March 1986 4
Philips Semiconductors Product specification
Video modulator circuit
TDA6800
TDA6800T
CHARACTERISTICS
V
P
=5V; 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
− 913 mA
Video input voltage V
8(p-p)
− 1 − V
Input impedance R
8
30 −− kΩ
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
=75Ω V
6-7
− 13 − mV
Output voltage f = 600 MHz; R
L
=75Ω 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 %
