LA1823, LA1823M

No.6854-2/12

Operating Conditions at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Recommended supply voltage

VCC

4.5

V

Operation supply voltage range

VCC op

1.8 to 6.0

V

Operating Characteristics at Ta

= 25°C, VCC = 4.5V, in the specified test circuit

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

Quiescent supply current

FM-mode quiescent current

ICC (FM)

10.0

15.0

20.0

mA

AM-mode quiescent current

ICC (AM)

6.5

9.2

14.5

mA

FM front-end characteristics at fc = 98MHz, VIN = 60dBμV EMF, fm = 1kHz, 22.5kHz dev

Local oscillator voltage

VOSC

No. input, fosc = 108.7MHz,

the pin 20 output

100

mVrms

Input limiting voltage

3dB L.S.

Referenced to 22.5kHz dev, a 3dB down input

12

dB

μV EMF

FM IF characteristics (monaural) at fc = 10.7MHz, VIN = 100dBμV, fm = 1kHz, 75kHz dev

Demodulation output

VO

The pin 16 output

125

165

210

mVrms

Signal-to-noise ratio

S/N

The pin 16 output

63

72

dB

Total harmonic distortion

(monaural)

THD

The pin 16 output

0.5

1.5

%

Input limiting voltage

3dB L.S.

Referenced to 75kHz dev, a 3dB down input

31

38

45

dB

μV

IF count buffer on level

IF buff on

No modulation

35

45

55

dB

μV

IF count buffer output

VIF buff

No modulation, the pin 7 output

120

180

240

mVrms

FM IF characteristics (stereo) at fc = 10.7MHz, VIN = 100dBμV, fm = 1kHz, 75kHz dev, L+R = 90%, PILOT = 10%

Separation

SEP

Left channel modulated, the pin 16 and pin 17

outputs

25

40

dB

Stereo on level

ST-ON

The pilot modulation such that the pin 8 voltage

becomes lower than 0.5V

2.4

3.5

7.2

%

Total harmonic distortion (stereo)

THD

Main modulation, the pin 16 output

0.5

1.7

%

AM characteristics at fc = 1000kHz, fm = 1kHz, mod = 30%

Detector output

VO1

VIN = 23dBμV, the pin 16 output

14

26

50

mVrms

VO2

VIN = 80dBμV, the pin 16 output

50

75

120

mVrms

Signal-to-noise ratio

S/N1

VIN = 23dBμV, the pin 16 output

15

20

dB

S/N2

VIN = 80dBμV, the pin 16 output

47

54

dB

Total harmonic distortion

THD

VIN = 80dBμV, the pin 16 output

0.5

1.5

%

OSC buffer output

VOSC buff

No input, the pin 8 output

80

100

160

mVrms

IF count buffer on level

IF buff on

No modulation

15

25

32

dB

μV

IF count buffer output

VIF buff

VIN = 80dBμV, no modulation, the pin 7 output

110

180

220

mVrms