ADC10738 10-Bit Plus Sign Serial I/O A/D Converters with Mux, Sample/Hold and Reference |

ADC10738 (ACTIVE) 10-Bit Plus Sign Serial I/O A/D Converters with Mux, Sample/Hold and Reference



The ADC10731, ADC10732 and ADC10734 are obsolete or on lifetime buy and included for reference only.

This series of CMOS 10-bit plus sign successive approximation A/D converters features versatile analog input multiplexers, sample/hold and a 2.5V band-gap reference. The 1-, 2-, 4-, or 8-channel multiplexers can be software configured for single-ended or differential mode of operation.

An input sample/hold is implemented by a capacitive reference ladder and sampled-data comparator. This allows the analog input to vary during the A/D conversion cycle.

In the differential mode, valid outputs are obtained even when the negative inputs are greater than the positive because of the 10-bit plus sign output data format.

The serial I/O is configured to comply with the MICROWIRE serial data exchange standard for easy interface to the COPS and HPC families of controllers, and can easily interface with standard shift registers and microprocessors.


  • 0V to Analog Supply Input Range
  • Serial I/O (MICROWIRE Compatible)
  • Software or Hardware Power Down
  • Analog Input Sample/Hold Function
  • Ratiometric or Absolute Voltage Referencing
  • No Zero or Full Scale Adjustment Required
  • No Missing Codes Over Temperature
  • TTL/CMOS Input/Output Compatible

Key Specifications

  • Resolution 10 Bits Plus Sign
  • Single Supply 5 V
  • Power Consumption 37 mW (Max)
  • In Power Down Mode 18 μW
  • Conversion Time 5 μs (Max)
  • Sampling Rate 74 kHz (Max)
  • Band-Gap Reference 2.5V ±2% (Max)

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Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) THD (Typ) (dB) Rating
ADC10738 Order now 10     74     8     Microwire (Serial I/O)     -40 to 85     SOIC | 24     3.32 | 1ku     18     24SOIC: 160 mm2: 10.3 x 15.5 (SOIC | 24)     SAR     Differential
Multiplexed     Ext
    5.5     0     4.5     5.5     4.5     5.5     1.25     -78     Catalog