General Description

The EL2045C is a high speed, low power, low cost monolithic operational amplifier built on Elantec’s proprietary complementary bipolar process. The EL2045C is gain-of-2 stable and features a 275 V/μs slew rate and 100 MHz gain-bandwidth product while requiring only 5.2 mA of supply current.

The power supply operating range of the EL2045C is from ±18V down to as little as ±2V. For single-supply operation, the EL2045C operates from 36V down to as little as 2.5V. The excellent power supply operating range of the EL2045C makes it an obvious choice for applications on a single +5V or +3V supply.

The EL2045C also features an extremely wide output voltage swing of ±13.6V with VS = ±5V and RL = 1000Ω. At ±5V, output voltage swing is a wide ±3.8V with RL = 500Ω and ±3.2V with RL = 150Ω. Furthermore, for single-supply operation at +5V, output voltage swing is an excellent 0.3V to 3.8V with RL = 500Ω.

At a gain of +2, the EL2045C has a -3 dB bandwidth of 100 MHz with a phase margin of 50°. It can drive unlimited load capacitance, and because of its conventional voltage-feed back topology, the EL2045C allows the use of reactive or nonlinear elements in its feedback network. This versatility combined with low cost and 75 mA of output-current drive makes the EL2045C an ideal choice for price-sensitive applications requiring low power and high speed.

Features

● 100 MHz gain-bandwidth product

● Gain-of-2 stable

● Low supply current

= 5.2 mA at VS = ±15V

● Wide supply range

= ±2V to ±18V dual-supply

= 2.5V to 36V single-supply

● High slew rate = 275 V/μs

● Fast settling = 80 ns to 0.1 for a 10V step

● Low differential gain = 0.02° at AV = +2, RL = 150Ω

● Low differential phase = 0.07° at AV = +2, RL = 150Ω

● Stable with unlimited capacitive load

● Wide output voltage swing

= ±13.6V with VS = ±15V, RL = 1000Ω

= 3.8V/0.3V with VS = ±5V, RL = 500Ω

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