Ultra-Low-Power, Single-Supply Op Amp + Comparator + Reference

Please check latest availability status for a specific part variant.


The MAX951–MAX954 feature combinations of a micropower operational amplifier, comparator, and reference in an 8-pin package. In the MAX951 and MAX952, the comparator's inverting input is connected to an internal 1.2V ±2% bandgap reference. The MAX953 and MAX954 are offered without an internal reference. The MAX951/MAX952 operate from a single 2.7V to 7V supply with a typical supply current of 7µA, while the MAX953/MAX954 operate from 2.4V to 7V with a 5µA typical supply current. Both the op amp and comparator feature a common-mode input voltage range that extends from the negative supply rail to within 1.6V of the positive rail, as well as output stages that swing rail-to-rail.

The op amps in the MAX951/MAX953 are internally compensated to be unity-gain stable, while the op amps in the MAX952/MAX954 feature 125kHz typical bandwidth, 66V/ms slew rate, and stability for gains of 10V/V or greater. These op amps have a unique output stage that enables them to operate with an ultra-low supply current while maintaining linearity under loaded conditions. In addition, they have been designed to exhibit good DC characteristics over their entire operating temperature range, minimizing input-referred errors.

The comparator output stage of these devices continuously sources as much as 40mA. The comparators eliminate power-supply glitches that commonly occur when changing logic states, minimizing parasitic feedback and making the devices easier to use. In addition, they contain ±3mV internal hysteresis to ensure clean output switching, even with slow-moving input signals.
MAX951, MAX952, MAX953, MAX954: Typical Operating Circuit MAX951, MAX952, MAX953, MAX954: Typical Operating Circuit Enlarge+

Key Features

  • Op Amp + Comparator + Reference in an 8-Pin µMAX® Package (MAX951/MAX952)
  • 7µA Typical Supply Current (Op Amp + Comparator + Reference)
  • Comparator and Op Amp Input Range Includes Ground
  • Outputs Swing Rail-to-Rail
  • 2.4V to 7V Supply Voltage Range
  • Unity-Gain Stable and 125kHz Decompensated AV > 10V/V Op Amp Options
  • Internal 1.2V ±2% Bandgap Reference
  • Internal Comparator Hysteresis
  • Op Amp Capable of Driving up to 1000pF Load


  • Battery-Powered Applications
  • Infrared Receivers for Remote Controls
  • Instruments, Terminals, and Bar-Code Readers
  • Low-Frequency, Local-Area Alarms/Detectors
  • Photodiode Preamps
  • Smart Cards
  • Smoke Detectors and Safety Sensors
Part NumberInternal Ref.ICC per Comp.
Op. Amp. GBW
Op. Amp. IBIAS
Comp. tPD
Comp. VOUT @Load
Oper. Temp.
1.2V ±2%maxtypminmaxmaxtypminmaxSee Notes
MAX951 Yes100 to VCC-1.620135080 @ 1kHz40.4 to VCC-0.4 @ 100k2.77
-55 to +125
-40 to +85
0 to +70
SOIC (N)/8
$2.73 @1k
MAX952 Yes10125102.7
SOIC (N)/8
$2.56 @1k
MAX954 No8125102.4
SOIC (N)/8
$2.32 @1k
See All Integrated Amplifiers + Comparator + Reference (9)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

App Note 2594
App Note 1031 Low-Power 3V ADC is 0.05% Linear
App Note 823 Two ICs Convert 4-20mA Signal to 0-5V Output

Quality and Environmental Data

Product Reliability Reports: MAX951.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • MAX951 Macromodel
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >


    Related Resources

    DOCSIS 3.1 Programmable-Gain Amplifier

    • Delivers +68dBmV Output Power While Meeting DOCSIS 3.1 Requirements
    • Covers 5MHz–204MHz Output Bandwidth
    • Dual Outputs Eliminates Need for an External RF Switch

    1.7V, Dual microPower Comparator with Built-In Reference

    • microPower Operating Current (Total 1.35μA (Typ), 2.55μA (Max)) Preserves Battery Power
    • Internal Precision Reference Saves Space and Cost of an External Reference
    • < 1% at Room Temperature, < 2.5% Over Temperature Reference

    Transimpedance Amplifier with 100mA Input Current Clamp for Automotive LiDAR

    • AEC-Q100
    • Enables ASIL Compliance (FMEDA Available UponRequest)
    • MAX40660

    Transimpedance Amplifier with 100mA Input Current Clamp for Automotive LiDAR

    • AEC-Q100
    • Enables ASIL Compliance (FMEDA Available UponRequest)
    • MAX40660