C
IN
I
DD
1
Current drain
I
DD
2
I
DD
3
XIN
FMIN
AMIN
IFIN
FMIN
AMIN
XOUT
CE, CL, DI, IO1, IO2
PD: I
O
= –1 mA
PD: I
O
= 1 mA
BO1 to BO4, IO1, IO2; I
O
= 1 mA
BO1 to BO4, IO1, IO2; I
O
= 5 mA
DO: I
O
= 1 mA
AOUT, I
O
= 1 mA, A
IN
= 1.3 V
CE, CL, DI: V
I
= 6.5 V
IO1, IO2: V
I
= 13 V
XIN: V
I
= V
DD
FMIN, AMIN: V
I
= V
DD
IFIN: V
I
= V
DD
AIN: V
I
= 6.5 V
CE, CL, DI: V
I
= 0 V
IO1, IO2: V
I
= 0 V
XIN: V
I
= 0 V
FMIN, AMIN: V
I
= 0 V
IFIN: V
I
= 0 V
AIN: V
I
= 0 V
BO1 to BO4, AOUT, IO1, IO2: V
O
= 13 V
DO: V
O
= 6.5 V
PD: V
O
= V
DD
PD: V
O
= 0 V
FMIN
V
DD
: Xtal = 75 kHz, f
IN
2 = 130 MHz, V
IN
2 = 10 mVrms
V
DD
: PLL block stopped (PLL inhibit),
Xtal oscillator operating (Xtal = 75 kHz)
V
DD
: PLL block stopped, Xtal oscillator stopped
0.01
0.01
6
2.5
20
10
6
0.16
2.5
5.0
0.16
2.5
5.0
V
DD
– 1.0
1.0
0.25
1.25
0.25
0.5
5.0
5.0
0.9
15
30
200
5.0
5.0
0.9
15
30
200
5.0
5.0
200
200
Conditions
min
Ratings
typ
8.0
500
500
250
200
200
250
0.1 V
DD
max
MΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
V
V
V
V
V
V
V
µA
µA
µA
µA
µA
nA
µA
µA
µA
µA
µA
nA
µA
µA
nA
nA
pF
mA
µA
µA
Unit
No. 5743-3/22
LC72137, 72137M
Pin Assignments
Block Diagram
No. 5743-4/22
LC72137, 72137M
Pin Descriptions
Symbol
Pin No.
(MFP pin numbers
are in parentheses.)
Type
Functions
Circuit configuration
XIN
XOUT
20 (19)
21 (20)
Xtal
• Crystal oscillator connections (75 kHz)
FMIN
13 (12)
Local oscillator
signal input
• FMIN is selected when the serial data input DVS bit is
set to 1.
• The input frequency range is from 10 to 160 MHz.
• The input signal passes through the internal divide-by-
two prescaler and is input to the swallow counter.
• The divisor can be in the range 272 to 65535. However,
since the signal has passed through the divide-by-two
prescaler, the actual divisor is twice the set value.
AMIN
12 (11)
Local oscillator
signal input
• AMIN is selected when the serial data input DVS bit is
set to 0.
• When the serial data input SNS bit is set to 1:
— The input frequency range is 2 to 40 MHz.
— The signal is directly input to the swallow counter.
— The divisor can be in the range 272 to 65535, and
the divisor used will be the value set.
• When the serial data input SNS bit is set to 0:
— The input frequency range is 0.5 to 10 MHz.
— The signal is directly input to a 12-bit programmable
divider.
— The divisor can be in the range 4 to 4095, and the
divisor used will be the value set.
CE
2 (1)
Chip enable
• Set this pin high when inputting (DI) or outputting (DO)
serial data.
DI
3 (2)
Input data
• Inputs serial data transferred from the controller to the
LC72137.
CL
4 (3)
Clock
• Used as the synchronization clock when inputting (DI) or
outputting (DO) serial data.
DO
5 (4)
Output data
• Outputs serial data transferred from the LC72137 to the
controller. The data output is determined by the DOC0 to
DOC2 bits in the serial data.
V
DD
15 (14)
Power supply
• The LC72137 power supply pin. (V
DD
= 2.5 to 3.6 V)
• The power on reset circuit operates when power is first
applied.
• The LC72137 ground
V
SS
16 (15)
Ground
Continued on next page.
No. 5743-5/22
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