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12-Bit Serial-Output Temperature Sensors with 5-Channel ADC

12-Bit ADCs with ±1° C Internal Temperature Sensor Also Measure Remote Temperatures

Product Details

Key Features

Simplified Block Diagram

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Sampling:
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Key Features

  • Local and Remote Temperature Sensing
  • 12-Bit Resolution for Temperature and Voltage Inputs
  • ±1°C Accuracy from -40°C to +85°C
  • Fully Differential Inputs
  • Single-Supply Operation
    • +4.75V to +5.25V (MAX1298)
    • +2.7V to +3.6V (MAX1299)
  • 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface
  • Internal Precision Voltage Reference
    • 2.50V (MAX1298)
    • 1.20V (MAX1299)
  • Space-Saving 16-Pin SSOP Package

Applications/Uses

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

Description

The MAX1298/MAX1299 implement local and remote temperature sensing with 12-bit resolution, using +5V and +3V supply voltages, respectively. Accuracy is ±1°C from 0 to +70°C, with no calibration needed. The devices feature an algorithmic switched-capacitor analog-to-digital converter (ADC), an on-chip clock, and a 3-wire serial interface compatible with SPI, QSPI™, and MICROWIRE®.

The MAX1298/MAX1299 also perform fully differential voltage measurements with 12-bit resolution and separate track-and-hold (T/H) for positive and negative inputs. Both devices accept versatile input modes consisting of two 3-channel signal pairs, five 1-channel signals relative to an 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 (MAX1299). A shutdown mode and two standby modes provide multiple strategies for prolonging battery life in portable applications that require limited sampling throughput.

The MAX1298/MAX1299 are available in 16-pin SSOP packages.

Simplified Block Diagram

MAX1298, MAX1298A, MAX1298B, MAX1298C, MAX1299, MAX1299A, MAX1299B, MAX1299C: Functional Diagram MAX1298, MAX1298A, MAX1298B, MAX1298C, MAX1299, MAX1299A, MAX1299B, MAX1299C: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.