TDA6103Q/N3 Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

TDA6103Q/N3

Video output amplifier

Philips Electronics 

Philips Semiconductors

Triple video output amplifier

Preliminary specification

TDA6103Q

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP. MAX. UNIT

ts

SR

Ov

SVRR

settling time 50% input to

(99% < output < 101%)

Voc(p-p) = 100 V square

−

wave; f < 1 MHz;

tr = tf = 40 ns (pins 1, 2

and 3); see Figs 7 and 8

slew rate between

V1−5 = V2−5 = V3−5 = 2 V −

50 V to (VDD − 50 V); (pins 7, 8 and square wave (p-p);

9)

f < 1 MHz; tr = tf = 40 ns

(pins 1, 2 and 3)

cathode output voltage overshoot Voc(p-p) = 100 V square

−

(pins 7, 8 and 9)

wave; f < 1 MHz;

tr = tf = 40 ns (pins 1, 2

and 3); see Figs 7 and 8

supply voltage rejection ratio

f < 50 kHz; note 2

−

−

350

ns

1600 −

V/µs

5

−

%

70

−

dB

Notes

1. See also Fig.6 for the typical low-frequency response of Vi to Voc.

2. The ratio of the change in supply voltage to the change in input voltage when there is no change in output voltage.

Cathode output

The cathode output is protected against peak currents

(caused by positive voltage peaks during high-resistance

flash) of 5 A maximum with a charge content of 50 µC.

The cathode is also protected against peak currents

(caused by positive voltage peaks during low-resistance

flash) of 10 A maximum with a charge content of 100 nC.

The DC voltage of VDD (pin 6) must be within the operating

range of 180 to 210 V during the peak currents.

Flashover protection

The TDA6103Q incorporates protection diodes against

CRT flashover discharges that clamp the cathode output

voltage up to a maximum of VDD + Vdiode. To limit the diode

current, an external 1.5 kΩ carbon high-voltage resistor in

series with the cathode output and a 2 kV spark gap are

needed (for this resistor-value, the CRT has to be

connected to the main PCB). This addition produces an

increase in the rise- and fall times of approximately 5 ns

and a decrease in the overshoot of approximately 3%.

VDD to GND must be decoupled:

1. With a capacitor >20 nF with good HF behaviour (e.g.

foil). This capacitance must be placed as close as

possible to pins 6 and 4, but definitely within 5 mm.

2. With a capacitor >10 µF on the picture tube base print.

Switch-off behaviour

The switch-off behaviour of the TDA6103Q is controllable.

This is due to the fact that the output pins of the

TDA6103Q are still under control of the input pins for

relative low-power supply voltages (approximately 30 V

and higher).

March 1994

6

Share Link: