ISL28270, ISL28273, ISL28470
®
Data Sheet
April 13, 2007
FN6260.2
Micropower, Single Supply, Rail-to-Rail
Input and Output (RRIO) Instrumentation
Amplifier
Features
• 60µA supply current per channel ISL28270
• 150µV max offset voltage
The ISL28270 and ISL28273 are dual channel micropower
instrumentation amplifiers (in-amps) and the ISL28470 is a
Quad-channel in-amp optimized for low 2.4V to 5V single
supplies.
• 2nA max input bias current ISL28270
• 110dB CMRR, PSRR
• 0.7µV/°C offset voltage temperature coefficient
• 240kHz -3dB bandwidth (G = 100) ISL28270, ISL28470
• 230kHz -3dB bandwidth (G = 10) ISL28273
• 0.5V/µs slew rate
All three devices feature an Input Range Enhancement
Circuit (IREC) which maintains CMRR performance for input
voltages equal to the positive supply and down to 50mV
above the negative supply rail. The input signal is capable of
swinging above the positive supply rail and to 10mV above
the negative supply with only a slight degradation of the
CMRR performance. The output operation is rail to rail.
• Single supply operation
• Rail-to-rail input and output (RRIO)
The ISL28273 is compensated for a minimum gain of 10 or
more. For higher gain applications, the ISL28270 and
ISL28470 are compensated for a minimum gain of 100. The
in-amps have bipolar input devices for best offset and
excellent 1/f noise performance. The amplifiers can be
operated from one lithium cell or two Ni-Cd batteries.
• Input is capable of swinging above V+ and below V-
(ground sensing)
• Output sources and sinks ±29mA load current
• 0.5% gain error
• Pb-free plus anneal available (RoHS compliant)
Ordering Information
Applications
PART NUMBER
(Note)
PART
MARKING
TAPE & PACKAGE
REEL (Pb-Free)
PKG.
DWG. #
• Battery or solar-powered systems
• Strain gauge
ISL28270IAZ
(Note)
28270 IAZ
28270 IAZ
28273 FAZ
97/Tube 16 Ld QSOP MDP0040
(Pb-free)
• Sensor signal conditioning
• Medical devices
ISL28270IAZ-T13
(Note)
13”
16 Ld QSOP MDP0040
(1k pcs) (Pb-free)
• Industrial instrumentations
Coming Soon
ISL28273FAZ
(Note)
97/Tube 16 Ld QSOP MDP0040
(Pb-free)
Related Literature
• AN1290, ISL2827xINEVAL1Z Evaluation Board User’s
Guide
Coming Soon
ISL28273FAZ-T7
(Note)
28273 FAZ
7”
16 Ld QSOP MDP0040
(1k pcs) (Pb-free)
• AN1298, Instrumentation Amplifier Application Note
ISL28470FAZ
(Note)
ISL28470FAZ 48/Tube 28 Ld QSOP M28.15
(Pb-free)
ISL28470FAZ-T7
(Note)
ISL28470FAZ
7”
28 Ld QSOP M28.15
(1k pcs) (Pb-free)
ISL28270INEVAL1Z Evaluation Platform
(Note)
ISL28273INEVAL1Z Evaluation Platform
Coming Soon
Evaluation Platform
ISL28470EVAL1Z
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are 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.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2006, 2007. All Rights Reserved.
1
All other trademarks mentioned are the property of their respective owners.