
I
2
C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS S1D2518X01
11
Preliminary
AC ELECTRICAL CHARACTERISTICS
Ta
= 25
°
C, V
CC1
= V
CC2
= V
CC3
=12V, V
DD
= 5V; Pin1, 2, 3, 4 = 0V; Pin5, 8, 10 = S1; Pin21 = 4V; Pin20 = S8;
Pin30 = 0V; POR.
Vin = 0.56Vpp manually adjust video output pins 23, 26 and 28 to 4V DC for the AC test
(see 11)
unless otherwise
stated
(see 12)
Table 7. AC Electrical Characteristics
Parameter
Symbol
f -3dB
Conditions
Min
150
Typ
Max
-
Unit
MHz
Video bandwidth
(see 7,8)
P
5, 8, 10
= S2, 00, 02, 03, 04 = FFH
When P
20
= 0V, you must measure clamp cap
pin voltage.
Then P
20
= 4V, P
8
= 2.2V, clamp cap pin =
above measurement voltage.
P
20
= S8 (low: 0.5V, high: 3V) 00, 02, 03, 04 =
FFH
AVmax = 20log (Vout / Vin)
AVmax =20log (Voutch1 / Vontch2)
P
20
= S8 (low: 0.5V, high: 3V), 00 = 40H, 02, 03,
04 = FFH
AVlow = 20log (Voutch1 / Voutch2)
AVDmax = 20log (Vout [02, 03, 04: 80H]/ Vout
[02, 03, 04: FFH])
AVDmin = 20log (Vout [02, 03, 04: 00H]/ Vout
[02, 03, 04: 80H])
AVCmax = 20log (Vout [02, 03, 04: 80H]/ Vout
[02, 03, 04: FFH])
AVCmin = 20log (Vout [00:00H] / Vout [00, 02,
03, 04: 80H])
00, 02, 03, 04 = FFH,
ABL = 20log
(Vlow [P12 = 0.5V] / Vmax [P12 = 5V])
P
5, 8, 10
= S5, P20 = 4V, P
22, 27, 29
= Var.
P
5, 8, 10
= S6, Pedestal Level = over 1V.
Decreasing the output load resistor makes the
rise/fall time faster.
P
20
= 0V, P
21
= S7
Video amp gain
AVmax
16
18
20
dB
Max. gain channel difference
AVmax
(see 6,7)
-
-
1
dB
Low gain channel difference
AVlow
(see 6,7)
-
-
1
dB
Sub drive ctrl max-center
AVDmax
-6
-4
-2
dB
Sub drive ctrl min-center
AVDmin
-10.5
-7.5
-4.5
dB
Contrast ctrl max-center
AVCmax
-6.5
-4.5
-2.5
dB
Contrast ctrl min-center
AVCmin
-
-
-35
dB
ABL control range
ABL
-13
-10
-7
dB
Video amp THD
THD
-
1
5
%
Video rising time
(see 7)
tr
-
-
2.7
nS
Video falling time
(see 7)
tf
-
-
2.7
nS
Blank output rising time
(see 7)
trBlank
-
-
10
nS
Blank output falling time
(see 7)
Blank rising prop. delay
Blank falling prop. delay
Video output channel crosstalk
10kHz
Video output channel crosstalk
10MHz
tfBlank
-
-
10
nS
trBlankPr
tfBlankPr
CT_10K
(see 9)
CT_10M
(see 7,9)
-
-
-
25
15
-
35
25
-45
nS
nS
dB
P
5
= S3, P
20
= 4V, 00, 02, 03, 04: FFH
When P
20
= 0V, you must measure clamp cap
pin voltage.
Then P
20
= 4V, video input pin = 2.2V DC bias,
clamp cap pin = above measurement voltage
CT-10K = 20log (Voutch2 / Voutch2 [AVmax
Vout])
-
-
-35
dB