TDA4657T datasheet(2/17 Pages) PHILIPS

Nome de Peças	TDA4657T

Descrição Electrónicos	Generic multi-standard decoder

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Fabricante Electrônico	PHILIPS [NXP Semiconductors]

Página de início	http://www.nxp.com

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June 1993

2

Philips Semiconductors

Preliminary speciﬁcation

Generic multi-standard decoder

TDA4657

FEATURES

• Low voltage (8 V)

• Low power dissipation (250 mW)

• Automatic standard recognition

• No adjustments required

• Reduced external components

• Not all time constants integrated

(ACC, SECAM de-emphasis).

GENERAL DESCRIPTION

The TDA4657 is a monolithic integrated multi-standard

colour decoder for PAL, SECAM and NTSC 4.43 MHz with

negative colour difference output signals. It is adapted to

the integrated baseband delay line TDA4660/61.

QUICK REFERENCE DATA

Notes to the quick reference data

1.

Within 2 dB output voltage deviation.

2. Burstkey width 4.3

µs

Burst width 2.25

µs,

ratio burst chrominance amplitude 1/2.2.

ORDERING INFORMATION

Note

1. SOT146-1; 1996 November 26.

2. SOT163-1; 1996 November 26.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP. MAX.

UNIT

Supply

VP

supply voltage

7.2

8.0

8.8

V

IP

supply current

VP = 8.0 V; without load 25

31

37

mA

Ptot

total power dissipation

VP = 8.0 V; without load −

248

296

mW

Inputs

V9

chrominance input voltage

(peak-to-peak value)

note 1

20

200

400

mV

V20

sandcastle input voltage

−−

13.2

V

Outputs

V1

colour difference output signals

(peak-to-peak value)

independent of supply voltage; note 2

−(R−Y) output PAL and NTSC 4.43 MHz

442

525

624

mV

SECAM

950

1050 1150

mV

V3

−(B−Y) output PAL and NTSC 4.43 MHz

559

665

791

mV

SECAM

1200

1330 1460

mV

EXTENDED

TYPE NUMBER

PACKAGE

PINS

PIN POSITION

MATERIAL

CODE

TDA4657

20

DIL

plastic

SOT146(1)

TDA4657T

20

SO

plastic

SOT163A(2)

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