NTE712 查看數據表（PDF） - NTE Electronics

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NTE712

Integrated Circuit TV/FM Sound IF Detector

NTE Electronics 

Dynamic Characteristics (Cont’d): (V+ = 24V, TA = +25°C unless otherwise specified)

Parameter

Test Conditions

Min Typ Max

IF Amplifier and Detector (fo = 5.5MHz, ∆f = ±50kHz)

AM Rejection

Vin = 10mVrms, Note 1

Input Limiting Threshold Voltage

40 53 –

– 200 400

Recovered Audio Output Voltage Vin = 10mVrms

0.5 0.91 –

Output Distortion

Vin = 10mVrms

– 0.9 –

Input Impedance Components

Parallel Input Resistance

f = 4.5MHz, measurement between Pin1 and Pin2

– 17 –

Parallel Input Capacitance

–

4

–

Output Impedance Components f = 4.5MHz, measurement between Pin9 and GND

Parallel Output Resistance

– 3.25 –

Parallel Output Capacitance

– 3.6 –

Output Resistance

Pin7

– 7.5 –

Pin8

– 250 –

Attenuator

Volume Reduction Range

DC Volume Control = ∞

60 –

–

Maximum Undesirable Signal

DC Volume Control = ∞, Note 2

– 0.07 1.0

Audio Amplifier

Voltage Gain

Total Harmonic Distortion

Output Voltage

Vin = 0.1Vrms, f = 400Hz

VO = 2Vrms, f = 400Hz

THD = 5%, f = 400Hz

17.5 20.0 –

– 2.0 –

2.0 3.0 –

Input Resistance

f = 400Hz

– 70 –

Output Resistance

f = 400Hz

– 270 –

Unit

dB

µVrms

Vrms

%

kΩ

pF

kΩ

pF

kΩ

Ω

dB

mV

dB

%

Vrms

kΩ

Ω

Note 1. 100% FM, 30% AM Modulation.

Note 2. Undesirable signal is measured at Pin8 when volume control is set for minimum output.

Pin Connection Diagram

IF In Bias 1

IF In 2

GND 3

GND 4

V+ 5

DC Volume Control 6

De–Emphasis 7

14 Audio Input

13 Tone Control

12 Audio Output

11 N.C.

10 Quad Detector

9 Quad Detector

8 Detector Output

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