LC72136N Sanyo Semiconductor Corporation, LC72136N Datasheet

no-image

LC72136N

Manufacturer Part Number
LC72136N
Description
PLL frequency synthesizer for electronic tuning
Manufacturer
Sanyo Semiconductor Corporation
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LC72136N
Quantity:
131
Part Number:
LC72136N-D-E
Manufacturer:
SANYO/三洋
Quantity:
20 000
Ordering number : EN5608
Overview
The LC72136N and LC72136NM 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
• IF counter
• Reference frequency
• Phase comparator
• Built-in MOS transistor for forming an active low-pass
• I/O ports
• Serial Data I/O
• Operating ranges
• Packages
— FMIN: 10 to 160 MHz.....Pulse swallower
— AMIN: 2 to 40 MHz.........Pulse swallower
IFIN: 0.4 to 12 MHz................For use as an AM/FM IF
— Selectable from one of eight frequencies (crystal
— Supports dead zone control
— Built-in unlock detection circuit
— Built-in deadlock clear circuit
— Dedicated output ports: 6
— I/O ports: 2
— Supports clock time base output
— Supports CCB format communication with the
— Supply voltage: 4.5 to 5.5 V
— Operating temperature: –20 to +70°C
filter
—DIP22S/MFP24S
• 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 Electric Co.,Ltd. Semiconductor Bussiness Headquarters
oscillator: 75 kHz)
1, 3, 5, 3.125, 6.25, 12.5, 15, and 25 kHz
system controller.
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
0.5 to 10 MHz......Direct division
(divide-by-two prescaler built in)
counter
Package Dimensions
unit: mm
3059-DIP22S
unit: mm
3112-MFP24S
PLL Frequency Synthesizer
LC72136N, 72136NM
for Electronic Tuning
[LC72136NM]
[LC72136N]
N3096HA (OT) No. 5608-1/23
SANYO: MFP24S
SANYO: DIP22S
CMOS LSI

Related parts for LC72136N

LC72136N Summary of contents

Page 1

... Ordering number : EN5608 Overview The LC72136N and LC72136NM 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 160 MHz.....Pulse swallower (divide-by-two prescaler built in) — ...

Page 2

... Pin Assignments LC72136N, 72136NM No. 5608-2/23 ...

Page 3

... BO1 to BO5, BOF, IO1, IO2, AOUT max BO1 max AOUT max BO2 to BO5, BOF, IO1, IO2 O Ta ≤ 70°C: LC72136N (DIP22S) Pd max Ta ≤ 70°C: LC72136NM (MFP24S) Topr Tstg Ratings Unit –0.3 to +7.0 V –0.3 to +7.0 V –0 0 –0.3 to +15 V –0.3 to +7.0 V – ...

Page 4

... The extremely high input impedance of the XIN pins means that applications must take the possibility of leakage into account. Sample Oscillator Circuits 1. Seiko-Epson C-2-75kHz ( pF Kyocera Corporation KF-38R5-09P0300 (C LC72136N, 72136NM = Conditions V DD CE, CL, DI ...

Page 5

... High-level tree-state off I OFFH leakage current Low-level tree-state off I OFFL leakage current Input capacitance Current drain LC72136N, 72136NM = Conditions XIN FMIN AMIN IFIN FMIN AMIN XOUT CE, CL, DI, IO1, IO2 PD – PD BO1 0 ...

Page 6

... Used as the synchronization clock when inputting (DI) or outputting (DO) serial data. • Inputs serial data transferred from the controller to the LC72136N. • Outputs serial data transferred from the LC72136N to the controller. The data output is determined by the DOC0 to DOC2 bits in the serial data. • The LC72136N power supply pin ...

Page 7

... AOUT 20 (21) connections 12 (13) IFIN IF counter LC72136N, 72136NM Functions • Dedicated outputs • The output states are determined by the BO1 to BO5 bits in the serial data. Data 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.) • ...

Page 8

... Serial Data I/O Procedures The LC72136N inputs and outputs data using the Sanyo CCB (computer control bus) audio LSI serial bus format. This LSI adopts an 8-bit address format CCB. I/O mode B0 1 IN1 (82 IN2 (92 OUT (A2) 0 LC72136N, 72136NM Address ...

Page 9

... DI Control Data (serial data input) Structure 1. IN1 Mode 2. IN2 Mode LC72136N, 72136NM No. 5608-9/23 ...

