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LC72137 데이터시트 PDF




Sanyo Semicon Device에서 제조한 전자 부품 LC72137은 전자 산업 및 응용 분야에서
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부품번호 LC72137 기능
기능 PLL Frequency Synthesizer for Electronic Tuning
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LC72137 데이터시트, 핀배열, 회로
Ordering number : EN5743
CMOS IC
LC72137, 72137M
PLL Frequency Synthesizer
for Electronic Tuning
Overview
The LC72137 and LC72137M are PLL frequency
synthesizers for use in radio/cassette players. They allow
high-performance AM/FM tuners to be implemented
easily.
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.
• Operating ranges
— Supply voltage: 2.5 to 3.6 V
— Operating temperature: –20 to +70°C
• Packages
—DIP22S/MFP20
Package Dimensions
unit: mm
3059-DIP22S
[LC72137]
unit: mm
3036B-MFP20
[LC72137M]
• 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.
SANYO: DIP22S
SANYO: MFP20
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
70398RM(OT) No. 5743-1/23




LC72137 pdf, 반도체, 판매, 대치품
Pin Assignments
LC72137, 72137M
No. 5743-4/23

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LC72137 전자부품, 판매, 대치품
Continued from preceding page.
Symbol
Pin No.
(MFP pin numbers
are in parentheses.)
Type
LC72137, 72137M
Functions
Circuit configuration
BO1
BO2
BO3
BO4
6 (5)
7 (6)
8 (7)
14 (13)
Output ports
• Dedicated outputs
• The output states are determined by the BO1 to BO5
bits in the serial data.
Data: 0 = open, 1= low
• A time base signal (8 Hz) can be output from the BO1
pin. (When the serial data TBC bit is set to 1.)
• I/O dual-use pins
• The direction (input or output) is determined by bits IOC1
and IOC2 in the serial data.
Data: 0 = input port, 1 = output port
• When specified for use as input ports:
The state of the input pin is transmitted to the controller
IO1
IO2
9 (8)
10 (9)
Input or output
ports
over the DO pin.
Input state: low = 0 data value
high = 1 data value
• When specified for use as output ports:
The output states are determined by the IO1 and IO2
bits in the serial data.
Data: 0 = open, 1 = low
• These pins function as input pins following a power on
reset.
• PLL charge pump output
When the frequency generated by dividing the local
PD
17 (16)
Charge pump
output
oscillator signal frequency by N is higher than the
reference frequency, a high level is output from the PD
pin. Similarly, when that frequency is lower, a low level is
output. The PD pin goes to the high-impedance state
when the frequencies match.
AIN
AOUT
18 (17)
19 (18)
LPF amplifier
transistor
connections
• The n-channel MOS transistor used for the PLL active
low-pass filter.
• Accepts an input in the frequency range 0.4 to 12 MHz.
• The input signal is directly transmitted to the IF counter.
IFIN
10 (9)
IF counter
• The result is output starting the MSB of the IF counter
using the DO pin.
• Four measurement periods are supported: 4, 8, 16, and
32 ms.
NC
1 (–)
22 (–)
NC Pin
• No connection
No. 5743-7/23

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