March 1986
4
Philips Semiconductors
Product specification
Video modulator circuit
TDA6800
TDA6800T
CHARACTERISTICS
V
P
= 5 V; T
amb
= 25
°
C; measured in Fig.1; unless otherwise specified
Notes
1. Input signal:
d.c. 0,45 V (V
8-4
= 1,85 V)
4,4 MHz; input voltage (p-p) = 0,6 V
5,5 MHz; input voltage (p-p) = 1,26 V
measured with respect to picture carrier, at f = 600 MHz.
2. Input signal:
d.c. 1 V (V
8-4
= 3,5 V)
5,5 MHz AM modulated, f
m
= 100 kHz
m = 0,8; input voltage (p-p) = 2,27 V (including modulation)
measured with respect to the picture carrier, at f = 600 MHz.
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply voltage range
V
5-4
4,5
−
5,5
V
Supply current consumption
I
5
−
9
13
mA
Video input voltage
V
8(p-p)
−
1
−
V
Input impedance
R
8
30
−
−
k
Ω
Voltage (d.c.) at video
input (clamp voltage)
V
8
−
1,4
−
V
Voltage (d.c.) at
sound input
V
1
−
2,5
−
V
Output voltage f = 50 MHz; R
L
= 75
Ω
V
6-7
−
13
−
mV
Output voltage f = 600 MHz; R
L
= 75
Ω
V
6-7
−
10
−
mV
Differential gain
∆
G
−
−
10
%
Differential phase
∆
φ
−
−
10
deg.
Intermodulation
(1,1 MHz) (note 1)
−
−
80
−
60
dB
Frequency shift
V
b
= 5%, f = 600 MHz
∆
f
−
−
100
kHz
Frequency shift
V
b
= 5%, f = 800 MHz
∆
f
−
tbf
−
kHz
Frequency drift
25 to 40
°
C
∆
f
−
−
100
kHz
Frequency drift
15 to 55
°
C
∆
f
−
−
300
kHz
Positive modulation
(see Fig.3)
Residual carrier voltage
V
r
−
−
2,5
%
Cross modulation (note 2)
α
−
0,1
0,25
%
