LA1231 datasheet(3/8 Pages) SANYO

Numer części	LA1231

Szczegółowy opis	FM IF System

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LA1231N

No.660-3/8

Recommended Operating Conditions at Ta=25°C

Parameter

Symbol

Conditions

Ratings

Unit

Supply voltage

VCC

12

V

Operating Characteristics at Ta=25°C, VCC=12V, f=10.7MHz

Parameter

Symbol

Conditions

Ratings

min

typ

max

Unit

Quiescent current

ICCO

22

30

mA

Current drain

ICC

VIN=100dBµ

26.5

33

mA

Demodulated output

Vo

VIN=100dBµ, 400Hz-100% mod

240

330

460

mVrms

S/N

VIN=100dBµ, 400Hz-100% mod

72

78.5

dB

Input limiting voltage

VIN(lim)

Vo 3dB down, 400Hz-100% mod

25

31

dBµ

Total harmonic distortion

THD

VIN=100dBµ, 400Hz-100% mod

0.05

0.3

%

Muting sensitivity

VIN(mute)

V12=1.4V

23

29

35

dBµ

Muting attenuation

Mute(att)

V5=2V, VIN=100dBµ,

60

65

dB

400Hz-100% mod

Muting bandwidth

BW(mute) VIN=100dBµ, V12=1.4V

140

220

370

kHz

AM rejection ratio

AMR

VIN=100dBµ, FM : 400Hz-100% mod

45

60

dB

AM : 1kHz-30% mod

Muting driving output

V12

Quiescent

4.0

4.9

6.0

V

VIN=100dBµ

0

0.3

V

Signal meter driving output

V13

Quiescent

0

0.1

V

VIN=70dBµ

1.9

3.0

4.2

V

VIN=100dBµ

4.5

5.5

V

AGC output

V15

Quiescent

4.2

5.0

5.5

V

VIN=100dBµ

0

0.5

V

IF off current

I15(off)

Quiescent, V8-10≤20mV

10

35

60

µA

Voltage of muting operation

V16(mute) VIN=100dBµ, V12=1.4V

0.7

0.84

1.0

V

Offset voltage

V6-10 B

Quiescent, pin 6-10

–0.5

0

+0.5

V

V7-10 B

Quiescent, pin 7-10, R7-10=5.1kΩ

–0.25

0

+0.25

V

Pin voltage

V1

Quiescent

2.6

V

V2

Quiescent

2.6

V

V3

Quiescent

2.6

V

V6

Quiescent

5.6

V

V7

Quiescent

5.6

V

V8

Quiescent

5.4

V

V10

Quiescent

5.6

V

V12

Quiescent

4.9

V

V13

Quiescent

0

V

V15

Quiescent

5.0

V

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