TDA4884 Datasheet, PDF (14/28 Pages) NXP Semiconductors – Advanced monitor video controller for OSD

Philips Semiconductors
Three gain control video pre-amplifier for OSD
Product specification
TDA4884
handbo¹o⁴k,⁰h⁰alfpage
signal
amplitude
(mV)
1000
800
600
400
200
0
−200
0
2
0.7
4
4.3
MHA819
4
(dB)
3
2
1
0
−1
−3
−5
−10
−20
−40
6
8
Vi(CC) (V)
handbo¹o²k,⁰h⁰alfpage
signal
amplitude
(mV)
800
400
0
0
2
4
3.75
MHA821
3
(dB)
2
1
0
−1
−2
−3
−4
−5
−6
−8
6
8
Vi(GC) (V)
Fig.5 Typical contrast characteristic.
Fig.6 Typical gain characteristic.
handbook, full pagewidth
1997 Nov 26
OSD pulse
at pin 6
(V)
4.3
tf(CC)
0.7
output signal
at pins 19, 16 and 13
(V)
tdf(C)
Vbl + Vo(b-w) = 1.5
Vo(b-w)
Vbl = 0.7
tf(C)
tr(CC)
tdr(C)
90%
50%
10%
t
tr(C)
90%
50%
10%
t
MHA820
Fig.7 Typical OSD fast blanking input/output waveforms.
14