Datenblatt-pdf.com


LC72122V Schematic ( PDF Datasheet ) - Sanyo Semicon Device

Teilenummer LC72122V
Beschreibung PLL Frequency Synthesizer for Portable Equipment Electronic Tuning
Hersteller Sanyo Semicon Device
Logo Sanyo Semicon Device Logo 




Gesamt 22 Seiten
LC72122V Datasheet, Funktion
Ordering number : ENN6113A
CMOS IC
LC72122V
PLL Frequency Synthesizer
for Portable Equipment Electronic Tuning
Overview
The LC72122V is a low-voltage (1.8 to 3.6 V) PLL
frequency synthesizer IC that allows portable TV
(VHF)/FM/AM tuners to be constructed easily.
Features
• High-speed programmable frequency divider
— FMIN: 10 to 250 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 nine frequencies (crystal
oscillator: 75 kHz)
1, 2.5, 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
— Sub-charge pump for fast frequency locking
• Built-in MOS transistor for forming an active low-pass
filter
• I/O ports
— Dedicated output ports: 3
— 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: 1.8 to 3.6 V
— Operating temperature: –20 to +70°C
• Package
—SSOP20
Package Dimensions
unit: mm
3179A-SSOP20
[LC72122V]
20 11
1 10
6.7
0.15
0.22 0.65 0.43
SANYO: SSOP20
• 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.
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
D0199TH (OT) /O3099TH (OT) /D2598RM (OT) No. 6113-1/22






LC72122V Datasheet, Funktion
Continued from preceding page.
Symbol
Pin No.
Type
LC72122V
Functions
Circuit configuration
BO1
BO2
BO3
• Dedicated outputs
5 • The output states are determined by the BO1 to BO3
6 Output ports
bits in the serial data.
Data: 0 = open, 1= low
7 • 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
8
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.
PD
AIN
AOUT
Vssa
IFIN
• PLL charge pump output
When the frequency generated by dividing the local
15
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.
• The n-channel MOS transistor used for the PLL active
16 LPF amplifier low-pass filter.
17 transistor
• The AIN pin is connected internally to a fast locking sub-
18 connections
charge pump circuit (PDS).
• Vssa is special-purpose ground pin.
10 IF counter
• Accepts an input in the frequency range 0.4 to 12 MHz.
• The input signal is directly transmitted to the IF counter.
• The result is output starting the MSB of the IF counter
using the DO pin.
• Four measurement periods are supported: 8, 16, 32, and
64 ms.
No. 6113-6/22

6 Page









LC72122V pdf, datenblatt
LC72122V
Serial Data Input (IN1/IN2) tSU, tHD, tEL, tES, tEH, 0.75 µs, tLC < 0.75 µs
1. CL: Normal high
2. CL: Normal low
Serial Data Output (OUT) tSU, tHD, tEL, tES, tEH, 0.75 µs, tDC, tDH < 0.35 µs
1. CL: Normal high
2. CL: Normal low
Note: Since the DO pin is an n-channel open drain circuit, the times for the data to change (tDC and tDH) will differ depending on the value of the pull-up
resistor, printed circuit board capacitance.
No. 6113-12/22

12 Page





SeitenGesamt 22 Seiten
PDF Download[ LC72122V Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
LC72122VPLL Frequency Synthesizer for Portable Equipment Electronic TuningSanyo Semicon Device
Sanyo Semicon Device

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche