Philips TDA3561A Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TDA3561A

PAL decoder

Product speciﬁcation File under Integrated Circuits, IC02

September 1982

Philips Semiconductors Product speciﬁcation

PAL decoder TDA3561A

GENERAL DESCRIPTION

The TDA3561A is a decoder for the PAL colour television standard. It combines all functions required for the identification and demodulation of PAL signals. Furthermore it contains a luminance amplifier, an RGB-matrix and amplifier. These amplifiers supply output signals up to 5 V peak-to-peak (picture information) enabling direct drive of the discrete output stages. The circuit also contains separate inputs for data insertion, analogue as well as digital, which can be used for text display systems (e.g. (Teletext/broadcast antiope), channel number display, etc. Additional to the TDA3560, the circuit includes the following features:

• The peak white limiter is only active during the time that the 9,3 V level at the output is exceeded. The start of the limiting function is delayed by one line period. This avoids peak white limiting by test patterns which have abrupt transitions from colour to white signals.

• The brightness control is obtained by inserting a variable pulse in the luminance channel. Therefore the ratio of brightness variation and signal amplitude at the three outputs will be identical and independent of the difference in gain of the three channels. Thus discolouring due to adjustment of contrast and brightness is avoided.

• Improved suppression of the internal RGB signals when the device is switched to external signals, and vice versa.

• Non-synchronized external RGB signals do not disturb the black level of the internal signals.

• Improved suppression of the residual 4,4 MHz signal in the RGB output stages.

• Cascoded stages in the demodulators and burst phase detector minimize the radiation of the colour demodulator

inputs.

• High current capability of the RGB outputs and the chrominance output.

QUICK REFERENCE DATA

Supply voltage V Supply current I Luminance input signal (peak-to-peak value) V Chrominance input signal (peak-to-peak value) V Data input signals (peak-to-peak value) V

1−27

10-27(p-p) 3-27(p-p) 13, 15, 17-27(p-p)

type. 12 V typ. 85 mA typ. 0,45 V 55 to 1100 mV typ. 1 V

RGB output signals at nominal contrast

and saturation (peak-to-peak value) V

12, 14, 16-27(p-p)

typ. 5,25 V Contrast control range typ. 20 dB Saturation control range min. 50 dB Input voltage for data insertion V Blanking input voltage V Burst gating and black-level gating input voltage V

9-27 8-27 8−27

min. 0,9 V

typ. 1,5 V

typ. 7 V

PACKAGE OUTLINE

28-lead DIL; plastic (SOT 117); SOT117-1; 1996 November 21.

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Philips Semiconductors Product speciﬁcation

PAL decoder TDA3561A

September 1982 3

Fig.1 Block diagram.

Philips Semiconductors Product speciﬁcation

PAL decoder TDA3561A

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)

Supply voltage V Total power dissipation; see also Fig.2 P Storage temperature range T Operating ambient temperature range T

THERMAL RESISTANCE

P tot stg amb

= V

1-27

max. 13,2 V

max. 1,7 W

−25 to + 150 °C

−25 to + 65 °C

From junction to ambient R

th j-a

= 50 K/W

CHARACTERISTICS

P=V1-27

= 12 V; T

Supply voltage V

=25°C; unless otherwise speciﬁed

amb

P=V1−27

typ. 12 V

8 to 13,2 V

Supply current

Total power dissipation P

tot

typ. 85 mA < 115 mA typ. 1,0 W

< 1,4 W Luminance input (pin 10) Input voltage (peak-to-peak value); note 1 V

Input level before clipping V Input current; input level 2 V, clamp not active I

10-27(p-p) 10−27

typ. 0,45 V

< 2V

typ. 0,15 µA

< 1 µA Contrast control range (see Fig.3) −17 to + 3dB Control voltage for 40 dB attenuation V Input current contrast control at V

=3 V I

7−27

7-27

typ. 1,2 V

< 10 µA

Chrominance ampliﬁer

Input voltage (peak-to-peak value); note 2 V

(p-p) typ. 550 mV

3-27

55 to 1100 mV Input impedance |Z

Input capacitance C

3−27

typ. 9 kΩ

6 to 12 kΩ

typ. 4 pF

< 6pF A.C.C. control range > 30 dB Change of the burst signal at the output

over the whole control range < 1,5 dB

Gain at nominal contrast/saturation

pin 3 to pin 28; note 3 > 32 dB

Output signal (peak-to-peak value)

at nominal contrast/saturation;

28-27(p-p)

typ. 1,7 V

burst signal: 0,5 V peak to peak

September 1982 4

Philips Semiconductors Product speciﬁcation

PAL decoder TDA3561A

Maximum output voltage (peak-to-peak value)

=2 kΩ V

28-27(p-p)

Distortion of chrominance ampliﬁer at V

28-27(p-p)

= 2 V up to V

3-27(p-p)

= 1 V d

Frequency response between 0 and 5 MHz −2dB Saturation control range (see Fig.4) > 50 dB Input current saturation control at V

=3 V I

6−27

Tracking between luminance and chrominance

with contrast control over a range of 10 dB < 2dB

Cross-coupling between luminance

and chrominance amplifier; note 10 <−46 dB

Signal-to-noise ratio

at nominal input signal; note 11 S/N > 56 dB

Phase shift between burst and chrominance

at nominal contrast/saturation ∆ ϕ < ± 5 Output impedance of chrominance ampliﬁer Z Maximum output current I

 typ. 25 Ω

28-27

Reference part

Phase locked loop:

− catching range; note 4 > 500 Hz

− phase shift; note 5 < 5°

Oscillator:

− temperature coefﬁcient of oscillator frequency; note 4 typ. −1,5 Hz/K

− frequency deviation for V

− input resistance (pin 26) R

− input capacitance (pin 26) C

− output resistance (pin 25) R

− output voltage (peak-to-peak value; pin 25) V

changing from 10 to 13,2 V; note 4 typ. 40 Hz

26-27

25-27

25−27(p-p)

A.C.C. generation:

− reference voltage (pin 4) V

− control voltage at nominal input signal (pin 2) V

− control voltage without chrominance input (pin 2) V

− colour-off voltage (pin 2) V

− colour-on voltage (pin 2) V

− identiﬁcation-on voltage (pin 2) V

4−27 2−27 2−27 2−27 2−27 2−27

typ. 4,0 V

typ. 1,5 %

< 5%

< 15 µA

< 15 mA

typ. 700 Hz

typ. 340 Ω

260 to 420 Ω

< 10 pF typ. 150 Ω

100 to 200 Ω

typ. 700 mV

typ. 4,9 V typ. 5,1 V typ. 2,65 V typ. 3,15 V typ. 3,4 V typ. 1,9 V

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