SANYO LC72136M, LC72136 Datasheet

Ordering number : EN5038

CMOS LSI

LC72136, 72136M

PLL Frequency Synthesizer

for Electronic Tuning

Overview

The LC72136 and LC72136M 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

0.5to 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: 6

—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: 4.5 to 5.5 V

—Operating temperature: –20 to +70°C

•Packages —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.

Package Dimensions

unit: mm

3059-DIP22S

[LC72136]

SANYO: DIP22S

unit: mm

3112-MFP24S

[LC72136M]

SANYO: MFP24S

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

O3195HA (OT) No. 5038-1/23

LC72136, 72136M

Pin Assignments

No. 5038-2/23

LC72136, 72136M

Block Diagram

Specifications

Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

VDD max

VDD

–0.3 to +7.0

V

VIN1 max

CE, CL, DI, AIN

–0.3 to +7.0

V

Maximum input voltage

VIN2 max

XIN, FMIN, AMIN, IFIN

–0.3 to VDD + 0.3

V

VIN3 max

–0.3 to +15

V

IO1,

IO2

VO1 max

DO

–0.3 to +7.0

V

Maximum output voltage

VO2 max

XOUT, PD

–0.3 to VDD + 0.3

V

VO3 max

BO1 to BO5,

BOF,

IO1,

IO2,

AOUT

–0.3 to +15

V

IO1 max

BO1

0 to 3.0

mA

Maximum output current

IO2 max

AOUT, DO

0 to 6.0

mA

IO3 max

BO2 to BO5, BOF,

IO1,

IO2

0 to 10.0

mA

Allowable power dissipation

Pd max

Ta ≤ 70°C: LC72136 (DIP22S)

350

mW

Ta ≤ 70°C: LC72136M (MFP24S)

200

mW

Operating temperature

Topr

–20 to +70

°C

Storage temperature

Tstg

–40 to +125

°C

No. 5038-3/23

LC72136, 72136M

Allowable Operating Ranges at Ta = –20 to +70°C, VSS = 0 V

Parameter

Symbol

Conditions

min

typ

max

Unit

Supply voltage

VDD

VDD

4.5

5.5

V

Input high-level voltage

VIH1

CE, CL, DI

0.7 VDD

6.5

V

VIH2

IO1, IO2

0.7 VDD

13

V

Input low-level voltage

VIL

CE, CL, DI,

IO1,

IO2

0

0.3 VDD

V

Output voltage

VO1

DO

0

6.5

V

VO2

BO1 to BO5, BOF, IO1, IO2, AOUT

0

13

V

fIN1

XIN: VIN1

75

kHz

fIN2

FMIN: VIN2

10

160

MHz

Input frequency

fIN3

AMIN: VIN3, SNS = 1

2

40

MHz

fIN4

AMIN: VIN4, SNS = 0

0.5

10

MHz

fIN5

IFIN: VIN5

0.4

12

MHz

VIN1

XIN: fIN1

400

1500

mVrms

VIN2-1

FMIN: f = 10 to 130 MHz

40

1500

mVrms

VIN2-2

FMIN: f = 130 to 160 MHz

70

1500

mVrms

Input amplitude

VIN3

AMIN: fIN3, SNS = 1

40

1500

mVrms

VIN4

AMIN: fIN4, SNS = 0

40

1500

mVrms

VIN5-1

IFIN: fIN5, IFS = 1

40

1500

mVrms

VIN5-2

IFIN: fIN6, IFS = 0

70

1500

mVrms

Guaranteed crystal

Xtal

XIN, XOUT*

75

kHz

oscillator frequency

Note: * Crystal oscillator recommended CI value CI ≤ 35 kΩ (for a 75 kHz crystal)

The circuit constants for the crystal oscillator circuit depend on the crystal used, the printed circuit board pattern, and other items. Therefore we recommend consulting with the manufacturer 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.

