Device Information
 
 
ISL28158 Printer Friendly Version
 
Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
 
Datasheets,
Related Docs
& Simulations		DescriptionKey
Features		Parametric
Data		Application
Diagrams		Related
Devices
 
 
Ordering Information
Green/Pb(Lead free) Device  Available in RoHS/Pb-Free
 Buy direct from Intersil  Check distributor inventory  Request samples
Part No. Design-In
Status		 Temp. Package MSL Price
US $		 PB Free
ISL28158EVAL1Z Active   Eval Board N/A Contact Us PB Free iBuy Disti-Buy  
ISL28158FBZ Active Full-Range Ind 8 Ld SOIC 3 0.89 PB Free iBuy Disti-Buy Sample
ISL28158FBZ-T7 Active Full-Range Ind 8 Ld SOIC T+R 3 0.89 PB Free iBuy Disti-Buy  
ISL28158FHZ-T7 Active Full-Range Ind 6 Ld SOT-23 2 0.70 PB Free iBuy Disti-Buy  
ISL28158FHZ-T7A Active Full-Range Ind 6 Ld SOT-23 T+R 2 0.70 PB Free iBuy Disti-Buy  
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 ISL28158 and ISL28258 are micro-power precision operational amplifiers optimized for single supply operation at 5.5V and can operate down to 2.4V.

These devices feature an Input Range Enhancement Circuit (IREC), which enables them to maintain CMRR performance for input voltages greater than the positive supply. The input signal is capable of swinging 0.25V above the positive supply and to 100mV below the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail.

The ISL28158 and ISL28258 draw minimal supply current while meeting excellent DC-accuracy noise and output drive specifications. Competing devices seriously degrade these parameters to achieve micro-power supply current. Offset current, voltage and current noise, slew rate, and gain bandwidth product are all two to ten times better than on previous micro-power op amps.

The 1/f corner of the voltage noise spectrum is at 100Hz. This results in low frequency noise performance, which can only be found on devices with an order of magnitude higher supply current.

ISL28158 and ISL28258 can be operated from one lithium cell or two Ni-Cd batteries. The input range includes both positive and negative rail. The output swings to both rails.

 
  Key Features
 
  • 34μA typical supply current (ISL28158)
  • 68μA typical supply current (ISL28258)
  • 300μV maximum offset voltage (8 Ld SOIC)
  • 1pA typical input bias current
  • 200kHz gain bandwidth product
  • 2.4V to 5.5V single supply voltage range
  • Rail-to-rail input and output
  • Enable pin (ISL28158 only)
  • Pb-free (RoHS compliant)
Related Documentation
 
Datasheet(s)   Datasheet(s):
 
Evaluation Board(s)   Evaluation Board(s):
 
Technical Homepage   Technical Homepage:
 
 
  Parametric Data
BW (MHz).25
SR (V/μs).1
VS (min) (V)2.4
VS (max) (V)5.5
IS (per amp) (mA).034
Noise VN (nV/√Hz)64
IBIAS (μA).000001
VOS (max) (mV).65
# of Devices/ Channels1
IOUT (mA)30
VOUT (V)4.99
Rail-to-Rail InputY
Rail-to-Rail OutputY
PSRR (dB)98
CMRR (dB)98
Thermal ShutdownN
Gain AV (min)1
AVOL or AZOL (dB or V/mV)220
EnableY
 
  Application Block Diagrams
 
 
 
Applications
 
  • Battery- or solar-powered systems
  • 4mA to 20mA current loops
  • Handheld consumer products
  • Medical devices
  • Sensor amplifiers
  • ADC buffers
  • DAC output amplifiers
 
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