10-Bit Serial-Output Temperature Sensor with 5-Channel ADC

Please check latest availability status for a specific part variant.


The MAX1098/MAX1099 implement both local and remote temperature sensing with 10-bit resolution, using +5V and +3V supply voltages, respectively. Accuracy is ±1°C from 0°C to +70°C, with no calibration needed. The devices feature an algorithmic switched-capacitor analog-to-digital converter (ADC), on-chip clock, and 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE®.

The MAX1098/MAX1099 also perform fully differential voltage measurements with 10-bit resolution and separate track-and-hold (T/N) for positive and negative inputs. Both devices accept versatile input modes consisting of two 3-channel signal pairs, five 1-channel signals relative to AIN5, or VDD/4 relative to ground. An external reference may be used for more accurate voltage measurements.

Typical power consumption is only 1.3mW (MAX1099). A shutdown mode and two standby modes provide multiple strategies for prolonging battery life in portable applications that require limited sampling throughput.

The MAX1098/MAX1099 are available in 16-pin SSOP packages.

MAX1098, MAX1098A, MAX1098B, MAX1098C, MAX1099, MAX1099A, MAX1099B, MAX1099C: Functional Diagram MAX1098, MAX1098A, MAX1098B, MAX1098C, MAX1099, MAX1099A, MAX1099B, MAX1099C: Functional Diagram Enlarge+

Key Features

  • Local and Remote Temperature Sensing
  • 12-Bit Resolution for Temperature and 10-Bit Resolution for Voltage Inputs
  • ±1°C Accuracy from -40°C to +85°C
  • Fully Differential Inputs
  • Single-Supply Operation
    • +4.75V to +5.25V (MAX1098)
    • +2.7V to +3.6V (MAX1099)
  • 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface
  • Internal Precision Voltage Reference
    • 2.50V (MAX1098)
    • 1.20V (MAX1099)
  • Space-Saving 16-Pin SSOP Package


  • Communication Systems
  • Handheld Instruments (PDAs, Palmtops)
  • Industrial Process Controls
  • Medical Equipment

See parametric specs for Precision ADCs (< 5Msps) (432)

Part NumberResolution
# Input ChannelsConv. Rate
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
External VREF
External VREF
Bipolar VIN
(ADC)(max)(nominal)(min)(max)(max)(See Notes)
MAX1098 1050.9SARSPIDiff. Only2.50.82.551
$4.98 @1k
$3.96 @1k

See parametric specs for Temperature Sensors (113)

Part NumberSensor TypeInterface#ChannelsAccuracy
Parasite Pwr.Temp. Resolution
MAX1099 Local3-Wire/SPIOne1No10
See Data Sheet

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.

Additional Resources

Temperature Family by Product Type
Request Reliability Report for: MAX1098C 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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.

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