March 1986
2
Philips Semiconductors
Product specification
Video modulator circuit
TDA6800
TDA6800T
GENERAL DESCRIPTION
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.
Features
•
Balanced modulator
•
Symmetrical oscillator
•
Video clamp circuit for negative modulation
•
Frequency range 50 to 800 MHz
QUICK REFERENCE DATA
PACKAGE OUTLINE
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.
MIN.
TYP.
MAX.
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
