Philips TDA6800T User Manual

March 1986

4

Philips Semiconductors

Product specification

Video modulator circuit

TDA6800

TDA6800T

V

P

= 5 V;  T

amb

= 25

°

C; measured in Fig.1; unless otherwise specified

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.

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

(see Fig.3)

Residual carrier voltage

V

r

−

−

2,5

%

Cross modulation (note 2)

α

−

0,1

0,25

%