BurrBrown Products

from Texas Instruments

FEATURES

DESCRIPTION

APPLICATIONS

75W

75W

75W

75W

RGB

Channel0

75W

75W

75W

RGB

Channel1

75W

75W

RGB

Out

+5V

-5V

EN

Channel

Select

OPA3875

(Patented)

RGBSwitching

OPA3875

SBOS341B – DECEMBER 2006 – REVISED DECEMBER 2006

Triple 2:1 High-Speed Video Multiplexer

• 700MHz SMALL-SIGNAL BANDWIDTH

The OPA3875 offers a very wideband, 3-channel, 2:1

multiplexer in a small SSOP-16 package. Using only

11mA/ch, the OPA3875 provides three, gain of +2,

• 425MHz, 4V

video amplifier channels with > 400MHz large-signal

• 0.1dB GAIN FLATNESS to 150MHz

• 4ns CHANNEL SWITCHING TIME

are improved over earlier solutions using a new

(patented) input stage switching approach. This

• LOW SWITCHING GLITCH: 40mV

PP

technique uses current steering as the input switch

• 3100V/µs SLEW RATE

while maintaining an overall closed-loop design. Gain

• 0.025%/0.025° DIFFERENTIAL GAIN, PHASE

matching between each of the 3-channel pairs is

also significantly improved using this technique

• HIGH GAIN ACCURACY: 2.0V/V ±0.4%

(<0.2% gain mismatch). With >700MHz small-signal

bandwidth at a gain of 2, the OPA3875 gives a

typical 0.1dB gain flatness to > 150MHz.

• RGB SWITCHING

System power may be reduced using the chip enable

• LCD PROJECTOR INPUT SELECT

feature for the OPA3875. Taking the chip enable line

• WORKSTATION GRAPHICS

high powers down the OPA3875 to <900

µA total

• TRIPLE ADC INPUT MUX

supply current. Muxing multiple OPA3875 outputs

• DROP-IN UPGRADE TO LT1675

together, then using the chip enable to select which

channels are active, increases the number of

possible inputs to the 3-channel outputs.

Where a single channel of the OPA3875 is required,

consider the OPA875.

OPA3875

SELECT

ENABLE

RED OUT GREEN OUT

BLUE OUT

1

0

R0

G0

B0

0

0

R1

G1

B1

X

1

Off

Off

Off

OPA3875 RELATED PRODUCTS

DESCRIPTION

OPA875

Single-Channel OPA3875

OPA4872

Quad 510MHz 4:1 Multiplexer

OPA3693

Triple 650MHz Video Buffer

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.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.