OPA361AIDCKT Datasheet, PDF (1/17 Pages) Texas Instruments – 3V VIDEO AMPLIFIER with Internal Gain and Filter in SC70

OPA361
SBOS334A − SEPTEMBER 2005 − REVISED JANUARY 2006
3V VIDEO AMPLIFIER
with Internal Gain and Filter in SC70
FEATURES
D EXCELLENT VIDEO PERFORMANCE
D INTERNAL GAIN: 5.2V/V
D SUPPORTS TV-DETECTION
D COMPATIBLE WITH OMAP242x and
DAVINCIE PROCESSORS
D 2-POLE RECONSTRUCTION FILTER
D INPUT RANGE INCLUDES GROUND
− DC-Coupled Input
D INTEGRATED LEVEL SHIFTER
− DC-Coupled Output⁽¹⁾
− No Output Capacitors Needed
D RAIL-TO-RAIL OUTPUT
D LOW QUIESCENT CURRENT: 5.3mA
D SHUTDOWN CURRENT: 1.5mA
D SINGLE-SUPPLY: 2.5V to 3.3V
D SC70-6 PACKAGE: 2.0mm x 2.1mm
D RoHS COMPLIANT
(1) _{Internal circuitry avoids output saturation, even with 0V sync tip}
level at the input video signal.
APPLICATIONS
D CAMERA PHONES
V+
OPA361
10mV
+In
2−Pole
Filter
500Ω
75Ω
Out
R_SET
Enable
4kΩ
Shutdown
Control
G = 5.2V/V
(see note 1)
DESCRIPTION
The OPA361 high-speed amplifier is optimized for 3V
portable video applications. It is specifically designed to be
compatible with the video encoders embedded in Texas
Instruments’ OMAP2420 and DaVinci processors or other
application processors with 0.5V_PP video output. The input
common-mode range includes GND, which allows a
video-DAC (digital-to-analog converter) to be DC-coupled
to the OPA361. The TV-detection feature simplifies the
end-user interface significantly by facilitating the
automatic start/stop of video transmission.
The output swings within 5mV of GND and 250mV to V+
with a standard back-terminated video load (150Ω). An
internal level shift circuit prevents the output from
saturating with 0V input, thus preventing sync-pulse
clipping in common video circuits. Therefore, the OPA361
is ideally suited for DC-coupling to the video load.
The OPA361 has been optimized for space-sensitive
applications by integrating internal gain setting resistors
(G = 5.2V/V) and a 2-pole video-DAC reconstruction filter.
In shutdown mode, the quiescent current is reduced to
< 1.5µA, dramatically reducing power consumption and
prolonging battery life.
The OPA361 is available in the tiny 2mm x 2.1mm SC70-6
package.
RELATED LOW VOLTAGE VIDEO AMPS
FEATURES
2.7V to 3.3V, 70MHz, 6mA IQ, 5µA Sleep, SC70
2.7V to 3.3V, Filter, SAG, G = 2, 5µA Sleep, SC70
2.7V to 5.5V, 200MHz, 300V/µs, 6µA Sleep, SOT23
2.7V to 5.5V, 100MHz, 150V/µs, 6µA Sleep, SOT23
PRODUCT
OPA358
OPA360
OPA355
OPA357
GND
(1) Closed when enabled during normal operation; open when shut down.
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.
DAVINCI is a registered trademark of Texas Instruments. All other trademarks are the property of their respective owners.
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  2005, Texas Instruments Incorporated
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