ISL28478 Quad Micropower Single Supply Rail-to-Rail Input and Output (RRIO) Op-Amp

ISL28478

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Quad Micropower Single Supply Rail-to-Rail Input and Output (RRIO) Op-Amp

Datasheets,
Related Docs
& Simulations

Ordering Information

Available in RoHS/Pb-Free

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Part No.

Design-In
Status

Temp.

Package

MSL

Price
US $

ISL28478EVAL1Z

Active

Eval Board

N/A

ISL28478FAZ

Active

Full-Range Ind

16 Ld QSOP

1.69

ISL28478FAZ-T7

Active

Full-Range Ind

16 Ld QSOP T+R

1.69

The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice.

MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020

SMD = Standard Microcircuit Drawing

Description

The ISL28278 and ISL28478 are dual and quad channel micropower operational amplifiers optimized for single supply operation over the 2.4V to 5.5V range. They can be operated from one lithium cell or two Ni-Cd batteries. For equivalent performance in a single channel op amp reference EL8178.

These devices feature an Input Range Enhancement Circuit (IREC) which enables them to maintain CMRR performance for input voltages 10% above the positive supply rail and to 100mV below the negative supply. The output operation is rail-to-rail.

The ISL28278 and ISL28478 draw minimal supply current while meeting excellent DC-accuracy, AC-performance, noise and output drive specifications. The ISL28278 contains a power down enable pin that reduces the power supply current to typically 4μA in the disabled state.

Key Features

Low power 120μA typical supply current (ISL28278)
225μV max offset voltage
30pA max input bias current
300kHz typical gain-bandwidth product
105dB typical PSRR
100dB typical CMRR
Single supply operation down to 2.4V
Input is capable of swinging above V+ and below V- (ground sensing)
Rail-to-rail input and output (RRIO)
Enable Pin (ISL28278 only)
Pb-free (RoHS compliant)

Related Documentation

Datasheet(s):
Dual and Quad Precision Micropower Single Supply Rail-to-Rail Input-Output Precision Op Amps

Evaluation Board(s):
ISL284xxEVAL1Z Evaluation Board User’s Guide

Technical Homepage:
Amplifiers/Buffers Precision Analog Homepage

Parametric Data


BW (MHz)		.3

SR (V/μs)		.14

V_S (min) (V)		2.4

V_S (max) (V)		5

I_S (per amp) (mA)		.06

Noise V_N (nV/√Hz)		45

I_BIAS (μA)		.00001

V_OS (max) (mV)		.225

# of Devices/ Channels		4

I_OUT (mA)		26

V_OUT (V)		4.99

Rail-to-Rail Input		Y

Rail-to-Rail Output		Y

PSRR (dB)		105

CMRR (dB)		100

Thermal Shutdown		N

Gain A_V (min)		1

A_VOL or A_ZOL (dB or V/mV)		300

Enable		N

Application Block Diagrams

Electrocardiograph

Applications

Battery- or solar-powered systems
4mA to 25mA current loops
Handheld consumer products
Medical devices
Thermocouple amplifiers
Photodiode pre-amps
pH probe amplifiers

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