0.5 µA Rail-to-Rail CMOS Operational Amplifier S-89430/89431 Series

The mini-analog series is a group of ICs that incorporate a general purpose analog circuit in a small package. The S-89430/89431 Series is a CMOS type operational amplifier that feature Rail-to-Rail*1 I/O and an internal phase compensation circuit, and operates at a lower voltage with lower current consumption. These features make this product the ideal solution for small battery-powered portable equipment. These features enable driving at a lower voltage (from 0.9 V) and with lower current consumption (0.5 µA). The S-89430A/89431A Series is a single operational amplifier (one circuit). The S-89430B/89431B Series is a dual operational amplifier (two circuits).

*1. Rail-to-Rail is a trademark of Motorola, Inc.


Lower operating voltage than the conventional general-purpose
Vdd = 0.9 V to 5.5 V
Low current consumption (per circuit)
Idd = 0.5 µA Typ.
Wide I/O voltage range (Rail-to-Rail)
Vcmr = Vss to Vdd
Low input offset voltage
Vio = 10.0 mV Max. (S-89430 Series) Vio = 5.0 mV Max. (S-89431 Series)
No external capacitors required for internal phase compensation
Small packages: SC-88A, SOT-23-5, SNT-8A, TMSOP-8
Lead-free product


  • Mobile phones
  • Notebook PCs
  • Digital cameras
  • Digital video cameras

Parts List

  • U(Ux), S and G at the end of the product name of ABLIC Inc. were used to indicate different material specifications as “environmental code”,
    however, these have now been unified into “lead-free and halogen-free” and are identical in terms of environmental quality.
  • Note: Lead-free plating other than 100% Sn is applied to some limited old products, therefore, please contact our sales representatives for details.
  • These descriptions may be different from the actual product name and parameter.
    Please confirm the product name and specifications with the data sheet again.
  • The information herein is subject to change without notice.