LA1787NM

No.A0229-2/6

Specifications

Maximum Ratings at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

VCC1 max

Pins 6, 40, and 61

9.0

V

Maximum supply voltage

VCC2 max

Pins 7, 45, 54, 59, and 60

12

V

Allowable power dissipation

Pd max

Ta ≤ 55

°C

950

mW

Operating temperature

Topr

-40 to +85

°C

Storage temperature

Tstg

-40 to +150

°C

Recommended Operating Conditions at Ta = 25°C

Parameter

Symbol

Conditions

Ratings

Unit

VCC

Pins 6, 7, 40, 45, 54, 59, 60, and 61

8.0

V

Recommended supply voltage

VCCST IND

Pins 26

5

V

Operating supply voltage range

VCC op

7.5 to 9.0

V

* : Note that these tests are made using an IC socket, models IC-51-0644-824 and KS8277 (Yamaichi Electronics Co., Ltd.).

Switch settings

Ratings

Parameter

Symbol

Conditions

123456789

10

min

typ

max

Unit

FM Characteristics - FM IF Input

Quiescent

current

ICCO-FM

No input, I40+I45+I54+I59+I60+I61

ON

B OFF B

ON OFF OFF ON

60

94

110

mA

Demodulated

output

VO-FM

10.7MHz, 100dB

µ, 1kHz,

100% modulation, the pin 15 output

ON

B OFF B

ON OFF OFF ON

205

310

415 mVrms

Pin 31

demodulated

output

VO-FM31

10.7MHz, 100dB

µ, 1kHz,

100% modulation, the pin 31 output

ON

B OFF B

ON OFF OFF ON

190

295

380 mVrms

Channel

balance

CB

10.7MHz, 100dB

µ, 1kHz,

Pins 15, 16 ratio

ON

B OFF B

ON OFF OFF ON

-1

0

+1

dB

Total harmonic

distortion

THD-FMmono 10.7MHz, 100dB

µ, 1kHz,

100% modulation, pin 15

ON

B OFF B

ON OFF OFF ON

0.3

1

%

Signal-to-noise

ratio (IF)

S/N-FM IF

10.7MHz, 100dB

µ, 1kHz,

100% modulation, pin 15

ON

B OFF B

ON OFF OFF ON

75

82

dB

AM rejection

ratio (IF)

AMR IF

10.7MHz, 100dB

µ, 1kHz, fm = 1kHz,

pin 15 when 30% AM

ON

B OFF B

ON OFF OFF ON

55

68

dB

Muting

attenuation (1)

Att-1

10.7MHz, 100dB

µ, 1kHz,

The pin 15 attenuation when V33 is

changed from 0 to 2V

ON

B OFF B

ON OFF OFF ON

5

10

15

dB

Muting

attenuation (2)

Att-2

10.7MHz, 100dB

µ, 1kHz,

The pin 15 attenuation when V33 is

changed from 0 to 2V *

1

ON

B OFF B

ON ON OFF ON

15

20

25

dB

Muting

attenuation (3)

Att-3

10.7MHz, 100dB

µ, 1kHz,

The pin 15 attenuation when V33 is

changed from 0 to 2V *

2

ON

B OFF B

ON ON OFF ON

28

33

38

dB

Separation

Separation

10.7MHz, 100dB

µ, L+R = 90%,

pilot = 10%, the pin 15 output ratio

ON

B OFF B

ON OFF OFF ON

30

40

dB

Stereo on level

ST-ON

The pilot modulation such that V26 is

less than 0.5V

ON

B OFF B

ON OFF OFF ON

2.1

4.1

6.1

%

Stereo off level

ST-OFF

The pilot modulation such that V26 is

less than 3.5V

ON

B OFF B

ON OFF OFF ON

1.3

3.2

%

Main distortion

THD-Main L

10.7MHz, 100dB

µ, L+R = 90%,

pilot = 10%, pin 15

ON

B OFF B

ON OFF OFF ON

0.3

1.2

%

Pilot

cancellation

PCAN

10.7MHz, 100dB

µ, pilot = 10%,

Pin 15 signal

The pilot level leakage, DIN audio

ON

B OFF B

ON OFF OFF OFF

/ON

20

30

dB

SNC output

attenuation

AttSNC

10.7MHz, 100dB

µ, L-R = 90%,

pilot = 10%, V28 = 3V

→0.6V, pin 15

ON

B OFF B

ON OFF OFF ON

1

5

9

dB

Continued on next page.