10-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference

 

Part Number	Replacement	Explanation

Description

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The MAX1027/MAX1029/MAX1031 are serial 10-bit analog-to-digital converters (ADCs) with an internal reference and an internal temperature sensor. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. The maximum sampling rate is 300ksps using an external clock. The MAX1031 has 16 input channels, the MAX1029 has 12 input channels, and the MAX1027 has 8 input channels. All input channels are configurable for single-ended or differential inputs in unipolar or bipolar mode. All three devices operate from a +3V supply and contain a 10MHz SPI™/QSPI™/MICROWIRE™-compatible serial port.

The MAX1031 is available in 28-pin, 5mm x 5mm, TQFN with exposed pad and 24-pin QSOP packages. The MAX1027/MAX1029 are only available in QSOP packages. All three devices are specified over the extended -40°C to +85°C temperature range.

MAX1027, MAX1029, MAX1031: Functional Diagram Enlarge+

Key Features

• Internal Temperature Sensor (±0.7°C Accuracy)
• 16-Entry First-In/First-Out (FIFO)
• Analog Multiplexer with True Differential Track/Hold
  • 16-, 12-, 8-Channel Single Ended
  • 8-, 6-, 4-Channel True Differential (Unipolar or Bipolar)
• Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing Codes Over Temperature
• Scan Mode, Internal Averaging, and Internal Clock
• Low-Power Single +3V Operation
  • 1mA at 300ksps
• Internal 2.5V Reference or External Differential Reference
• 10MHz 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface
• Space-Saving 28-Pin 5mm x 5mm TQFN Package

Applications/Uses

• Data Acquisition Systems
• Data Logging
• Industrial Control Systems
• Instrumentation
• Patient Monitoring
• System Supervision