TDA8501 datasheet(2/30 Pages) PHILIPS

2 / 30 page

April 1993

Philips Semiconductors

Preliminary speciﬁcation

PAL/NTSC encoder

TDA8501

FEATURES

• Two input stages: R, G, B and −(R−Y), −(B−Y), Y with

multiplexing

• Chrominance processing, highly integrated, includes

low frequency filters for the colour difference signals,

and after the modulator a bandpass filter

• Fully controlled modulator produces a signal according

to the PAL or NTSC standard without adjustments

• A free running oscillator. Can be tuned by crystal or by

an external frequency source

• Output stages with separated Y + SYNC and

chrominance (Y + C, SVHS), and a CVBS output. Signal

amplitudes are correct for 75

Ω driving via an external

emitter follower. Internal generation of NTSC setup

• Sync separator circuit and pulse shaper, to generate the

required pulses for the processing, clamping, blanking,

FH/2, and burst pulse

• H/2 control pin. In PAL mode the internally generated

H/2 is connected to this pin and the phase of this signal

can be reset

• Internal bandgap reference.

GENERAL DESCRIPTION

The TDA8501 is a highly integrated PAL/NTSC encoder IC

which is designed for use in all applications where R, G

and B or Y, U and V signals require transformation to PAL

or NTSC values.The specification of the input signals are

fully compatible with the specification of those of the

TDA8505 SECAM-encoder.

ORDERING INFORMATION

Note

SOT234-1; 1996 December 2.

SOT137-1; 1996 December 2.

EXTENDED TYPE

NUMBER

PACKAGE

PINS

PIN POSITION

MATERIAL

CODE

TDA8501

DIL

plastic

SOT234AH2(1)

TDA8501T

plastic

SOT137AH1(2)

TDA8501 Datasheet(PDF) 2 Page - NXP Semiconductors

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