NTE708 datasheet(2/3 Pages) NTE

Part #	NTE708

Description	Integrated Circuit TV/FM Sound IF Amplifier

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Manufacturer	NTE [NTE Electronics]

Direct Link	http://www.nteinc.com

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Dynamic Characteristics: (FM Modulation Freq = 1kHz, Source Resistance = 50

Ω,

TA = +25°C for all tests)

Parameter

Test Conditions

Min

Typ

Max

Unit

(V+ = 12V, fo = 4.5MHz, ∆f = ±25kHz, Peak Separation = 150kHz)

Amplifier Voltage Gain

10

Vin ≤ 50µVrms

–

60

–

dB

AM Rejection

1

Vin = 10mVrms, Note 1

–

36

–

dB

Input Limiting Threshold Voltage

4

–

250

–

µVrms

Recovered Audio Output Voltage

1

Vin = 10mVrms

–

0.72

–

Vrms

Output Distortion

1

Vin = 10mVrms

–

3

–

%

(V+ = 12V, fo = 5.5MHz, ∆f = ±50kHz, Peak Separation = 260kHz)

Amplifier Voltage Gain

10

Vin ≤ 50µVrms

–

60

–

dB

AM Rejection

1

Vin = 10mVrms, Note 1

–

40

–

dB

Input Limiting Threshold Voltage

4

–

250

–

µVrms

Recovered Audio Output Voltage

1

Vin = 10mVrms

–

1.2

–

Vrms

Output Distortion

1

Vin = 10mVrms

–

5

–

%

(V+ = 8V, fo = 10.7MHz, ∆f = ±75kHz, Peak Separation = 550kHz)

Amplifier Voltage Gain

10

Vin ≤ 50µVrms

–

53

–

dB

AM Rejection

1

Vin = 10mVrms, Note 1

–

37

–

dB

Input Limiting Threshold Voltage

4

–

600

–

µVrms

Recovered Audio Output Voltage

1

Vin = 10mVrms

–

0.3

–

Vrms

Output Distortion

1

Vin = 10mVrms

–

1.4

–

%

(V+ = 12V, fo = 10.7MHz, ∆f = ±75kHz, Peak Separation = 550kHz)

Amplifier Voltage Gain

10

Vin ≤ 50µVrms

–

53

–

dB

AM Rejection

1

Vin = 10mVrms, Note 1

–

45

–

dB

Input Limiting Threshold Voltage

4

–

600

–

µVrms

Recovered Audio Output Voltage

1

Vin = 10mVrms

–

0.48

–

Vrms

Output Distortion

1

Vin = 10mVrms

–

1.4

–

%

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

Pin Connection Diagram

1

2

3

4

Audio Output

Detector Input Ref

N.C.

IF Input

5

Decoupling

6

IF Input Ref

7

GND

14

13

12

11

De–Emphasis

Det Input (QuadratureNetwork)

Test Point

10 Amplifier Output

9

Amplifier Low Output

8

N.C.

VCC

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