TI TLS1215N

TLS1215
WIDE-BAND VIDEO PREAMPLIFIER SYSTEM WITH BLANKING
SLVS096A – OCTOBER 1995
•
•
•
•
•
•
Wide Bandwidth . . . Typ 100 MHz at – 3 dB
0-V to 4-V Digital Level-Contrast Control
Voltage Range
0-V to 4-V Digital Level-Gain Adjust Control
Voltage Range
Individual Gain Adjust for Video Amplifiers
Output-Stage Blanking
Fewer Peripheral Components Required
Than for Competitive Systems
description
N PACKAGE
(TOP VIEW)
CONTRAST CAP1
CONTRAST CAP2
VCC1
R VIDEO IN
R CLAMP CAP
G VIDEO IN
GND
G CLAMP CAP
B VIDEO IN
B CLAMP CAP
VCC1
CONTRAST
BLANK GATE
CLAMP GATE
1
28
2
27
3
26
4
25
5
24
6
23
7
22
8
21
9
20
10
19
R GAIN ADJUST
R CLAMP(+)
R VIDEO OUT
VCC1
GND
VCC2
VCC1
GND
G VIDEO OUT
G CLAMP(+)
G GAIN ADJUST
B VIDEO OUT
B CLAMP(+)
B GAIN ADJUST
The TLS1215 is a wide-band video preamplifier
11
18
system intended for high-resolution RGB
12
17
(red-green-blue) color monitors with blanking
13
16
control features. Each video amplifier (R, G, and
14
15
B) contains a gain set for adjusting maximum
system gain. The TLS1215 provides digital
level-operated contrast, brightness, and gain adjustment. 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. The TLS1215 also contains a
blanking circuit, which clamps the video output voltage during blanking period to as low as 0.2 V above ground.
The device operates from a 12-V supply. The TLS1215 is characterized for operation from 0°C to 70°C.
functional block diagram
R VIDEO IN
R CLAMP CAP
R GAIN ADJUST
4
23
A1
A2
26
5
G CLAMP CAP
G GAIN ADJUST
6
8
A2
20
18
B CLAMP CAP
B GAIN ADJUST
CONTRAST
CONTRAST CAP1
CONTRAST CAP2
CLAMP GATE
BLANK GATE
9
G VIDEO OUT
G CLAMP(+)
A1
10
A2
17
15
12
R CLAMP(+)
A1
19
B VIDEO IN
R VIDEO OUT
28
27
G VIDEO IN
VCC2
Contrast
16
1
2
14
13
3, 11, 22, 25
7, 21, 24
B VIDEO OUT
B CLAMP(+)
VCC1
GND
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.
Copyright  1995, Texas Instruments Incorporated
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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
TLS1215
WIDE-BAND VIDEO PREAMPLIFIER SYSTEM WITH BLANKING
SLVS096A – OCTOBER 1995
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.5 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to VCC
Video output current (per channel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 mA
Total power dissipation at (or below) 25°C free-air temperature (see Note 2) . . . . . . . . . . . . . . . . . . . . . 2.1 W
Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°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 VCC pins must be externally wired together to prevent internal damage during VCC power-on/off cycles.
2. For operation above 25°C free-air temperature, derate linearly to 1.5 W at the rate of 13 mW/°C.
recommended operating conditions
Supply voltage, VCC1 and VCC2
MIN
NOM
MAX
UNIT
10.8
12
13.2
V
2.4
5
V
High-level input voltage, CLAMP GATE, VIH
Clamp comparators off
Low-level input voltage, CLAMP GATE, VIL
Clamp comparators on
0
0.8
V
High-level input voltage, BLANK GATE, VIH
Blanking circuit inactive
2.4
5
V
Low-level input voltage, BLANK GATE, VIL
Blanking circuit active
0
0.8
V
0
70
°C
Operating free-air temperature, TA
electrical characteristics at 25°C operating free-air temperature range, CLAMP GATE = 0 V,
BLANK GATE = 4 V, CLAMP(+) = 2 V, CONTRAST = R, G, B GAIN ADJUST = 4 V,
VCC1 = VCC2 = 12 V (see Figure 2) (unless otherwise noted)
PARAMETER
ICC
Vref
II
IIL
IIH
ALT SYMBOL
Supply current
TEST CONDITIONS
Video input reference voltage
VCC1 + VCC2
Measure R, G, B VIDEO IN
Contrast, R, G, B gain adjust
input current
Measure CONTRAST and
B, G, R GAIN ADJUST
II
MIN
TYP
MAX
UNIT
78
90
100
mA
2.1
2.3
2.6
V
–1
– 2.5
µA
Clamp gate low input current
