OPA875,pdf(Single 2:1 High-Spe

The OPA875 offers a very wideband, single-channel
2:1 multiplexer in an SO-8 or a small MSOP-8
package. Using only 11mA, the OPA875 provides a
gain of +2 video amplifier channel with greater
than 425MHz large-signal bandwidth (4V PP ). Gain
accuracy and switching glitch are improved over
earlier solutions using a new input stage switching
approach. This technique uses current steering as the
input switch while maintaining an overall closed-loop
design. With greater than 700MHz small-signal
bandwidth at a gain of 2, the OPA875 gives a typical
0.1dB gain flatness to greater than 200MHz.
System power may be reduced using the chip enable
feature for the OPA875. Taking the chip enable line
high powers down the OPA875 to less than 300 µ A
total supply current. Muxing multiple OPA875 outputs
together, then using the chip enable to select which
channels are active, increases the number of possible