
1
FN6301.4
ISL28176, ISL28276, ISL28476
Single, Dual and Quad Micropower Single
Supply Rail-to-Rail Input and Output
(RRIO) Precision Op Amp
The ISL28176, ISL28276 and ISL28476 are single, dual and
quad channel micropower operational amplifiers optimized
for single supply operation over the 2.4V to 5V range. They
can be operated from one lithium cell or two Ni-Cd batteries.
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 down to
the negative supply. The output operation is rail-to-rail.
The ISL28276 and ISL28476 draw minimal supply current
while meeting excellent DC-accuracy, AC-performance,
noise and output drive specifications. The ISL28276 (QSOP
package only) contains a power-down enable pin that
reduces the power supply current to typically 4A in the
disabled state.
Features
Low power 120A typical supply current (ISL28276)
100V maximum offset voltage
500pA typical input bias current
400kHz typical gain-bandwidth product
115dB typical PSRR and CMRR
Single supply operation down to 2.4V
Input is capable of swinging above V+ and to V- (ground
sensing)
Rail-to-rail input and output (RRIO)
Pb-free (RoHS compliant)
Applications
Battery- or solar-powered systems
4mA to 25mA current loops
Handheld consumer products
Medical devices
Thermocouple amplifiers
Photodiode pre-amps
pH probe amplifiers
Ordering Information
PART NUMBER
(Note)
PART
MARKING
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL28176FBZ*
28176 FBZ
8 Ld SOIC
MDP0027
ISL28276FBZ*
28276 FBZ
8 Ld SOIC
MDP0027
ISL28276IAZ*
28276 IAZ
16 Ld QSOP MDP0040
ISL28476FAZ*
28476 FAZ
16 Ld QSOP MDP0040
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination
finish, which is RoHS compliant and compatible with both SnPb and
Pb-free soldering operations). Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J STD-020.
Data Sheet
June 23, 2009
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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