Device Information
 
 
EL8172 Printer Friendly Version
 
Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifiers
 
Datasheets,
Related Docs
& Simulations		DescriptionKey
Features		Parametric
Data		Application
Diagrams		Related
Devices
 
 
Ordering Information
 iBuy direct from Intersil  iBuy direct - out of stock  Request samples
 Check distributor inventory Green/Pb(Lead free) Device  Available in RoHS/Pb-Free  
Part No. Design-In
Status		 Temp. Package MSL Price
US $		 PB Free
EL8172FSZ Active Full-Range Ind 8 Ld SOIC 3 1.14 PB Free Out of stock Disti-Buy Sample
EL8172FSZ-T7 Active Full-Range Ind 8 Ld SOIC T+R 3 1.14 PB Free Disti-Buy  
EL8172IS InActive Ind 8 Ld SOIC 1 N/A      
EL8172IS-T13 InActive Ind 8 Ld SOIC T+R 1 N/A      
EL8172IS-T7 InActive Ind 8 Ld SOIC T+R 1 N/A      
EL8172ISZ InActive Ind 8 Ld SOIC 3 N/A PB Free    
EL8172ISZ-T13 InActive Ind 8 Ld SOIC T+R 3 N/A PB Free    
EL8172ISZ-T7 InActive Ind 8 Ld SOIC T+R 3 N/A PB Free    
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 EL8171 and EL8172 are micropower instrumentation amplifiers optimized for single supply operation over the +2.4V to +5.5V range. Inputs and outputs can operate rail-to-rail. As with all instrumentation amplifiers, a pair of inputs provide very high common-mode rejection and are completely independent from a pair of feedback terminals. The feedback terminals allow zero input to be translated to any output offset, including ground. A feedback divider controls the overall gain of the amplifier.

The EL8172 is compensated for a gain of 100 or more, and the EL8171 is compensated for a gain of 10 or more. The EL8171 and EL8172 have PMOS input devices that provide sub-nA input bias currents.

The amplifiers can be operated from one lithium cell or two Ni-Cd batteries. The EL8171 and EL8172 input range goes from below ground to slightly above positive rail. The output stage swings completely to ground (ground sensing) or positive supply - no pull-up or pull-down resistors are needed.

 
  Key Features
 
  • 95μA maximum supply current
  • Maximum input offset voltage
    • 300μV (EL8172)
    • 1500μV (EL8171)
  • 50pA maximum input bias current
  • 450kHz -3dB bandwidth (G = 10)
  • 170kHz -3dB bandwidth (G = 100)
  • Single supply operation
    • Input voltage range is rail-to-rail
    • Output swings rail-to-rail
    • Ground sensing
  • Pb-free (RoHS compliant)
Related Documentation
 
Application Note(s)   Application Note(s):
 
Datasheet(s)   Datasheet(s):
 
Technical Homepage   Technical Homepage:
 
 
  Parametric Data
BW (MHz).17
SR (V/μs).55
VS (min) (V)2.4
VS (max) (V)5.5
IS (per amp) (mA).095
Noise VN (nV/√Hz)80
IBIAS (μA).00001
VOS (max) (mV).3
# of Devices/ Channels1
IOUT (mA)26
VOUT (V)4.99
Rail-to-Rail InputY
Rail-to-Rail OutputY
PSRR (dB)104
CMRR (dB)100
Gain AV (min)100
EnableN
Gain Error (%).2
 
  Application Block Diagrams
 
 
 
Applications
 
  • Battery- or solar-powered systems
  • Strain gauges
  • Current monitors
  • Thermocouple amplifiers
 
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