January 1995

29

Philips Semiconductors

Objective specification

processor

TDA8366

Notes

1. On set AGC.

2. This parameter is not tested during production and is just given as application information for the designer of the

television receiver.

3. Measured at 10 mV (RMS) top sync input signal.

4. So called projected zero point, i.e. with switched demodulator.

5. Measured in accordance with the test line given in Fig.10. For the differential phase test the peak white setting is

reduced to 87%.

a) The differential gain is expressed as a percentage of the difference in peak amplitudes between the largest and

smallest value relative to the subcarrier amplitude at blanking level.

b) The phase difference is defined as the difference in degrees between the largest and smallest phase angle.

6. This parameter is not tested during production but is guaranteed by the design and qualified by means of matrix

batches which are made in the pilot production period.

7. This figure is valid for the complete video signal amplitude (peak white-to-black), see Fig.11.

8. The test set-up and input conditions are given in Fig.12. The figures are measured with an input signal of

10 mV RMS.

9. Measured with a source impedance of 75

Ω, where:

10. To obtain a good noise immunity of the AGC circuit the AGC detector is gated during the sync pulse. This gating is

switched-off during the vertical retrace to avoid disturbances of the signal amplitude due to phase errors of the

incoming video signal which are caused by the head-switching of VCRs.

contrast reduction starting

voltage

−

4

−

V

voltage difference for full

contrast reduction

−

2

−

V

brightness reduction starting

voltage

−

3

−

V

voltage difference for full

brightness reduction

−

2

−

V

internal bias voltage

−

4.5

−

V

internal charge current

−

40

−µA

discharge current due to

‘peak-white limiting’

−

200

−µA

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

S/N = 20 log

V

V

m rms

()

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