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16-Bit, 250ksps, +5V SAR ADC with Internal Reference in µMAX

ADC with Internal Reference in Industry-Standard 10-Pin Package

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 16
# Input Channels 1
Conv. Rate (ksps) (max) 250
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 4.096
Unipolar VIN (V) (max) 5
INL (±LSB) 1
Package/Pins UMAX/10
Budgetary
Price (See Notes)
5.46
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Simplified Block Diagram

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 16
# Input Channels 1
Conv. Rate (ksps) (max) 250
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 4.096
Unipolar VIN (V) (max) 5
INL (±LSB) 1
Package/Pins UMAX/10
Budgetary
Price (See Notes)
5.46

Key Features

  • High DC/AC Accuracy Improves Measurement Quality
    • 16-Bit Resolution with No Missing Codes
    • 250ksps Throughput Rates Without Pipeline Delay/Latency
    • 92.2dB SNR and -106.5dB THD at 10kHz
    • 0.5 LSBRMS Transition Noise
    • ±0.8 LSB INL (typ) and ±0.3 LSB DNL (typ)
  • Highly Integrated ADC Saves Cost and Space
    • ±7ppm/°C Internal Reference
    • Internal Reference Buffer
  • Flexible and Low Power Supply Saves Space and Cost
    • +5V Analog and +2.3V to +5V Digital Supply
    • 31mW Power Consumption at 250ksps
    • 10µA in Shutdown Mode
  • Multi-Industry Standard Serial Interface and Small Package Reduces Size
    • SPI/QSPI™/MICROWIRE®/DSP-Compatible
    • 3mm x 5mm, Tiny 10-Pin µMAX Package

Applications/Uses

  • Automatic Test Equipment
  • Data Acquisition Systems
  • Industrial Process Control
  • Medical Instrumentation

Description

The MAX11161 is a 16-bit, 250ksps, SAR ADC offering excellent AC and DC performance with true unipolar input range, internal reference, and small size. The MAX11161 measures a +5V (0 to 5V) input range and can operate with a single 5V supply. The MAX11161 integrates a low drift reference with internal buffer, saving the cost and space of an external reference.

This ADC achieves 92.2dB SNR at 10kHz and -106.5dB THD. The MAX11161 guarantees 16-bit no-missing codes and ±0.8 LSB INL (typ).

The MAX11161 communicates using an SPI-compatible serial interface at 2.3V, 3V, 3.3V, or 5V logic. The serial interface can be used to daisy-chain multiple ADCs for multichannel applications and provides a busy indicator option for simplified system synchronization and timing.

The MAX11161 is offered in a 10-pin, 3mm x 5mm, µMAX® package and is specified over the -40°C to +85°C temperature range.

Simplified Block Diagram

MAX11161: Typical Operating Circuit MAX11161: Typical Operating Circuit 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 .