Sample Oscillator Circuits

1. Seiko-Epson C-2-75kHz (CL = 11 pF)

2. Kyocera Corporation KF-38R5-09P0300 (CL = 9 pF)

No. 5038-4/23

LC72136, 72136M

Electrical Characteristics at Ta = –20 to +70°C, VSS = 0 V

Parameter

Symbol

Conditions

min

typ

max

Unit

Rf1

XIN

8.0

MΩ

Internal feedback resistors

Rf2

FMIN

500

kΩ

Rf3

AMIN

500

kΩ

Rf4

IFIN

250

kΩ

Internal pull-down resistors

Rpd1

FMIN

200

kΩ

Rpd2

AMIN

200

kΩ

Internal output resistor

Rd

XOUT

250

kΩ

Hysteresis

VHIS

CE, CL, DI, IO1, IO2

0.1 VDD

V

Output high-level voltage

VOH1

PD: IO = –1 mA

VDD – 1.0

V

VOL1

PD: IO = 1 mA

1.0

V

VOL2

BO1: IO = 0.5 mA

0.5

V

BO1: IO = 1 mA

1.0

V

VOL3

DO: IO = 1 mA

0.2

V

Output low-level voltage

DO: IO = 5 mA

1.0

V

BO2 to BO5, BOF, IO1, IO2: IO = 1 mA

0.2

V

VOL4

BO2 to BO5, BOF, IO1, IO2: IO = 5 mA

1.0

V

BO2 to BO5, BOF, IO1, IO2: IO = 8 mA

1.6

V

VOL5

AOUT: IO = 1 mA, AIN = 1.3 V

0.5

V

IIH1

CE, CL, DI: VI = 6.5 V

5.0

µA

IIH2

IO1, IO2: VI = 13 V

5.0

µA

Input high-level voltage

IIH3

XIN: VI = VDD

0.3

0.6

1.4

µA

IIH4

FMIN, AMIN: VI = VDD

4.0

22

µA

IIH5

IFIN: VI = VDD

8.0

44

µA

IIH6

AIN: VI = 6.5 V

200

nA

IIL1

CE, CL, DI: VI = 0 V

5.0

µA

IIL2

IO1, IO2: VI = 0 V

5.0

µA

Input low-level current

IIL3

XIN: VI = 0 V

0.3

0.6

1.4

µA

IIL4

FMIN, AMIN: VI = 0 V

4.0

22

µA

IIL5

IFIN: VI = 0 V

8.0

44

µA

IIL6

AIN: VI = 0 V

200

nA

Output off leakage current

IOFF1

BO1 to BO5, BOF, AOUT, IO1, IO2: VO = 13 V

5.0

µA

IOFF2

DO: VO = 6.5 V

5.0

µA

High-level tree-state off

IOFFH

PD: VO = VDD

0.01

200

nA

leakage current

Low-level tree-state off

IOFFL

PD: VO = 0 V

0.01

200

nA

leakage current

Input capacitance

CIN

FMIN

6

pF

IDD1

VDD: Xtal = 75 kHz, fIN2 = 130 MHz, VIN2 = 40 mVrms

5

10

mA

Current drain

IDD2

VDD: PLL block stopped (PLL inhibit),

0.1

mA

Xtal oscillator operating (Xtal = 75 kHz)

IDD3

VDD: PLL block stopped, Xtal oscillator stopped

10

µA

No. 5038-5/23

LC72136, 72136M

Pin Functions

	Pin No.
Symbol	(MFP pin numbers	Type		Functions	Circuit configuration
	are in parentheses.)
XIN	1 (1)		•	Crystal oscillator connections (75 kHz)
		Xtal	• The extremely high input impedance of the XIN pins
XOUT	22 (24)			means that applications must take the possibility of
				leakage into account.
			•	FMIN is selected when the serial data input DVS bit is
				set to 1.
			• The input frequency range is from 10 to 160 MHz.
FMIN	16 (17)	Local oscillator	•	The input signal passes through the internal divide-by-
		signal input		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 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.
		Local oscillator		— The divisor can be in the range 272 to 65535, and
AMIN	15 (16)			the divisor used will be the value set.
		signal input
			•	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	3 (4)	Chip enable	•	Set this pin high when inputting (DI) or outputting (DO)
				serial data.
CL	5 (6)	Clock	•	Used as the synchronization clock when inputting (DI) or
				outputting (DO) serial data.
DI	4 (5)	Input data	•	Inputs serial data transferred from the controller to the
				LC72136.
			•	Outputs serial data transferred from the LC72136 to the
DO	6 (7)	Output data		controller. The data output is determined by the DOC0 to
				DOC2 bits in the serial data.
VDD	17 (18)		• The LC72136 power supply pin. (VDD = 4.5 to 5.5 V)
		Power supply	•	The power on reset circuit operates when power is first
				applied.
VSS	21 (22)	Ground	• The LC72136 ground

Continued on next page.

No. 5038-6/23

LC72136, 72136M

Continued from preceding page.

Pin No.

Symbol

(MFP pin numbers

Type

Functions

Circuit configuration

are in parentheses.)

•

Dedicated outputs

• The output states are determined by the BO1 to BO5

bits in the serial data.

Data: 0 = open, 1= low

BO1

7 (8)

• A time base signal (8 Hz) can be output from the BO1

pin. (When the serial data TBC bit is set to 1.)

BO2

8 (9)

•

Care is required when using the BO1 pin, since it has a

BO3

9 (10)

higher on impedance that the other output ports (pins

BO4

10 (11)

Output ports

BO2 to BO5).

•

The output state of the BOF pin is determined by the

BO5

14 (15)

serial data DVS bit. Thus this pin can be used as an FM

band selection switch. (Note that it should not be used

BOF

2 (3)

as an AM band selection switch since it is susceptible to

noise from the crystal oscillator.)

DVS data: 0 = open, 1 = low

•

All output ports are set to the open state following a

power on reset.

•

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

over the DO pin.

IO1

11 (12)

Input or output

Input state: low = 0 data value

ports

IO2

13 (14)

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

Charge pump

oscillator signal frequency by N is higher than the

PD

18 (19)

reference frequency, a high level is output from the PD

output

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

19 (20)

LPF amplifier

• The n-channel MOS transistor used for the PLL active

transistor

AOUT

20 (21)

low-pass filter.

connections

• Accepts an input in the frequency range 0.4 to 12 MHz.

•

The input signal is directly transmitted to the IF counter.

IFIN

12 (13)

IF counter

•

The result is output starting the MSB of the IF counter

using the DO pin.

• Four measurement periods are supported: 4, 8, 32, and

64 ms.

No. 5038-7/23