TL1051FR [TI]

VIDEO PREPROCESSOR CIRCUIT; 视频预处理电路
TL1051FR
型号: TL1051FR
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

VIDEO PREPROCESSOR CIRCUIT
视频预处理电路

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TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
Solid-State Reliability  
Clamp Pulse-Select Option  
Supports Both Color and Monochrome  
Applications  
White-Clip Function for Y Signal  
Gain Control for R, G, B, and Y  
Three Independent Channels Available for  
Use With RGB Monitors  
Noise Suppression During Video-Blanking  
Periods  
Y Signal Generated From Three  
Independent Channels  
description  
TheTL1051isabipolarmonolithicintegratedcircuitdesignedforuseinpreprocessingthreechannelsofTICCD  
image sensors. It receives video inputs from the TI TL1593 three-channel sample-and-hold circuit and outputs  
three processed channel signals and a single multiplexed Y (luminance) signal. Processing functions of the  
TL1051 include gain, automatic gain control, clamp, white balance, and white clip.  
TheTL1051issuppliedina44-pinsurface-mountplasticpackageandischaracterizedforoperationfrom20°C  
to 45°C.  
FR PACKAGE  
(TOP VIEW)  
44 43 42 41 40 39 38 37 36 35 34  
AGCOUT  
REF2V  
AGCCONT  
AGCLMT  
BOUT  
GOUT  
ROUT  
YOUT  
YALC  
NC  
WB  
CONTB  
CONTA  
1
2
3
4
5
6
7
8
9
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
V
CC  
BIN  
GIN  
RIN  
CLPLVLB  
CLPLVLG 10  
CLPLVLR 11  
WCPCONT  
YCLAMP  
12 13 14 15 16 17 18 19 20 21 22  
NC – No internal connection  
This device contains circuits to protect its inputs and outputs against damage due to high static voltages or electrostatic fields. These  
circuits have been qualified to protect this device against electrostatic discharges (ESD) of up to 2 kV according to MIL-STD-883C,  
Method3015;however, precautionsshouldbetakentoavoidapplicationofanyvoltagehigherthanmaximum-ratedvoltagestothese  
high-impedance circuits. During storage or handling, the device leads should be shorted together or the device should be placed in  
conductive foam. In a circuit, unused inputs should always be connected to an appropriate logic voltage level, preferably either V  
Specific guidelines for handling devices of this type are contained in the publication Guidelines for Handling Electrostatic-Discharge-Sensitive  
(ESDS) Devices and Assemblies available from Texas Instruments.  
or ground.  
CC  
Copyright 1991, 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.  
4-1  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
functional block diagram  
41  
42  
+
43  
39  
ALC  
ALC  
AMP  
ALCDRV  
ALC –  
Reset  
Gate  
44  
RESET  
40  
38  
GATEOUT  
AGCOUT  
HL  
GATE  
GATE IN  
34  
33  
19  
AGCDET  
AGCSET  
CONTA  
AGC  
AMP  
35  
4
3
HLMIX  
3
CONTB  
AGCLMT  
30  
31  
AGC  
CONT  
AGCCONT  
2
WB  
A/D  
18  
23  
PCL2  
Y
Clamp  
YCLAMP  
26  
22  
WCP-  
CONT  
YOUT  
YAGC  
24  
21  
WCPCONT  
YAGCIN  
YAGC  
3
6
9
BIN  
Blue  
Clamp  
Blue  
Blank  
White  
Level  
CLPLVLB  
29  
28  
Blue  
AGC  
BOUT  
GOUT  
2
1
7
GIN  
Green  
Clamp  
Green  
Blank  
10  
CLPLVLG  
Green  
AGC  
8
White  
Level  
RIN  
Red  
Clamp  
Red  
Blank  
11  
CLPLVLR  
27  
25  
36  
Red  
AGC  
ROUT  
YALC  
3
3
ALC  
REF  
ALCREF  
Clamp  
Buffer  
16  
17  
PCL1  
PBL  
Blank  
Buffer  
13  
14  
15  
20  
SWR  
SWG  
SWB  
YSW  
YSW  
4-2  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
Terminal Functions  
TERMINAL  
I/O  
DESCRIPTION  
NAME  
NO.  
