FEATURES

DAVINCI

E PROCESSORS

− DC-Coupled Input

− No Output Capacitors Needed

(1) Internal circuitry avoids output saturation, even with 0V sync tip

level at the input video signal.

APPLICATIONS

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

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 (150

Ω). 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

< 1.5

µA, 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

PRODUCT

2.7V to 3.3V, 70MHz, 6mA IQ, 5µA Sleep, SC70

OPA358

2.7V to 3.3V, Filter, SAG, G = 2, 5

µA Sleep, SC70

OPA360

2.7V to 5.5V, 200MHz, 300V/

µs, 6µA Sleep, SOT23

OPA355

2.7V to 5.5V, 100MHz, 150V/

µs, 6µA Sleep, SOT23

OPA357

DAVINCI is a registered trademark of Texas Instruments. All other trademarks are the property of their respective owners.

OPA361

SBOS334A − SEPTEMBER 2005 − REVISED JANUARY 2006

3V VIDEO AMPLIFIER

with Internal Gain and Filter in SC70

www.ti.com

Copyright

 2005, Texas Instruments Incorporated

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.

2−Pole

Filter

Shutdown

Control

75

Ω

4k

Ω

(see note 1)

G = 5.2V/V

R

SET

+In

Enable

GND

Out

V+

OPA361

500

Ω

10mV

(1) Closed when enabled during normal operation; open when shut down.