EL5411T(2010) データシートの表示（PDF） - Intersil

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EL5411T
(Rev.:2010)

60MHz Rail-to-Rail Input-Output Operational Amplifier

Intersil 

EL5411T

Applications Information

Product Description

The EL5411T is a high voltage rail-to-rail input-output

amplifier with low power consumption. The EL5411T

contains four amplifiers. Each amplifier exhibits beyond

the rail input capability, rail-to-rail output capability and

is unity gain stable.

The EL5411T features a high slew rate of 100V/µs, and

fast settling time. Also, the device provides common

mode input capability beyond the supply rails, rail-to-rail

output capability, and a bandwidth of 60MHz (-3dB). This

enables the amplifiers to offer maximum dynamic range

at any supply voltage.

Operating Voltage, Input and Output

Capability

The EL5411T can operate on a single supply or dual

supply configuration. The EL5411T operating voltage

ranges from a minimum of 4.5V to a maximum of 19V.

This range allows for a standard 5V (or ±2.5V) supply

voltage to dip to -10%, or a standard 18V (or ±9V) to

rise by +5.5% without affecting performance or

reliability.

The input common-mode voltage range of the EL5411T

extends 500mV beyond the supply rails. Also, the

EL5411T is immune to phase reversal. However, if the

common mode input voltage exceeds the supply voltage

by more than 0.5V, electrostatic protection diodes in the

input stage of the device begin to conduct. Even though

phase reversal will not occur, to maintain optimal

reliability it is suggested to avoid input overvoltage

conditions. Figure 30 shows the input voltage driven

500mV beyond the supply rails and the device output

swinging between the supply rails.

The EL5411T output typically swings to within 50mV of

positive and negative supply rails with load currents of

±5mA. Decreasing load currents will extend the output

voltage range even closer to the supply rails. Figure 31

shows the input and output waveforms for the device in a

unity-gain configuration. Operation is from ±5V supply

with a 1kΩ load connected to GND. The input is a 10VP-P

sinusoid and the output voltage is approximately 9.9VP-P.

Refer to the “Electrical Specifications” Table beginning on

page 3 for specific device parameters. Parameter

variations with operating voltage, loading and/or

temperature are shown in the “Typical Performance

Curves” on page 6.

VS = ±2.5V, TA = +25°C, AV = 1,

VINx = 6VP-P, RL = 1kΩ to GND

OUTPUT

INPUT

10µs/DIV

FIGURE 30. OPERATION WITH BEYOND-THE-RAILS

INPUT

VS = ±5V, TA = +25°C, AV = 1,

VINx = 10VP-P, RL = 1kΩ to GND

10µs/DIV

FIGURE 31. OPERATION WITH RAIL-TO-RAIL INPUT

AND OUTPUT

Output Current

The EL5411T is capable of output short circuit currents of

300mA (source and sink), and the device has built-in

protection circuitry which limits the short circuit current

to ±300mA (typical).

To maintain maximum reliability, the continuous output

current should never exceed ±70mA. This ±70mA limit is

determined by the characteristics of the internal metal

interconnects. Also, see “Power Dissipation” on page 12

for detailed information on ensuring proper device

operation and reliability for temperature and load

conditions.

Unused Amplifiers

It is recommended that any unused amplifiers be

configured as a unity gain follower. The inverting input

should be directly connected to the output and the

non-inverting input tied to the ground.

11

FN6837.2

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