31  
34  
30  
33  
35  
43  
36  
41  
42  
6
AGCCONT  
AGCDET  
AGCLMT  
AGCOUT  
AGCSET  
ALCDRV  
ALCREF  
ALC+  
I
I
AGC control  
AGC detect  
AGC limit  
I
O
I
AGC out  
AGC set  
O
O
I
ALC drive  
ALC reference  
ALC noninverting input  
ALC inverting input  
Blue channel in  
ALC–  
I
BIN  
I
BOUT  
29  
9
O
I
Blue channel out  
CLPLVLB  
CLPLVLG  
CLPLVLR  
CONTA  
CONTB  
GATE  
DC clamp level – blue  
DC clamp level – green  
DC clamp level – red  
White balance digital control – A  
White balance digital control – B  
Video gate control switch  
Video gate in  
10  
11  
4
I
I
I
3
I
40  
38  
39  
7
I
GATEIN  
GATEOUT  
GIN  
I
O
I
Video gate out  
Green channel in  
Ground  
GND  
12, 37  
28  
19  
1
GOUT  
HL  
O
O
Green channel out  
Highlight suppression (not used)  
No internal connection  
Process blanking  
Clamp signal 1  
NC  
PBL  
17  
16  
18  
32  
44  
8
I
I
PCL1  
PCL2  
I
Clamp signal 2  
REF2V  
RESET  
RIN  
O
I
2-V reference  
Reset  
I
Red channel in  
ROUT  
SWB  
27  
15  
14  
13  
5
O
I
Red channel out  
Multiplex switch – blue  
Multiplex switch – green  
Multiplex switch – red  
Power supply voltage  
White balance analog control  
White clip control  
YAGC out  
SWG  
I
SWR  
I
V
CC  
WB  
2
I
I
WCPCONT  
YAGC  
24  
22  
21  
25  
23  
26  
20  
O
I
YAGCIN  
YALC  
Y AGC in  
O
I
Y automatic level control  
Y clamp  
YCLAMP  
YOUT  
O
O
Y signal out  
YSW  
Multiplexed Y out  
4-3  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
detailed description  
white-balance control  
White balance in the monochrome mode can be adjusted with either terminal 2 (white-balance analog control)  
or with terminals 3 and 4 (white-balance digital controls B and A, respectively). If analog control is selected,  
terminals 3 and 4 should be left open and terminal 2 adjusted appropriately (see Figure 1 and Figure 2 forcontrol  
characteristics). The white balance is controlled per the following table:  
CONTB  
CONTA  
VOLTAGE LEVEL ON WB  
RED  
–3 dB  
–1 dB  
1 dB  
BLUE  
–4 dB  
–1.5 dB  
1.5 dB  
4 dB  
L
L
L
H
L
2.4 V  
2.7 V  
3 V  
H
H
H
3.5 V  
3 dB  
analog inputs RIN, GIN, BIN  
The TI TL1593 sample-and-hold circuit is normally the source for these inputs. The source signals should be  
ac coupled into the TL1051. Gain control should be used on at least two of the three channels in order to obtain  
an optimum balance.  
clamp level  
Input terminals 9, 10, and 11 (CLPLVLB, CLPLVLG, and CLPLVLR, respectively) should initially be set at  
approximately 2 V dc. The levels should then be balanced so that clock feedthrough on terminal 20 (YSW) is  
minimized under dark conditions.  
multiplexed switching  
Input terminals 13, 14, and 15 (SWR, SWG, and SWB, respectively) are the TTL-level signals used to multiplex  
the three channels.  
clamping and process blanking  
Input terminals 16, 17, and 18 (PCL1, PBL, and PCL2) are used for TTL clamp and blank signals. The dark  
references are clamped by the PCL1 signal. Unwanted noise in the video signal is eliminated by the PBL signal.  
The Y signal can then be reclamped with the PCL2 signal.  
Depending on the application, gain and automatic gain control (AGC) may or may not be selected. The following  
descriptions cover both selections.  
