NTE1237

Integrated Circuit

AM Radio without Audio Stage

Features:

D Small External Part Count

D Tuning Meter Circuit

D Wide AGC Range

18V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

500mW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–20

° to +70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55

° to +125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Maximum Sensitivity

MS

37.5 40.0 42.5

dB

Signal–to–Noise Ratio

S/N

8

12

–

dB

MOD = 30%

Input = 74dB/m

42

45

–

dB

Total Harmonic Distortion

THD

MOD = 30%, Input = 74dB/m

–

1.0

2.0

%

MOD = 80%, Input = 74dB/m

–

1.5

3.0

%

MOD = 30%, Input =120dB/m

–

2.5

10

%

Detector Voltage

140

170

230 mW

Tuning Meter Circuit

TM

Input = 74dB/m

50

–

100

%

Quiescent Current

–

13

21

mA