TEA0677T Просмотр технического описания (PDF) - Philips Electronics

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TEA0677T

Dual pre-amplifier and equalizer for reverse tape decks

Philips Electronics 

Philips Semiconductors

Dual pre-amplifier and equalizer for

reverse tape decks

Product specification

TEA0677T

FEATURES

• Head pre-amplifiers

• Reverse head switching

• Equalization with electronically switched time constants

• 0 dB = 387.5 mV

• Pin compatible to TEA0675 Dolby B, music search IC.

GENERAL DESCRIPTION

The TEA0677T is a monolithic bipolar integrated circuit

intended for applications in car radios. It includes head and

equalization amplifiers with electronically switchable time

constants. Furthermore it includes electronically

switchable inputs for tape drives with reverse heads. The

device is intended to replace the regular TEA0675T in

low-cost car radios using the same PCB. External

components that are necessary for Dolby B and music

search features can be omitted.

The device will operate with power supplies in the range of

7.6 V to 12.0 V, output overload level increasing with

increase in supply voltage. Current drain varies with

supply voltage, so it is advisable to use a regulated power

supply or a supply with a long time constant.

QUICK REFERENCE DATA

SYMBOL

VCC

ICC

(S + N)/N

PARAMETER

supply voltage

supply current

signal-plus-noise to noise ratio

MIN.

7.6

−

68

TYP.

10

23

74

MAX.

12

26

−

UNIT

V

mA

dB

ORDERING INFORMATION

EXTENDED TYPE

NUMBER

TEA0677T

PINS

24

Note

1. SOT137-1; 1996 August 27.

PIN POSITION

SO

PACKAGE

MATERIAL

plastic

CODE

SOT137A(1)

August 1993

2

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