YSW  
YSW output (terminal 20): Fast sampling of the video input signals with the TTL multiplex signals generates this  
high-bandwidth output without adjustable gain or AGC.  
gain and AGC selected  
YAGCINinput(terminal21):IfgainorAGCoperationisselected, theYSWoutput(terminal20)shouldbedirectly  
connected to YAGCIN.  
YAGC output (terminal 22): The multiplexed signal with controllable gain (controlled by the AGCCONT input)  
is available at this terminal if terminals 20 (YSW) and 21 (YAGCIN) are connected. If further signal processing  
is desired, this terminal should be ac coupled to terminal 23 (YCLAMP).  
YCLAMP input (terminal 23): The Y signal from YAGC can be reclamped at this point by applying a wider clamp  
pulse to terminal 18 (PCL2).  
WCPCONT input (terminal 24): A dc voltage applied to this white clip control input causes the white clip function  
to be performed on the Y signal. See Figure 4 for the clip control characteristics.  
YALC output (terminal 25): If either AGC or automatic level control (ALC) is selected, the Y signal at this point  
should be fed back to either the ALC or AGC block.  
YOUT output (terminal 26): The white-clipped Y signal is available at this output.  
4-4  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
analog output channels  
Terminals 27, 28, and 29 (ROUT, GOUT, and BOUT) are the individual analog output signals used in RGB color  
applications. Their gain can be affected by the control voltage applied to terminal 31 (AGCCONT).  
AGC section  
The AGC amplifier is a high-gain amplifier that requires an appropriate feedback network.  
AGCLMT input (terminal 30): A dc voltage applied to this terminal limits the amount of gain for R, G, B, and Y.  
AGCCONT input (terminal 31): A dc voltage applied to this terminal sets the gain (see Figure 3). It is also  
possible to build a feedback network and obtain AGC action. In this case, the video signal is fed back through  
AGCCONT.  
REF2V output (terminal 32): This terminal provides a 2-V reference output.  
AGCOUT output (terminal 33): This is the output from the AGC block.  
AGCDET input (terminal 34): Video from terminal 26 (YOUT) can be applied to this node to obtain feedback  
action.  
AGCSET input (terminal 35): A dc voltage applied to this terminal sets the gain for AGC action.  
gate section  
GATEIN input (terminal 38): If a gating function is desired, video from the YOUT output (terminal 26) can be  
applied to this terminal.  
GATEOUToutput(terminal39):VideoispassedfromGATEINtoGATEOUTifGATE(terminal40)islow. IfGATE  
is high, GATEOUT is in the high-impedance state.  
GATE input (terminal 40): A TTL signal can be applied to this input to control the active video (see the description  
of the GATEOUT terminal above).  
ALC section  
An amplifier similar to that in the AGC section is available for use as an integrator. If used, a capacitor should  
be connected from the ALC-input (terminal 42) to the ALCDRV output (terminal 43). A reset switch is available  
at the RESET input (terminal 44). The ALC amplifier is a high-gain amplifier requiring an appropriate feedback  
network.  
4-5  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)  
Supply voltage, V  
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V  
CC  
Input voltage range, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V  
Operating free-air temperature range, T  
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25°C to 75°C  
A
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 125°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.  
NOTE 1: All voltage values are with respect to the GND terminal.  
