Philips TDA6800T User Manual

March 1986

2

The TDA6800 is a modulator circuit for modulation of video signals on a VHF/UHF carrier. The circuit requires a 5 V
power supply and few external components for the negative modulation mode. For positive modulation an external clamp
circuit is required. This circuit can be used as a general purpose modulator without additional external components.

•

Balanced modulator

•

Symmetrical oscillator

•

Video clamp circuit for negative modulation

•

Frequency range 50 to 800 MHz

TDA6800  : 8-lead dual in-line; plastic (SOT97A); SOT 97-1; 1996 november 29.

TDA6800T: 8-lead mini-pack; plastic (SO8; SOT96A); SOT 96-1; 1996 november 29.

Supply voltage range

V

5

−

4

4,5

−

5,5

V

Supply current consumption

I

5

−

9

−

mA

Video input voltage

V

8(p

−

p)

−

1

−

V

Input impedance

R

8

30

−

−

k

Ω

Output voltage (50 MHz)

V

6-7

−

13

−

mV

Output voltage (600 MHz)

V

6-7

−

10

−

mV

Differential gain

∆

G

−

−

10

%

Differential phase

∆

φ

−

−

10

deg.

Intermodulation distortion

d

int

−

−

80

−

dB