TDA3867 查看數據表（PDF） - Philips Electronics

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TDA3867

Quasi-split sound processor with two FM demodulators

Philips Electronics 

Philips Semiconductors

Preliminary specification

Quasi-split sound processor with two FM demodulators TDA3867T

FEATURES

• Quasi-split sound processor for all FM standards e.g. B/G

• Reduction of spurious video signals by tracking function and AFC for the vision carrier reference circuit; (indispensable

for NICAM)

• AF2 signal automatically muted (at B/G) by the input signal level

GENERAL DESCRIPTION

Symmetrical IF input and gain controlled wideband IF amplifier.

AGC generation due to peak sync Reference amplifier for the regeneration of the vision carrier.

Optimized limiting amplifier for AM suppression in the regenerated vision carrier signal and 90° phase shifter.

Intercarrier mixer for FM sound, output with low-pass filter.

Separate signal processing for 5.5 and 5.74 MHz intercarriers.

Wide supply voltage range, only 300 mW power dissipation at 5 V.

QUICK REFERENCE DATA

SYMBOL

VP

IP

Vi IF

Vo

THD

S/N (W)

PARAMETER

supply voltage (pin 24)

supply current (pin 24)

IF input sensitivity (−3 dB)

audio output signal (RMS value)

total harmonic distortion

weighted signal-to-noise ratio

for FM

for FM with 6 kHz sinus vision modulation

MIN.

4.5

−

−

−

−

TYP.

5

60

70

1

0.5

MAX.

8.8

72

100

−

−

UNIT

V

mA

µV

V

%

−

68

−

dB

−

56

−

dB

ORDERING AND PACKAGE INFORMATION

EXTENDED

TYPE NUMBER

TDA3867T

PINS

28

PACKAGE

PIN POSITION

mini-pack

MATERIAL

plastic

Note

1. SOT136-1; 1997 January 8.

CODE

SOT136A (1)

January 1992

2

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