recommended operating conditions  
MIN NOM  
MAX  
UNIT  
V
Supply voltage, V  
4.8  
5
250  
3.05  
2
5.2  
CC  
RIN, GIN, BIN  
mV  
WB  
0
5
5
Input voltage, V  
CLPLVLR, CLPLVLG, CLPLVLB  
WCPCONT, AGCLMT, AGCCONT  
AGCDET, AGCSET  
I
V
0
3
3
High-level input voltage, V  
CONTA, CONTB, SWR, SWG, SWB, PCL1,  
PCL2, PBL, RESET  
3.5  
20  
V
V
IH  
Low-level input voltage, V  
IL  
Operating free-air temperature, T  
0.4  
45  
°C  
A
electrical characteristics over recommended operating free-air temperature range (unless  
otherwise noted)  
all sections  
PARAMETER  
TEST CONDITIONS  
= 5 V  
MIN TYP  
MAX  
UNIT  
I
Supply current  
V
40  
50  
mA  
CC  
CC  
Y-switch section  
PARAMETER  
TEST CONDITIONS  
MIN TYP  
MAX  
UNIT  
White-clip level (see Note 2)  
Gate-pulse impedance  
Gate-pulse capacitance  
400%  
SWB, SWG,  
SWR  
5
k  
10  
pF  
clamp section  
PARAMETER  
TEST CONDITIONS  
MIN TYP  
MAX  
UNIT  
mA  
Clamp-pulse current  
Clamp resistance  
PCL1  
0.2  
0.2  
BIN, GIN, RIN  
PCL1  
PCL1 = 1 µs  
30  
Clamp-pulse input capacitance  
Noise rejection  
30  
pF  
PCL1 to YSW  
30  
dB  
All typical values are at T = 25° C.  
A
NOTE 2: 250 mV = 100%.  
4-6  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
electrical characteristics over recommended operating free-air temperature range (unless  
otherwise noted) (continued)  
blanking section  
PARAMETER  
TEST CONDITIONS  
MIN  
MAX  
0.2  
UNIT  
mA  
pF  
Blanking-pulse current  
PBL  
0.2  
Blanking-pulse input capacitance  
Noise rejection  
PBL  
30  
PBL to YSW  
30  
dB  
white-balance section  
PARAMETER  
TEST CONDITIONS  
MIN  
–10  
2.6  
MAX  
10  
UNIT  
Input current  
WB  
µA  
WB = 3.5 V  
WB = 3 V  
3.5  
0.5  
1.5  
Red channel gain  
RIN, WB to YSW  
dB  
dB  
WB = 2.7 V  
WB = 2.4 V  
WB = 3.5 V  
WB = 3 V  
–1.7  
–3.7  
4.4  
–1.9  
1
0.6  
2.7  
3.1  
0.8  
1.9  
Blue channel gain  
BIN, WB to YSW  
WB = 2.7 V  
WB = 2.4 V  
3.5  
4.5  
AGC section  
PARAMETER  
TEST CONDITIONS  
MIN TYP  
MAX  
0.5  
1
UNIT  
Gain delta between R, G, B channels  
0.5  
0
0
dB  
AGCCONT = 1.5 V  
–1  
Gain control  
dB  
dB  
AGCCONT = 4.5 V  
11.5  
12.5  
14.5  
0
RIN, GIN, BIN to ROUT,  
GOUT, BOUT, YAGC  
AGC limit 1  
AGC limit 2  
AGCLMT = 0  
AGCLMT = 5 V  
12.5  
2.9  
3
AGCCONT = 2.5 V (AGC on)  
AGCCONT = 0.5 V (AGC off)  
AGCCONT = 2.5 V (AGC on)  
AGCCONT = 0.5 V (AGC off)  
3.6  
5.1  
4.2  
6.2  
RIN, GIN, BIN to  
ROUT, GOUT, BOUT  
RGB bandwidth  
MHz  
3.4  
5
RIN, GIN, BIN to YAGC  
ROUT, GOUT, BOUT  
Output impedance  
150  
Y-clamp section  
PARAMETER  
TEST CONDITIONS  
MIN TYP  
MAX  
0.2  
UNIT  
mA  
Clamp pulse current  
Clamp pulse capacitance  
PCL2  
PCL2  
0.2  
50  
pF  
white-clip section  
PARAMETER  
White-clip point  
TEST CONDITIONS  
MIN TYP  
MAX  
UNIT  
See Note 3  
400%  
Knee point 1  
WCPCONT open,  
WCPCONT = 3 V,  
WCPCONT = 2 V,  
See Note 3  
See Note 3  
See Note 3  
118%  
176% 236%  
35%  
Knee point 2  
YCL to YOUT  
YOUT  
Knee point 3  
59%  
17.5  
100  
Knee compression ratio  
Output impedance  
13.5  
15.5  
dB  
All typical values are at T = 25° C.  
