Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these

specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.

© 2001 Elantec Semiconductor, Inc.

General Description

The EL2245C/EL2445C are dual and quad versions of the popular

EL2045C. They are high speed, low power, low cost monolithic oper-

ational amplifiers built on Elantec's proprietary complementary

bipolar process. The EL2245C/EL2445C are gain-of-2 stable and fea-

ture a 275V/µs slew rate and 100MHz bandwidth at gain-of-2 while

requiring only 5.2mA of supply current per amplifier.

The power supply operating range of the EL2245C/EL2445C is from

±18V down to as little as ±2V. For single-supply operation, the

EL2245C/EL2445C operate from 36V down to as little as 2.5V. The

excellent power supply operating range of the EL2245C/EL2445C

makes them an obvious choice for applications on a single +5V or

+3V supply.

The EL2245C/EL2445C also feature an extremely wide output volt-

At a gain of +2, the EL2245C/EL2445C have a -3dB bandwidth of

100MHz with a phase margin of 50°. They can drive unlimited load

capacitance, and because of their conventional voltage-feedback

topology, the EL2245C/EL2445C allow the use of reactive or non-lin-

ear elements in their feedback network. This versatility combined with

low cost and 75mA of output-current drive make the

EL2245C/EL2445C an ideal choice for price-sensitive applications

requiring low power and high speed.

Connection Diagrams

EL2245CN/CS Dual

EL2445CN/CS Quad

Features

• 100MHz gain-bandwidth at gain-

of-2

• Gain-of-2 stable

• Low supply current (per amplifier)

• Wide supply range

= ±2V to ±18V dual-supply

= 2.5V to 36V single-supply

• High slew rate = 275V/µs

• Fast settling = 80ns to 0.1% for a

10V step

• Low differential gain = 0.02% at

• Low differential phase = 0.07° at

• Stable with unlimited capacitive

load

• Wide output voltage swing

Applications

• Video amplifier

• Single-supply amplifier

• Active filters/integrators

• High-speed sample-and-hold

• High-speed signal processing

• ADC/DAC buffer

• Pulse/RF amplifier

• Pin diode receiver

• Log amplifier

• Photo multiplier amplifier

• Difference amplifier

Ordering Information

Part No.

Temp. Range

Package

Outline #

EL2245CN

-40°C to +85°C

8-Pin P-DIP

MDP0031

EL2245CS

-40°C to +85°C

8-Lead SO

MDP0027

EL2445CN

-40°C to +85°C

14-Pin P-DIP

MDP0031

EL2445CS

-40°C to +85°C

14-Lead SO

MDP0027

EL2245C, EL2445C

Dual/Quad Low-Power 100MHz Gain-of-2 Stable Op Amp