el2260cn Intersil Corporation, el2260cn Datasheet - Page 13

• Manufacturer Part Number: el2260cn
• Description: Dual/quad 130mhz Current Feedback Amplifiers
• Manufacturer: Intersil Corporation

EL2260, EL2460
required in order for the EL2260/EL2460 to survive an
indefinite short.
Channel to Channel Isolation
Due to careful biasing connections within the internal
circuitry of the EL2260/EL2460, exceptionally good channel
to channel isolation is obtained. Isolation is over 70dB at
video frequencies of 4MHz, and over 65dB up to 10MHz.
The EL2460 isolation is improved an additional 10dB, up to
about 5MHz, for amplifiers A to B and amplifiers C to D.
Isolation is improved another 8dB for amplifiers A to C and
amplifiers B to D. See the curve in the Typical Performance
Curves section for more detail.
Driving Cables and Capacitive Loads
When used as a cable driver, double termination is always
recommended for reflection-free performance. For those
applications, the back termination series resistor will
decouple the EL2260 and EL2460 from the capacitive cable
and allow extensive capacitive drive. However, other
applications may have high capacitive loads without
termination resistors. In these applications, an additional
small value (5:–50:) resistor in series with the output will
eliminate most peaking. The gain resistor, R
, can be
G
chosen to make up for the gain loss created by this
additional series resistor at the output.
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