NTE722 Ver la hoja de datos (PDF) - NTE Electronics

Número de pieza

componentes Descripción

Fabricante

NTE722

Integrated Circuit FM Stereo Multiplex Decoder

NTE Electronics 

Electrical Characteristics: (TA = +25°C V+ = 12V, 200mVRMS standard stereo multiplex signal

applied to input, Note 3 unless otherwise specified)

Parameter

Test Conditions

Min Typ Max Unit

Supply Current

– 12 18 mA

Input Resistance

12 20 –

kΩ

Stereo Separation

f = 100Hz

– 40 –

dB

f = 1kHz

30 45 –

dB

f = 10kHz

20 40 –

dB

Channel Balance (Monaural Input)

– 0.2 –

dB

Total Harmonic Distortion

– 0.5 1.0 %

Voltage Gain

– 1.0 – V/V

67kHz Storecast Rejection

Note 4

– 55 –

dB

19kHz Pilot Level Required at Input

High Frequency Audio Components

in Left and Right Outputs

(dB Below 1kHz Output)

Stereo Indicator Lamp ON – 12 22 mVRMS

Stereo Indicator Lamp OFF 4.0 8.0 – mVRMS

19kHz

– 30 –

dB

38kHz

– 25 –

dB

Note 3. “Standard Stereo Multiplex Signal” here refers to a 200mVRMS (0.56VP–P) composite stereo

signal including 10% pilot with L = 1 and R = 1 as described in the FCC Rules of FM Broad-

casting.

Note 4. Measured with a stereo composite signal consisting of 80% stereo, 10% pilot and 10% SCA

as defined in the FCC Rules on FM Broadcasting.

14

8

Pin Connection Diagram

19kHz Filter 1

1

14 Decoupling

19kHz Filter 2

MPX Input 3

13 38kHz Filter

12 Right Output

N.C. 4

11 Left Output

N.C. 5

10 38kHz Filter Bias

Stereo Lamp 6

9 V+

GND 7

8 N.C.

.785 (19.95)

Max

.100 (2.45)

.600 (15.24)

7

.300 (7.62)

.200 (5.08)

Max

.099 (2.5) Min

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