MAX1302 Analog-to-Digital Converter

By Maxim Integrated 231

MAX1302 Analog-to-Digital Converter

Maxim's MAX1302 multirange, low-power, 16 bit, successive-approximation analog-to-digital converter (ADC) operates from a single +5 V supply and achieves throughput rates up to 115 ksps. A separate digital supply allows digital interfacing with a 2.7 V to 5.25 V system using the SPI-/QSPI™-/MICROWIRE®-compatible serial interface. Partial power-down mode reduces the supply current to 1.3 mA (typ). Full power-down mode reduces the power-supply current to 1 µA (typ).

The MAX1302 provides eight (single-ended) or four (true differential) analog input channels. Each analog input channel is independently software programmable for seven single-ended input ranges (0 V to +VREF/2, -VREF/2 to 0 V, 0 V to +VREF, -VREF to 0 V, ±VREF/4, ±VREF/2, and ±VREF), and three differential input ranges (±VREF/2, ±VREF, ±2 x VREF). An on-chip +4.096 V reference offers a small convenient ADC solution. The MAX1302 also accepts an external reference voltage between 3.800 V and 4.136 V.

  • Software-programmable input range for 8 separate channels
  • Single-ended input ranges:
    • 0 V to +VREF/2, -VREF/2 to 0 V, 0 V to +VREF, -VREF to 0 V, ±VREF/4, ±VREF/2, and ±VREF
  • Differential input ranges:
    • ±VREF/2, ±VREF, and ±2 x VREF
  • Eight single-ended or four differential analog inputs
  • ±6 V overvoltage tolerant inputs
  • Internal or external reference
  • 115 ksps maximum sample rate
  • Single +5 V power supply
  • 24-pin TSSOP package
  • Lead-(Pb)-free/RoHS-compliant
  • Avionics
  • Data-acquisition systems
  • Industrial control systems
  • Robotics

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