CLAMP GATE = 0 V
–1
– 2.5
µA
Clamp gate high input current
CLAMP GATE = 5 V
0.03
1
µA
Clamp capacitor charge current
Clamp capacitor discharge current
IK(chg)
IK(dschg)
R, G, B CLAMP CAP = 0 V
– 850
µA
R, G, B CLAMP CAP = 5 V
+ 850
µA
VOL
VOH
Low-level output voltage
R, G, B CLAMP CAP = 0 V
0.3
V
High-level output voltage
R, G, B CLAMP CAP = 5 V
7.8
V
VO(blanked)
VO(diff)
Blanked output voltage
Blanking circuit active
0.2
V
2
Output voltage difference
VOdiff
POST OFFICE BOX 655303
Between any two channels
• DALLAS, TEXAS 75265
± 0.5
± 50
mV
TLS1215
WIDE-BAND VIDEO PREAMPLIFIER SYSTEM WITH BLANKING
SLVS096A – OCTOBER 1995
operating characteristics at 25°C free-air temperature range, CLAMP GATE = 0 V,
BLANK GATE = 4 V, CLAMP(+) = 4 V, CONTRAST = R, G, B GAIN ADJUST = 4 V, fI = 10 kHz (unless
otherwise noted)
PARAMETER
ALT SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
AV(max)
Maximum voltage
amplification
AVMAX
CONTRAST = 4 V,
VI(PP) = 700 mV
7.8
V/ V
AV(mid)
Mid-range voltage
amplification
AVMID
CONTRAST = 2 V,
VI(PP) = 700 mV
2
V/ V
Contrast voltage for minimum amplification
VCONTRASTLOW
VI(PP) = 1 V,
See Note 3
1
V
Amplification match at
AV(max)
AVMAX(DIFF)
CONTRAST = 4 V, See Note 4
± 0.2
dB
Amplification match at
AV(mid)
AVMID(DIFF)
CONTRAST = 2 V, See Note 3
± 0.2
dB
Amplification match at
AV(low)
AVLOW(DIFF)
CONTRAST = VCONTRASTLOW,
See Notes 3 and 4
± 0.2
dB
THD
Total harmonic distortion
THD
1.0%
BW
Amplifier bandwidth
BW(– 3 dB)
CONTRAST = 1 V, VI(PP) = 1 V
CONTRAST = 4 V,
See Notes 5 and 7
Crosstalk attenuation
Pulse test
NOTES: 3.
4.
5.
6.
7.
ax
100
MHz
CONTRAST = 4 V, f = 10 kHz,
See Note 6
80
dB
CONTRAST = 4 V, f = 10 MHz,
See Notes 6 or 7
40
dB
Tr, video
Tf, video
VO(PP) = 4 V,
Clamp(+) = 2 V,
CONTRAST = 4 V,
See Notes 5 and 7
Tr, blank
Tf, blank
CONTRAST = 4 V , Clamp(+) = 2 V,
See Notes 5 and 7
4
ns
7
Determine VCONTRASTLOW for – 40 dB attenuation of output. Reference to AV maximum.
Measure gain difference between any two amplifiers, VI(PP) = 1 V.
Adjust input frequency from 10 kHz (AV maximum ref level) to the – 3 dB corner frequency (f – 3 dB). VI(PP) = 700 mV.
VI(PP) = 700 mV at f = 10 kHz to any amplifier. Measure output levels of the other two undriven amplifiers relative to driven amplifier.
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
TLS1215
WIDE-BAND VIDEO PREAMPLIFIER SYSTEM WITH BLANKING
SLVS096A – OCTOBER 1995
APPLICATION INFORMATION
4V
1 CONTRAST
CAP 1
R GAIN ADJUST
0.1 µF
2 CONTRAST
CAP 2
3
Red Video In
R CLAMP(+)
VCC1
R VIDEO OUT
4
5
10 µF
VCC1
R VIDEO IN
0.1 µF
6
GND
R CLAMP CAP
G VIDEO IN
VCC2
GND
VCC1
75 Ω
7
10 µF
8
Blue Video In
0.1 µF
To Red Cascode Driver
26
390 Ω
0.1 µF
0.1 µF
4V
27
0.1 µF
75 Ω
Green Video In
28
0.1 µF
9
GND
G CLAMP CAP
G VIDEO OUT
B VIDEO IN
25
0.1 µF
24
23
0.1 µF
22
0.1 µF
21
To Green Cascode Drive
20
75 Ω
4V
10
10 µF
G CLAMP(+)
B CLAMP CAP
0.1 µF
0.1 µF
11
VCC1
G GAIN ADJUST
4V
18
0.1 µF
4V
12
B VIDEO OUT
CONTRAST
To Blue Cascode Driver
17
0.1 µF
BLANK GATE
CLAMP GATE
4V
13
14
B CLAMP(+)
BLANK GATE
CLAMP GATE
B GAIN ADJUST
16
0.1 µF
4V
15
0.1 µF
12 V
Figure 1. Test /Application Circuit
Video
CLAMP GATE †
BLANK GATE
† Minimum CLAMP GATE pulse: 300 ns
Figure 2. Test/Application Circuit Timing Diagram
4
390 Ω
19
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
390 Ω
PACKAGE OPTION ADDENDUM
www.ti.com
30-Mar-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
TLS1215N
OBSOLETE
PDIP
N
Pins Package Eco Plan (2)
Qty
28
TBD
Lead/Ball Finish
Call TI
MSL Peak Temp (3)
Call TI
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
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Addendum-Page 1
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