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OPA875 Datasheet

  • OPA875

  • Triple 2:1 High-Speed Video Multiplexer

  • 615.86KB

  • 22頁(yè)

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Burr Brown Products
from Texas Instruments
OPA3875
SBOS341B 鈥?DECEMBER 2006 鈥?REVISED DECEMBER 2006
Triple 2:1 High-Speed Video Multiplexer
FEATURES
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700MHz SMALL-SIGNAL BANDWIDTH
(A
V
= +2)
425MHz, 4V
PP
BANDWIDTH
0.1dB GAIN FLATNESS to 150MHz
4ns CHANNEL SWITCHING TIME
LOW SWITCHING GLITCH: 40mV
PP
3100V/碌s SLEW RATE
0.025%/0.025擄 DIFFERENTIAL GAIN, PHASE
HIGH GAIN ACCURACY: 2.0V/V
鹵0.4%
DESCRIPTION
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,
video amplifier channels with > 400MHz large-signal
bandwidth (4V
PP
). Gain accuracy and switching glitch
are improved over earlier solutions using a new
(patented) input stage switching approach. This
technique uses current steering as the input switch
while maintaining an overall closed-loop design. Gain
matching between each of the 3-channel pairs is
also significantly improved using this technique
(<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.
System power may be reduced using the chip enable
feature for the OPA3875. Taking the chip enable line
high powers down the OPA3875 to <900碌A(chǔ) total
supply current. Muxing multiple OPA3875 outputs
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
1
75W
APPLICATIONS
RGB SWITCHING
LCD PROJECTOR INPUT SELECT
WORKSTATION GRAPHICS
TRIPLE ADC INPUT MUX
DROP-IN UPGRADE TO LT1675
+5V
75W
RGB
Channel 0
75W
75W
ENABLE
0
0
1
RED OUT GREEN OUT
R0
R1
Off
G0
G1
Off
BLUE OUT
B0
B1
Off
75W
OPA3875
(Patented)
RGB
Out
0
X
75W
RGB
Channel 1
75W
OPA3875 RELATED PRODUCTS
75W
DESCRIPTION
OPA875
OPA4872
OPA3693
Single-Channel OPA3875
Quad 510MHz 4:1 Multiplexer
Triple 650MHz Video Buffer
75W
-5V
Channel
Select
EN
RGB Switching
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 漏 2006, Texas Instruments Incorporated

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