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VIDEO PREAMPLIFIER SYSTEM
TLS1233
VIDEO PREAMPLIFIER SYSTEM
SLVS126C – JULY 1995 – REVISED JUNE 1996
Wide Bandwidth...Typ 100 MHz at – 3 dB
Three Channels
0 V to 4 V, Digital Level-Contrast Control
0 V to 4 V, Digital Level-Gain Adjust Control
20-Pin Plastic DIP for Small PCB Area
Required
Fewer Peripheral Components Required
Than for LM1203 Applications
Independent CLAMP(+) Adjustment to Each
Channel
N PACKAGE
(TOP VIEW)
R CLAMP(+)
V CC1
R VIDEO IN
R CLAMP CAP
G VIDEO IN
GND
G CLAMP CAP
B VIDEO IN
B CLAMP CAP
CONTRAST
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
G CLAMP(+)
B CLAMP(+)
R VIDEO OUT
R GAIN ADJUST
V CC2
G VIDEO OUT
G GAIN ADJUST
B VIDEO OUT
B GAIN ADJUS T
CLAMP GATE
description
The TLS1233 is a 100-MHz wide-band video preamplifier system intended for mid-to-high-resolution RGB
(red-green-blue) color monitors. Each video amplifier (R, G, and B) contains a gain set for adjusting maximum
system gain (A V = 7.8 V/V). The TLS1233 provides digital level-operated contrast, brightness, and gain
adjustment control. All the control inputs offer high input impedance and an operation range from 0 V to 4 V for
easy interface to the serial digital buses. Provided in a 20-pin plastic dual-in-line package (DIP), the TLS1233
integrates most of the external components required to accommodate the video system.
The TLS1233 operates from a 12-V supply and contains an internal input bias voltage. Also, the TLS1233
contains the feedback resistor required between output and CLAMP(–) for dc level holding. The device is
characterized for operation from 0
°
C to 70
°
C.
functional block diagram
3
4
17
16
V CC2
R VIDEO IN
R CLAMP CAP
R GAIN ADJUST
A1
A2
18
R VIDEO OUT
1
R CLAMP(+)
G VIDEO IN
G CLAMP CAP
G GAIN ADJUST
5
7
14
A1
A2
15
G VIDEO OUT
20
G CLAMP(+)
B VIDEO IN
B CLAMP CAP
B GAIN ADJUST
8
9
12
A1
A2
13
B VIDEO OUT
10
Contrast
Control
19
B CLAMP(+)
CONTRAST
CLAMP GATE
11
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright W 1996, Texas Instruments Incorporated
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
1
•
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TLS1233
VIDEO PREAMPLIFIER SYSTEM
SLVS126C – JULY 1995 – REVISED JUNE 1996
TLS1233Y chip information
This chip, when properly assembled, displays characteristics similar to the TLS1233. Thermal compression or
ultrasonic bonding may be used on the doped-aluminum bonding pads. The chips may be mounted with
conductive epoxy or a gold-silicon preform.
BONDING PAD ASSIGNMENTS
3
2
1
20
19
18
4
17
5
76
16
6
6
15
7
14
CHIP THICKNESS: 15 TYPICAL
BONDING PADS: 4 × 4 MINIMUM
8
9
10
11
12
13
T J max = 150 ° C
TOLERANCES ARE ± 10%.
78
ALL DIMENSIONS ARE IN MILS.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted) †
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V I (see Note 1)
13.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Video output current, I O (per channel)
0 V to V CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28 mA
Total power dissipation at (or below) 25
C free-air temperature (see Note 2)
. . . . . . . . . . . . . . . . . . . .
1.87 W
Operating virtual junction temperature range, T J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55
°
C to 150
°
C
Operating free-air temperature range, T A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0
°
C to 70
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
–65
°
C to 150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All V CC terminals must be externally wired together to prevent internal damage during V CC power-on/-off cycles.
2. For operation above 25 ° C free-air temperature, derate linearly from 1.87 W (T A = 25 ° C) to 1.2 W (T A = 70 ° C). This equates to a
derating factor of 15 mW/ ° C.
