
TL1051
VIDEO PREPROCESSOR CIRCUIT
SOCS032B – NOVEMBER 1991
Copyright
1991, Texas Instruments Incorporated
4-1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Solid-State Reliability
Supports Both Color and Monochrome
Applications
Three Independent Channels Available for
Use With RGB Monitors
Y Signal Generated From Three
Independent Channels
Clamp Pulse-Select Option
White-Clip Function for Y Signal
Gain Control for R, G, B, and Y
Noise Suppression During Video-Blanking
Periods
description
The TL1051 is a bipolar monolithic integrated circuit designed for use in preprocessing three channels of TI CCD
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.
The TL1051 is supplied in a 44-pin surface-mount plastic package and is characterized for operation from – 20
°C
to 45
°C.
AGCOUT
REF2V
AGCCONT
AGCLMT
BOUT
GOUT
ROUT
YOUT
YALC
WCPCONT
YCLAMP
12 13
1
2
3
4
5
6
7
8
9
10
11
NC
WB
CONTB
CONTA
VCC
BIN
GIN
RIN
CLPLVLB
CLPLVLG
CLPLVLR
14 15 16 17
FR PACKAGE
(TOP VIEW)
GND
ALCREF
AGCSET
AGCDET
43 42 41 40 39
44
38
RESET
ALCDR
V
ALC–
ALC+
GA
TE
GA
TEOUT
GA
TEIN
HL
YSW
Y
AGCIN
GND
SWR
SWG
SWB
PCL1
PBL
PCL2
36 35 34
37
18 19 20 21 22
Y
AGC
33
32
31
30
29
28
27
26
25
24
23
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,
Method 3015; however, precautions should be taken to avoid application of any voltage higher than maximum-rated voltages to these
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 VCC or ground.
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.
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.