A
NOTE 3: 340 mV = 100%.  
4-7  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
electrical characteristics over recommended operating free-air temperature range (unless  
otherwise noted) (continued)  
ALC-clip section  
PARAMETER  
TEST CONDITIONS  
= 4.8 V to 5.2 V  
MIN TYP  
MAX  
UNIT  
V
ALCREF  
YALC  
V
2.6  
2.8  
340  
800  
3
CC  
V
O
Output voltage  
Clip level  
mV  
mV  
YALC  
Output impedance  
ALCREF, YALC  
100  
AGCDET section (see Note 4)  
PARAMETER  
TEST CONDITIONS  
MIN TYP  
MAX  
UNIT  
Gain  
AGCDET, AGCOUT  
60  
41%  
12%  
24%  
dB  
AGC setpoint 1  
AGC setpoint 2  
AGC setpoint 3  
AGCSET = 3.5 V  
AGCSET = 1.5 V  
AGCSET open  
AGCDET, AGCSET,  
AGCOUT  
ALC-amplifier section  
PARAMETER  
TEST CONDITIONS  
MIN TYP  
MAX  
UNIT  
V
Maximum output voltage  
Minimum output voltage  
Input offset voltage  
Input bias current  
Input current  
ALCDRV  
3.5  
ALCDRV  
0.5  
8
V
V
IO  
ALC+, ALC–  
ALC+, ALC–  
RESET  
–8  
0
mV  
nA  
mA  
dB  
I
I
200  
0.5  
IB  
0.5  
I
Gain  
ALC+, ALC, ALCDRV  
60  
All typical values are at T = 25° C.  
A
NOTE 4: The YAGC output is 100% when the YAGCIN input = 250 mV.  
operating characteristics over recommended operating temperature range (unless otherwise  
noted)  
Y-switch section  
PARAMETER  
Switching frequency, RIN, GIN, BIN to YSW  
RIN or BIN to YSW  
TEST CONDITIONS  
WB = 0 V to V  
MIN  
TYP  
10  
20  
10  
5
MAX  
UNIT  
8
MHz  
CC  
30  
20  
t
pd  
GIN to YSW  
ns  
SWR, SWG, or SWB to YSW  
SWR, SWG, SWB acquisition time  
YSW output settling time  
20  
ns  
ns  
30  
clamp section  
PARAMETER  
PARAMETER  
TEST CONDITIONS  
TEST CONDITIONS  
MIN  
MAX  
UNIT  
t
PCL1 to YSW  
100  
ns  
pd  
blanking section  
MIN  
MAX  
UNIT  
t
pd  
PBL to YSW  
150  
ns  
4-8  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
operating characteristics over recommended operating temperature range (unless otherwise  
noted) (continued)  
Y-clamp section  
PARAMETER  
TEST CONDITIONS  
MIN  
MAX  
UNIT  
t
pd  
PCL2 to YOUT  
500  
ns  
white-clip section  
PARAMETER  
Switching frequency, YCL to YOUT  
TEST CONDITIONS  
WCPCONT open  
MIN  
TYP  
MAX  
MAX  
UNIT  
6
8
MHz  
ALC-clip section  
PARAMETER  
TEST CONDITIONS  
MIN  
UNIT  
Switching frequency, YCL to YALC  
2
MHz  
4-9  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
TYPICAL CHARACTERISTICS  
RED-CHANNEL GAIN CHANGE  
vs  
BLUE-CHANNEL GAIN CHANGE  
vs  
WHITE-BALANCE CONTROL VOLTAGE  
WHITE-BALANCE CONTROL VOLTAGE  
4
2
4
2
0
0
–2  
–4  
–2  
–4  
0
2.5 2.6 2.7 2.8 2.9  
3
3.1 3.2  
5
0
2.5 2.6 2.7 2.8 2.9  
3
3.1 3.2  
5
White-Balance Control Voltage – V  
White-Balance Control Voltage – V  
Figure 1  
Figure 2  
AGC GAIN CHANGE  
vs  
Y-SIGNAL OUTPUT VOLTAGE  
vs  
AGC CONTROL VOLTAGE  
WHITE-CLIP CONTROL INPUT VOLTAGE  
18  
16  
14  
12  
10  
8
6
4
2
0
Knee  
Voltage  
0
1
2
3
4
5
WCPCONT Voltage – V  
AGC Control Voltage – V  
Figure 3  
Figure 4  
4-10  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
APPLICATION INFORMATION  
5 V  
C10  
0.1 µF  
Q1  
2N3904  
5 V  
R7  
100 Ω  
BOUT  
5 V  
C9  
0.1 µF  
R11  
1 kΩ  
R6  
10 kΩ  
C1  
0.1 µF  
5 V  
5 V  
R1  
22 kΩ  
44 43 42 41 40 39 38 37 36 35 34  
C11  
0.1 µF  
C2  
0.1 µF  
R2  
33 kΩ  
Q2  
