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

Small, True Bipolar Input, 16-Bit SAR ADC with Internal Reference

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
Bipolar VIN (±V) (max) 5
INL (±LSB) 1
Package/Pins UMAX/10
Budgetary
Price (See Notes)
11.58
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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
Bipolar VIN (±V) (max) 5
INL (±LSB) 1
Package/Pins UMAX/10
Budgetary
Price (See Notes)
11.58

Key Features

  • High DC/AC Accuracy Improves Measurement Quality
    • 16-Bit Resolution with No Missing Codes
    • 250ksps Throughput Rates without Pipeline Delay/Latency
    • 93dB SNR and -101dB THD at 10kHz
    • 0.5LSBRMS Input-Referred Noise
    • ±0.2 LSB DNL (typ) and ±0.5 LSB INL (typ)
  • Highly Integrated ADC Saves Cost and Space
    • ±7ppm/°C Internal Reference
    • Internal Reference Buffer
    • ±5V Bipolar Analog Input Range
  • Wide Supply Range and Low Power Simplify Power-Supply Design
    • 5V Analog Supply
    • 2.3V to 5V Digital Supply
    • 33mW Power Consumption at 250ksps
    • 10µA in Shutdown Mode
  • Multi-Industry Standard Serial Interface and Small Package Reduce Size
    • SPI/QSPI™/MICROWIRE®/DSP-Compatible Serial Interface
    • 3mm x 5mm, Tiny 10-Pin µMAX Package

Applications/Uses

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

Description

The MAX11169 is a 16-bit, 250ksps, SAR ADC offering excellent AC and DC performance with true bipolar input range, internal reference, and small size. The MAX11169 measures a ±5V (10VP-P) input range while operating from a single 5V supply. A patented charge-pump architecture allows direct sampling of high-impedance sources. The MAX11169 integrates a low drift reference with internal buffer, saving the cost and space of an external reference.

This ADC achieves 93dB SNR at 10kHz and -101dB THD. The MAX11169 guarantees 16-bit no-missing codes and ±0.5 LSB INL (typ).

The MAX11169 communicates using an SPI-compatible serial interface at 2.5V, 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 MAX11169 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

MAX11169: Functional Diagram MAX11169: 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 .