LA1787NM

No.A0229-4/6

Continued from preceding page.

Switch settings

Ratings

Parameter

Symbol

Conditions

123456789

10

min

typ

max

Unit

Pin 31 detection

output

VO-AM31

1MHz, 74dBµ, fm = 1kHz,

30% modulation, pin 31

OFF

OFF B

ON ON

110

175

230 mVrms

AGC-F.O.M

VAGC-FOM 1MHz, 74dBµ, referenced to the

output, the input width such that the

output falls by 10dB, pin 15

OFF

OFF B

ON ON

51

56

61

dB

Signal-to-noise

ratio

S/N-AM

1MHz, 74dBµ, fm = 1kHz,

30% modulation

OFF

OFF B

ON ON

47

52

dB

Total harmonic

distortion

THD-AM

1MHz, 74dBµ, fm = 1kHz,

80% modulation

OFF

OFF B

ON ON

0.3

1

%

VSMAM-1

No input

OFF

OFF B

ON ON

0.0

0.2

0.5

V

S-meter output

VSMAM-2

1MHz, 130dBµ, no modulation

OFF

OFF B

ON ON

4.8

6.0

7.3

V

Oscillator buffer

output

OFF

OFF B

ON ON

185

230

mVrms

W-AGCsen1 1.4MHz, the input when V46 = 0.7V

OFF

OFF B

ON ON

92

98

104

dB

µ

Wideband AGC

sensitivity

W-AGCsen2 1.4MHz, the input when V46 = 0.7V

(during a seek)

OFF

OFF B

ON ON

83

89

95

dB

µ

SD-sen1AM

1MHz, the ANT input level such that

the IF counter output turns on.

OFF

OFF B

OFF OFF

24

30

36

dB

µ

SD sensitivity

SD-sen2AM

1MHz, the ANT input level such that

the SD pin goes to the on state.

OFF

OFF B

OFF OFF

24

30

36

dB

µ

IF buffer output

VIFBUFF-AM

1MHz, 74db

µ non-mod, the pin 23

output

OFF

OFF B

OFF OFF

200

290

mVrms

*1: When the value of the resistor between pin 58 and ground is 200k

Ω.

*2: When the value of the resistor between pin 58 and ground is 30k

Ω.

Package Dimensions

unit : mm

3159A