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24-Bit Multi-Channel Low-Power 1.9ksps Delta-Sigma ADC with PGA

Low-Power, High-Precision ADC with Integrated Features for Accurate Sensing

产品详情

主要特征

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 24
# Input Channels 10
Conv. Rate (ksps) (max) 1.92
Data Bus SPI
ADC Architecture Sigma-Delta
Diff/S.E. Input Both
External VREF (V) (min) 0
External VREF (V) (max) 3.6
Unipolar VIN (V) (max) 3.6
INL (±LSB) 160
Package/Pins TQFN/28
Budgetary
Price (See Notes)
4.26
缩小

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参量

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 24
# Input Channels 10
Conv. Rate (ksps) (max) 1.92
Data Bus SPI
ADC Architecture Sigma-Delta
Diff/S.E. Input Both
External VREF (V) (min) 0
External VREF (V) (max) 3.6
Unipolar VIN (V) (max) 3.6
INL (±LSB) 160
Package/Pins TQFN/28
Budgetary
Price (See Notes)
4.26

主要特征

  • High Resolution and Low Noise for Signal Sources with Wide Dynamic Range
    • 24-Bit Resolution
    • Programmable Gain Amplifier with 1, 2, 4, 8, 16, 32, 64, and 128 Gain Options
    • 90dB Simultaneous 60Hz and 50Hz Power Line Rejection
    • 3ppm Typical INL with No Missing Codes
  • Optimized Features for More Efficient System Design
    • 10 Analog Inputs May Be Used for Single-Ended/Fully Differential in Any Combination
    • Two Dedicated/One Shared Differential Voltage Reference Inputs
    • On Demand Offset and Gain Self-Calibration
  • Low Power for Efficient Systems
    • 2.7V to 3.6V Analog Supply Range
    • 1.7V to 3.6V I/O Supply Range
    • <1µA Sleep Mode
  • Standard SPI-Compatible Control Interface
  • Selectable Internal/External Oscillator
  • Operating Temperature Range from -40°C to +125°C
  • Small, 28-Pin, 4mm x 4mm TQFN Package: Lead-Free and RoHS Compliant

应用/用途

  • Portable Instruments
  • Resistive Bridge Measurement
  • Sensor Measurement

描述

The MAX11410 is a low-power, multichannel, 24-bit delta-sigma (Δ-Σ) ADC with features and specifications that are optimized for precision sensor measurement.

The input section includes a low-noise programmable gain amplifier (PGA) with very high input impedance and available gains from 1x to 128x to optimize the overall dynamic range. Input buffers provide isolation of the signal inputs from the switched-capacitor sampling network when the PGA is not in use, making the ADC easy to drive even with high-impedance sources.

Several integrated features simplify precision sensor applications. The programmable matched current sources provide excitation for resistive sensors. An additional current sink and current source aid in detecting broken sensor wires. The 10-channel input multiplexer provides the flexibility needed for complex, multi-sensor measurements. GPIOs reduce isolation components and ease control of switches or other circuitry.

When used in single-cycle mode, the digital filter settles within a single conversion cycle. The available FIR digital filter allows single-cycle settling in 16ms while providing more than 90dB simultaneous rejection of 50Hz and 60Hz line noise.

The integrated on-chip oscillator requires no external components. If needed, an external clock source may be used instead. Control registers and conversion data are accessed through the SPI-compatible serial interface.

简化框图

MAX11410A: Simplified Block Diagram MAX11410A: Simplified Block Diagram Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心