260
°
C
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
Supply voltage, V CC
°
Storage temperature range, T stg
199644197.016.png
TLS1233
VIDEO PREAMPLIFIER SYSTEM
SLVS126C – JULY 1995 – REVISED JUNE 1996
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, V CC1 and V C C2
11
12
13
V
High-level input voltage range, CLAMP GATE , V IH
Clamp comparators off
2.4
5
V
Low-level input voltage range, CLAMP GATE, V IL
Clamp comparators on
0
0.8
V
Operating free-air temperature, T A
0
70
° C
electrical characteristics at 25 ° C free-air temperature range, CLAMP GATE = 0 V, CLAMP(+) = 2 V,
CONTRAST = R,G,B GAIN ADJUST = 4 V, V CC1 =V CC2 = 12 V (see Figure 2) (unless otherwise noted)
PARAMETER
ALTERNATE
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
I CC
Supply current
V CC1 + V CC2
84
94
mA
V ref
Video input reference voltage
Measure R/G/B video input
2.1
2.3
2.5
V
I I
Contrast and R,G,B GAIN ADJUST
input current
Measure CONTRAST,
R/G/B GAIN ADJUST
– 0.5
-10
m
I IL
Clamp gate low input current
CLAMP GATE = 0 V
– 0.5
– 2.4
m A
I IH
Clamp gate high input current
CLAMP GATE = 12 V
0.005
1
m A
Clamp capacitor charge current
I K(chg)
R,G,B CLAMP CAP = 0 V
1
mA
Clamp capacitor discharge current
I K(dschg)
R,G,B CLAMP CAP = 5 V
–1
mA
V OL
Low-level output voltage
R,G,B CLAMP CAP = 0 V
0.3
V
V OH
High-level output voltage
R,G,B CLAMP CAP = 5 V
7.8
V
V O(diff)
Output voltage difference
V O(diff)
Between any two channels
± 0.5
± 50
mV
operating characteristics at 25 ° C free-air temperature, CLAMP GATE = 0 V, CLAMP(+) = 4 V,
CONTRAST = R,G,B GAIN ADJUST = 4 V, f I = 10 kHz, V CC1 = V CC2 = 12 V (unless otherwise noted)
PARAMETER
ALTERNATE
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
A V(max) Maximum voltage amplification
A VMAX
CONTRAST = 4 V, V IPP = 700 mV
7.8
V/V
A V(mid) Midrange voltage amplification
A VMID
CONTRAST = 2 V, V IPP = 700 mV
2
V/V
Contrast voltage for minimum
amplification
V CONT-LOW V I(PP) = 1 V,
See Note 3
1
V
Amplification match at A V(max) A Vmax(diff)
CONTRAST = 4 V, See Note 4
±
0.2
dB
Amplification match at A V(mid)
A Vmid(diff)
CONTRAST = 2 V, See Note 3
± 0.2
dB
Amplification match at A V(low)
A Vlow(diff)
CONTRAST = V CONT-LOW ,
See Note 3 and 4
± 0.2
dB
THD
Total harmonic distortion
CONTRAST = 1 V, V IPP = 1 V
0.5
%
BW
Amplifier bandwidth
BW(–3 dB)
CONTRAST = 4 V,
See Notes 5 And 7
100
MHz
CONTRAST = 4 V,
See Note 6
f = 10 kHz,
60
dB
Crosstalk attenuation
a x
CONTRAST = 4 V,
f = 10 MHz,
See Notes 6 or 7
40
dB
Pulse test for rise time
t r
CONTRAST = 4 V, CLAMP(+) = 2 V,
3
ns
Pulse test for fall time
t f
V O(PP) = 4 V
()
See Notes 5 and 7
4
ns
NOTES: 3. Determine V CONT-LOW for –40 dB attenuation of output. Reference to A V(max) .
4. Measure gain difference between any two amplifiers, V I(PP) = 1 V.
5. Adjust input frequency from 10 kHz (A V(max) reference level) to the – 3-dB corner frequency (f – 3 dB). V I(PP) = 700 mV.
6. V I(PP) = 700 mV at f = 10 kHz to any amplifier. Measure output levels of the other two undriven amplifiers relative to driven amplifier.
7. A special text fixture without a socket and a double-sided full-ground-plane PC board are required.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
A
Crosstalk attenuation
a
199644197.001.png 199644197.002.png 199644197.003.png
TLS1233
VIDEO PREAMPLIFIER SYSTEM
SLVS126C – JULY 1995 – REVISED JUNE 1996
PARAMETER MEASUREMENT INFORMATION
CLAMP(+)
1
R CLAMP(+)
G CLAMP(+)
20
0.1
m
F
12 V
2
V CC1
B CLAMP(+)
19
+
10 m F
0.1 m F
0.1 m F
R Video In
+
3
R VIDEO IN
R VIDEO OUT
18
To Red
Cascade Driver
75
W
10
m
F
390 W
4
R CLAMP CAP R GAIN ADJUST
17
0 V to 4 V
0.1 m F
0.1 m F
0.1 m F
G Video In
5
G VIDEO IN
V CC2
16
12 V
+
+
75
W
10 m F
0.1
m
F
10 m F
6
GND
G VIDEO OUT
15
To Green
Cascade Driver
390 W
7
G CLAMP CAP G GAIN ADJUST
14
0 V to 4 V
0.1
m
F
0.1
m
F
0.1
m
F
B Video In
8
B VIDEO IN
B VIDEO OUT
13
To Blue
Cascade Driver
+
75
W
10
m
F
390
W
9
B CLAMP CAP B GAIN ADJUST
12
0 V to 4 V
0.1 m F
0.1 m F
CONTRAST
10
CONTRAST
CLAMP GATE
11
CLAMP GATE
0.1 m F
Figure 1. Test Circuit
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
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TLS1233
VIDEO PREAMPLIFIER SYSTEM
SLVS126C – JULY 1995 – REVISED JUNE 1996
APPLICATION INFORMATION
4 V
4 V
1
R CLAMP (+)
G CLAMP(+)
20
0.1 m F
4 V
12 V
2
V CC1
B CLAMP(+)
19
+
10 m F
0.1 m F
0.1 m F
R Video In
3
R VIDEO IN
R VIDEO OUT
18
To Red
Cascade Driver
+
75 W
10 m F
390 W
4 V
4
R CLAMP CAP R GAIN ADJUST
17
0.1 m F
0.1 m F
0.1 m F
G Video In
5
G VIDEO IN
V CC2
16
12 V
+
+
75 W
10
m
F
0.1 m F
10
m
F
6
GND
G VIDEO OUT
15
To Green
Cascade Driver
390
W
4 V
7
G CLAMP CAP G GAIN ADJUST
14
0.1
m
F
0.1
m
F
0.1
m
F
B Video In
8
B VIDEO IN
B VIDEO OUT
13
To Blue
Cascade Driver
+
75
W
10 m F
390
W
4 V
9
B CLAMP CAP B GAIN ADJUST
12
0.1
m
F
0.1
m
F
4 V
CONTRAST
10
CONTRAST
CLAMP GATE
11
CLAMP GATE
0.1 m F
100 W
100 W
†
† Minimum pulse width: 300 ns
Figure 2. Application Circuit
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
5
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