NTE748 Просмотр технического описания (PDF) - NTE Electronics

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Компоненты Описание

производитель

NTE748

Integrated Circuit TV Sound Circuit

NTE Electronics 

Electrical Characteristics (Cont’d): (V+ = 12V, TA = +25°C, f = 4.5MHz, Deviation = ±25kHz

unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Recovered Audio (Pin2)

Audio Preamplifier

IF Voltage Gain

Parallel Input Resistance

Parallel Input Capacitance

Nominal Zener Voltage

Power Supply Current

Power Dissipation

VA

AVP

AVIF

Rin

Cin

VReg

ID

PD

f = 4.5MHz, Deviation = ±25kHz, QL = 24, Note 1 0.35 0.50 –

f = 5.5MHz, Deviation = ±50kHz, QL = 30, Note 1 – 0.80 –

Open Loop Gain

– 25 –

– 65 –

– 9.0 –

– 6.0 –

IZ = 5mA

IZ = 5mA

IZ = 5mA

– 11.6 –

– 31 –

– 300 375

Vrms

Vrms

dB

dB

kΩ

pF

V

mA

mW

Note 1. QL is loaded circuit Q.

Pin Connection Diagram

Bypass 1

Audio Output 2

Bypass 3

IF Input 4

Bypass 5

Bypass 6

GND 7

14 VCC

13 Quadrature Network

12 Test Point

11 Quadrature Bypass

10 Preamp Output

9 Preamp Input

8 IF Output

14

8

1

7

.785 (19.95)

Max

.200 (5.08)

Max

.300

(7.62)

.100 (2.45)

.600 (15.24)

.099 (2.5) Min

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