TDA6103 Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Lista de partido

TDA6103

Video output amplifier

Philips Electronics 

Philips Semiconductors

Triple video output amplifier

Preliminary specification

TDA6103Q

1,2,3

5

to

differential

stage

GND

4

VDD

6

TDA6103Q

(1)

from

input

circuit

to

differential

stage

to

differential

stage

to

differential

stage

from

input

circuit

Vbias

7,8,9

(1) All pins have an energy protection for positive or negative overstress situations.

Fig.10 Internal pin configuration.

MGA971

Dissipation

Regarding dissipation, distinction must first be made between static dissipation (independent of frequency) and dynamic

dissipation (proportional to frequency).

The static dissipation of the TDA6103Q is due to voltage supply currents and load currents in the feedback network and

CRT.

The static dissipation equals:

Pstat = VDD × IDD − 3 × Voc × (Voc/Rfb − IOC)

Rfb = value of feedback resistor.

IOC = DC-value of cathode current.

The dynamic dissipation equals:

Pdyn = 3 × VDD × (CL + Cfb + Cint) × fi × Vo(p-p) × δ

CL = load capacitance.

Cfb = feedback capacitance.

Cint = internal load capacitance (≈4 pF).

fi = input frequency.

Vo(p-p) = output voltage (peak-to-peak value).

δ = non-blanking duty-cycle.

The IC must be mounted on the picture tube base print to minimize the load capacitance (CL).

March 1994

11

Share Link: