el2070 Intersil Corporation, el2070 Datasheet - Page 9

• Manufacturer Part Number: el2070
• Description: 200mhz Current Feedback Amplifier
• Manufacturer: Intersil Corporation

package, and constructed with as little coupling to the
ground plane as possible.
Capacitance at the output node will reduce stability,
eventually resulting in peaking, and finally oscillation if the
capacitance is large enough. The design of the EL2070
allows a larger capacitive load than comparable products,
yet there are occasions when a series resistor before the
capacitance may be needed. Please refer to the graphs to
determine the proper resistor value needed.
9
EL2070
Disable/Enable Operation
The EL2070 has a disable/enable control input at pin 8. The
device is enabled and operates normally when pin 8 is left
open or tied to pin 7. When more than 350µA is pulled from
pin 8, the EL2070 is disabled. The output becomes a high
impedance, the inverting input is no longer driven to the
positive input voltage, and the supply current is reduced by
2/3. To make it easy to use this feature, there is an internal
resistor to limit the current to a safe level (0.8mA) if pin 8 is
grounded.
To draw current out of pin 8 an open-collector TTL output, a
5V CMOS output, or an NPN transistor can be used.