NTE743 datasheet(2/3 Pages) NTE | Integrated Circuit Phase Lock Loop (PLL) Stereo Decoder

2 page

Electrical Characteristics:

(TA = +25°C, VCC = +12V, Composite Input = 300mVrms (L = R, Pilot OFF), Pilot Level = 30mVrms,

fm = 400Hz or 1KHz, unless otherwise indicated)

Characteristics

Test Conditions

Min

Typ

Max

Unit

Input Impedance

Pin2

353

–

Ω

Output Impedance

Pin4 or Pin5

–

Ω

Audio Voltage Gain

Desired Channel

0.7

1.0

1.4

Stereo Channel Separation

fm = 100Hz

–

fm = 400Hz

–

fm = 10kHz

–

Monaural Channel Balance

Pilot Level = 0V

–

0.1

1.5

Total Harmonic Distortion

Multiplex Level = 600mV

–

0.4

1.5

Ultrasonic Frequency Rejection 19kHz

–

38kHz

–

SCA Rejection

67KHz, Note 1

–

Stereo Switch Level

Pilot Only, Lamp On

–

mVrms

Pilot Only, Lamp Off

2.0

7.0

–

mVrms

VCO Tuning Resistance

Pin15, Note 2

Ω

VCO Frequency Drift

–20

°C < TA < +25°C

–

±0.5

±2.0

+25

°C < TA < +70°C

–

±0.5

±2.0

Stereo Lamp Hysteresis

Lamp Off to Lamp On

3.0

6.0

–

Capture Range

Permissable Tuning Error

–

4.0

–

Output Voltage Shift

Stereo to Mono Operation

–

±30

–

Lamp Output Current

Short Circuit, Lamp On

100

–

Lamp Off

–

1.0

100

Lamp Driver Terminal Voltage

ILAMP = 50mA

–

1.3

2.0

Supply Current

Lamp Off

–

Power Supply Rejection

200Hz, 200mVrms

–

Note 1. Measured with a stereo composite signal of 80% stereo, 10% pilot, and 10% SCA.

Note 2. Total resistance from Pin15 to GND, to set reference frequency at Pin11 to 19kHz

±10Hz

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