SANYO LA1650C, LA1650 Datasheet

Ordering number : ENN6310A

30300RM (OT) No. 6310-1/14

Overview

The LA1650 and LA1650C receive long-wave time
standard broadcasts (JG2AS in Japan and DCF77 in
Germany) and detect and output the time code multiplexed
on the long-wave time standard broadcast signal. Clocks
can automatically correct their time using the time code
information received by the LA1650 and LA1650C.

Features

• Low-voltage operation (VCCop = 1.2 V and higher)

• Low current drain (500 µA for @ 10 dBµ V input)

• Standby mode current: Less than 1 µA

• High sensitivity (Reception is possible at
Vin = 10 dBµ V.)

• Packages: DIP18 (LA1650)

Chip (LA1650C)

Functions

• RF amplifier, rectifier, detector, time code output,
standby circuit

Package Dimensions

unit: mm

3007A-DIP18

1

9

18

10

24.2

1.94 2.54

1.20.5

3.25

3.3

3.85max

0.25

7.62

6.4

SANYO: DIP18

[LA1650]

LA1650, 1650C

SANYO Electric Co.,Ltd. Semiconductor Company

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

Time Code Reception ICs

Monolithic Linear IC

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.

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max 7.5 V
Allowable power dissipation Pd max Ta ≤ 75°C 100 mW
Operating temperature Topr –20 to +75 °C
Storage temperature Tstg –40 to +125 °C

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

CC

1.5 V

Operating supply voltage range V

CC

OP 1.2 to 6.5 V

Operating Conditions at Ta = 25°C

No. 6310-2/14

LA1650, 1650C

Parameter Symbol Conditions

Ratings

Unit

min typ max

[Overall Characteristics]

Current drain I

CCO

No input 400 540 680 µA

Operating current I

CCfIN

= 40 kHz, VIN= 10 dBµV 370 510 650 µA

Standby current ISTB With the pin 5 (pad 5) voltage at 0 V 0.1 1.0 µA

[Amplifier Input Characteristics]

Input impedance ZI 1pin (PAD1) 450 kΩ
Input frequency range FIN 37.5 80.0 kHz
Minimum input voltage V

IN

min Pin 1 (pad 1) input 1 µVrms

Maximum input voltage V

IN

max Pin 1 (pad 1) input 100 mVrms

[Amplifier Output Characteristics] With pin 1 (pad 1) as the input pin, f

IN

= 40 kHz

Output voltage (1) V

O

1 No input, the pin 11 output 10 20 34 mVrms

Output voltage (2) V

O

2VIN= 10 dBµV, the pin 11 output 15 28 48 mVrms

Output voltage (3) V

O

3VIN= 20 dBµV, the pin 11 output 25 40 62 mVrms

Output voltage (4) V

O

4VIN= 80 dBµV, the pin 11 output 35 48 88 mVrms

[TCO Output Characteristics] With pin 1 (pad 1) as the input pin, f

IN

= 40 kHz

Output voltage (high) V

O

H No input 1.40 1.45 V

Output voltage (low) V

O

LVIN= 10 dBµV 0.05 0.10 V

Output pulse width (500 ms input) T500

V

IN

= 0 to 100 dBµV, AM modulation

480 500 650 ms

(1 Hz square wave, duty = 50%, 100% modulation)

Output pulse width (800 ms input) T800

VIN= 0 to 100 dBµV, AM modulation

750 800 970 ms

(1 Hz square wave, duty = 80%, 100% modulation)

Output pulse width (200 ms input) T200

V

IN

= 0 to 100 dBµV, AM modulation

180 200 400 ms

(1 Hz square wave, duty = 20%, 100% modulation)

Operating Characteristics at Ta = 25°C, VCC= 1.5 V, with the pin 5 used as V

CC,

in the specified test circuit,
unless otherwise specified. Values in parentheses refer to the LA1650C. (Using the Yamaichi Electronics IC37N­1803 socket.)

Chip Specifications (LA1650C)

No. 6310-3/14

LA1650, 1650C

Pad Coordinates (LA1650C)

Note: The origin (0, 0) is taken to be the left lower corner in the metal pattern figure on the next page.

The pad coordinates are the values of the coordinates of the center of the pad.

PAD Pad Symbol X-axis Y-axis

P1 Amplifier (1) input INPUT 585 1914
P2

AGC

AGC2 385 1914
P3 AGC1 154 1734
P4 V

CC

V

CC

158 1410
P5 Standby mode PON 154 1221
P6

Amplifier (1) output

AMP1_OUT1 154 711
P7 AMP1_OUT2 164 201
P8

Amplifier (2) input

AMP2_IN1 397 154

P9 AMP2_IN2 597 154

P10

Amplifier (2) output

AMP2_OUT2 864 154

P11 AMP2_OUT1 1086 154
P12

REC input

REC_IN1 1264 361
P13 REC_IN2 1264 531
P14 REC output REC_OUT1 1264 701
P15 DEC input DEC_IN1 1264 1455
P16 DEC output TCO 1264 1625
P17 GND GND 1113 1914
P18 REG REG 849 1914

Chip size 1.41 ×2.06 mm

2

Chip thickness 330 (±20) µm
Pad size 140 × 140 µm

2

Pad opening 115 × 115 µm

2

Metal Pattern Figure

No. 6310-4/14

LA1650, 1650C

2 1 18 17

16

1A1650

X : 1.41
Y : 2.06

15

14

13

12

111098

7

6

5

4

3

Pattern

Chip size

1A1650

A12842

NC

NC

Block Diagram and Test Circuit

No. 6310-5/14

LA1650, 1650C

1

Input

V

CC

2

10µF22µF

10µF

22µF

0.015µF

TCO

1MΩ

1MΩ

1000pF

1000pF

Power ON Standby

40 kHz crystal

100µF

3 4 5 6 7 8 9

18 17 16 15 14 13 12 11 10

AMP(1)

REG DEC

AMP(2)

REC

51Ω

+

+

+

+

+

A12758