Page 10

... Data input mode output mode Output port data • BO1 to BO5, IO1, and IO2 output state data BO1 to BO5, IO1, IO2 Data open low (5) • “Data = 0: Open” is selected following a power-on reset. LC72136N, 72136NM Description SNS LSB Divisor setting ( 272 to 65535 ...

Page 11

... Data that forcibly controls the charge pump output DLC (10) Note: The LC72136N provides a technique for escaping from deadlock by setting Vtune to This function goes to the forced low state (DLC = 1) following a power on reset. The crystal oscillator circuit must be operating normally before this data is changed to return to the normal operating (DLC = 0) state ...

Page 12

... IF counter control data • This data should be set normal operation. Setting this data to 0 switches (11) IFS the LC72136N to a reduced input sensitivity mode in which the sensitivity is reduced mVrms. * See the “IF Counter Operation” item for details. LSI test data • ...

Page 13

... CL: Normal low Serial Data Output (OUT 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 (t resistor, printed circuit board capacitance. LC72136N, 72136NM , ≥ 0.75 µ < 0.75 µ ...

Page 14

... CE setup time hold time t EH Data latch change time Data output time t DH LC72136N, 72136NM CL Stopped at the Low Level CL Stopped at the High Level Pins Conditions DI CE, CL CE, CL CE, CL DO, CL These times depend on the pull-up resistance DO, CE and the printed circuit board capacitances ...

Page 15

... For a 9 kHz MW step size (DVS = 0, SNS = 0: AMIN low-speed side selected) • 1008 kHz (IF = +450 kHz) MW VCO = 1458 kHz PLL fref = 3 kHz ( 1): using a 3 kHz reference frequency 1458 kHz (MW VCO) 3 kHz (fref) = 486 LC72136N, 72136NM Set divisor Actual divisor: N 272 to 65535 Twice the set value ...

Page 16

... IF Counter Structure The LC72136N IF counter is a 20-bit binary counter. The result of the count can be read out serially, MSB first, from the DO pin. Measurement time GT1 GT0 Measurement period (GT) (ms frequency (Fc) measurement consists of determining how many pulses enter the IF counter in a specified measurement time (GT) ...

Page 17

... Before starting the IF count, the IF counter must be reset in advance by setting CTE in the serial data to 0. The IF count is started by changing the CTE bit in the serial data from The serial data is latched by the LC72136N when the CE pin is dropped from high to low. The IF signal must be supplied to the IFIN pin in the period between the point the CE pin goes low and the end of the wait time at the latest ...

Page 18

... For example, if fref is 1 kHz (and thus the period is 1 ms), after changing the divisor N, the system must wait at least 2 ms before checking for the unlocked state. LC72136N, 72136NM Figure 1 Unlock Detection Timing Figure 2 Circuit Structure No. 5608-18/23 ...

Page 19

... Unlock Detection Software 3. When Outputting Unlock Data Using Serial Data Output: Once the LC72136N detects an unlocked state, it does not reset the unlock data (UL) until the next data output (or data input) operation is performed. At the data output (locked), the unlock data remains set to the unlocked state since no data output has been performed since the value of N was changed ...

Page 20

... ON/ON state, the loop can easily become unstable. This point requires special care when designing application circuits. The following problems may occur in the ON/ON state. • Side band generation due to reference frequency leakage • Side band generation due to both the correction pulse envelope and low frequency leakage LC72136N, 72136NM Charge pump Dead zone ON/ON – –0 sec ON/ON – ...

Page 21

... IF-IC SD (station detect) signal and turn on the IF counter buffer only if the SD signal is present. Schemes in which auto-searches are performed with only IF counting are not recommended, since they can stop at points where there is no signal due to leakage output from the IF counter buffer. LC72136N, 72136NM Figure 4 Figure 5 ...

Page 22

... Also, an input pin state can be output unchanged through the DO pin and input to the controller. 5. Power Supply Pins A capacitor of at least 2000 pF must be inserted between the power supply V This capacitor must be placed as close as possible to the V Pin States Following a Power-On Reset LC72136N, 72136NM and V DD and V pins pins for noise exclusion ...

Page 23

... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of November, 1996. Specifications and information herein are subject to change without notice. LC72136N, 72136NM No. 5608-23/23 ...

Related keywords