2N3904  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
1
2
AGCOUT  
REF2V  
NC  
5 V  
R8  
100 Ω  
WB  
GOUT  
3
CONTB  
CONTA  
AGCCONT  
AGCLMT  
BOUT  
C3  
0.1 µF  
4
R12  
1 kΩ  
5
V
CC  
TL1051  
Video  
Preprocessor  
6
C4 0.1 µF  
C5 0.1 µF  
C6 0.1 µF  
BIN  
GOUT  
5 V  
7
GIN  
ROUT  
8
RIN  
YOUT  
C12  
0.1 µF  
9
5 V  
CLPLVLB  
CLPLVLG  
CLPLVLR  
YALC  
10  
11  
WCPCONT  
YCLAMP  
Q3  
2N390  
4
C7  
0.1 µF  
R9  
100 Ω  
ROUT  
R13  
1 kΩ  
12 13 14 15 16 17 18 19 20 21 22  
R3  
R4  
R5  
10 k10 k10 kΩ  
5 V  
C8  
0.1 µF  
GT1  
GT2  
C13  
0.1 µF  
From Timing  
Generator  
(see Note A)  
GT3  
BCP1  
CP2  
Q4  
2N3904  
BCP2  
R10  
100 Ω  
YOUT  
R14  
1 kΩ  
NOTE A: This application circuit shows TTL signals originating from the TI SN28835 1/2-Inch NTSC Timer. However, the TL1051 video  
preprocessor interfaces equally well with a TI TMS3471C 2/3-Inch NTSC timer, a TI SN28837 1/2-Inch PAL timer, or a user-defined  
timing generator.  
Figure 5. Typical Application Circuit  
4-11  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
TL1051  
VIDEO PREPROCESSOR CIRCUIT  
SOCS032B – NOVEMBER 1991  
MECHANICAL DATA  
FR/S-PDFP-G44  
PLASTIC QUAD FLATPACK  
33  
23  
0,80 TYP  
34  
22  
0,40  
0,20  
44  
12  
0,20  
0,10  
1
11  
8,00 TYP  
10,20  
SQ  
9,80  
12,80  
SQ  
12,00  
0,10 MIN  
Seating Plane  
0°10°  
0,80  
0,30  
2,25 MAX  
0,10  
4040159/A–10/93  
NOTES: A. All linear dimensions are in millimeters.  
B. This drawing is subject to change without notice.  
4-12  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
IMPORTANT NOTICE  
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue  
any product or service without notice, and advise customers to obtain the latest version of relevant information  
to verify, before placing orders, that information being relied on is current and complete. All products are sold  
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those  
pertaining to warranty, patent infringement, and limitation of liability.  
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in  
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent  
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily  
performed, except those mandated by government requirements.  
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF  
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL  
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR  
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER  
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO  
BE FULLY AT THE CUSTOMER’S RISK.  
In order to minimize risks associated with the customer’s applications, adequate design and operating  
safeguards must be provided by the customer to minimize inherent or procedural hazards.  
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent  
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other  
intellectual property right of TI covering or relating to any combination, machine, or process in which such  
semiconductor products or services might be or are used. TI’s publication of information regarding any third  
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.  
Copyright 1998, Texas Instruments Incorporated  

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