200MHz, CMOS, Rail-to-Rail

Output Operational Amplifier

EC5912

3L18N-Rev.P001

Page 5 of 10

APPLICATION INFORMATION

Size

EC5912 series op amps are unity-gain stable and suitable

for

a

wide

range

of

general-

purpose applications. The small footprints of the EC5912 series

packages

save

space

on

printed circuit boards and enable the design of smaller electronic products.

Power Supply Bypassing and Board Layout

EC5912 series

operates

from

a

single

2.5V to 5.5V supply or dual ±1.25V to ±2.75V

supplies. For best performance

, a 0.1μF ceramic capacitor should be placed close to the V

DD

supplies

should

be bypassed to

ground with separate 0.1μF ceramic capacitors.

Low Supply Current

The low supply current (7mA) of EC5912 series will help to maximize battery life. They are

ideal for battery powered systems

Operating Voltage

EC5912 series operate under wide input supply voltage(2.5V to5.5V). In addition, all

Temperature specifications apply from -40℃ to +125℃ Most behavior remains unchanged

throughout the full operating voltage range. These guarantees ensure operation throughout the

single Li-Ion battery lifetime

Rail-to-Rail Input

The input common-mode range of EC5912 series extends 100mV beyond the negative fsupply

normal operation, inputs should be limited to this range.

Rail-to-Rail Output

Rail-to-Rail output swing provides maximum possible dynamic range at the output. This is

particularly important when operating in low supply

voltages.

The

output

voltage

of

EC5912 series can typically swing to less than 10mV from supply rail in light resistive loads

(>100kΩ), and 60mV of supply rail in moderate resistive loads (10kΩ).

Capacitive Load Tolerance

The EC5912 series can directly drive 200pF capacitive load in unity-gain without oscillation.

Increasing the gain en

hances the amplifier’s ability to drive

greater

capacitive

loads.

In unity-gain configurations, the capacitive load drive can be improved by inserting an

isolation resistor RISO in series with the capacitive load, as shown in Figure 1.