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16-Bit, 1Msps, Low-Power, Fully Differential SAR ADC

16-Bit, Low-Power, SAR ADC with Reference Buffer

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 16
# Input Channels 1
Conv. Rate (ksps) (max) 1000
Data Bus DSP-Compatible Serial
Microwire
QSPI
SPI
ADC Architecture SAR
Diff/S.E. Input Diff. Only
External VREF (V) (max) 3.6
Unipolar VIN (V) (max) 3.6
Bipolar VIN (±V) (max) 3.6
INL (±LSB) 0.5
Package/Pins TQFN/20
Budgetary
Price (See Notes)
5.58
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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) 1000
Data Bus DSP-Compatible Serial
Microwire
QSPI
SPI
ADC Architecture SAR
Diff/S.E. Input Diff. Only
External VREF (V) (max) 3.6
Unipolar VIN (V) (max) 3.6
Bipolar VIN (±V) (max) 3.6
INL (±LSB) 0.5
Package/Pins TQFN/20
Budgetary
Price (See Notes)
5.58

Key Features

  • High DC/AC Accuracy Improves Measurement Quality
    • 16-Bit Resolution with No Missing Codes
    • 1Msps Throughput Rates Without Pipeline Delay/Latency
    • 95.6dB SNR and -115dB THD at 10kHz
    • 0.4 LSBRMS Transition Noise
    • ±0.25 LSB DNL (max) and ±0.5 LSB INL (max)
  • Highly Integrated ADC Saves Cost and Space
    • Internal Reference Buffer
  • Wide Supply Range and Low Power Simplify Power-Supply Design
    • 1.8V Analog Supply
    • 1.5V to 3.6V Digital Supply
    • 6.7mW Power Consumption at 1Msps
    • 6.7µW Power Consumption at 1ksps
    • 1µA in Shutdown Mode
  • Multi-Industry Standard Serial Interface and Small Package Reduces Size
    • SPI/QSPI™/MICROWIRE®/DSP-Compatible Serial Interface
    • 4mm x 4mm 20-Pin TQFN Package

Applications/Uses

  • Automatic Test Equipment
  • Battery-Powered Equipment
  • Data Acquisition Systems
  • Medical Instrumentation
  • Process Control and Industrial Automation
  • Telecommunications
  • Test and Measurement

Description

The MAX11900 is a 16-bit, 1Msps, single-channel, fully differential SAR ADC with internal reference buffers. The MAX11900 provides excellent static and dynamic performance with best-in-class power consumption that directly scales with throughput. The device has a unipolar differential ±VREF input range. Supplies include a 3.3V supply for the reference buffers, a 1.8V analog supply, a 1.8V digital supply, and a 1.5V to 3.6V digital interface supply.

This ADC achieves 95.6dB SNR and -115dB THD, guarantees 16-bit resolution with no-missing codes and 0.5 LSB INL (max).

The MAX11900 communicates data using a SPI-compatible serial interface. The MAX11900 is offered in a 20-pin, 4mm x 4mm, TQFN package and is specified over the -40°C to +85°C operating temperature range.

Simplified Block Diagram

MAX11900: Functional Diagram MAX11900: 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 .