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16-Bit, Low-Power, 2-Channel, Sigma-Delta ADCs

Product Details

Key Features

Applications/Uses

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 16
# Input Channels 2
Conv. Rate (ksps) (max) 0.5
Data Bus SPI
ADC Architecture Sigma-Delta
Diff/S.E. Input Diff. Only
External VREF (V) (min) 1
External VREF (V) (max) 1.75
Unipolar VIN (V) (max) 1.225
Bipolar VIN (±V) (max) 1.225
INL (±LSB) 0.98304
Package/Pins PDIP/16
SOIC (W)/16
TSSOP/16
Budgetary
Price (See Notes)
5.16
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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 2
Conv. Rate (ksps) (max) 0.5
Data Bus SPI
ADC Architecture Sigma-Delta
Diff/S.E. Input Diff. Only
External VREF (V) (min) 1
External VREF (V) (max) 1.75
Unipolar VIN (V) (max) 1.225
Bipolar VIN (±V) (max) 1.225
INL (±LSB) 0.98304
Package/Pins PDIP/16
SOIC (W)/16
TSSOP/16
Budgetary
Price (See Notes)
5.16

Key Features

  • Improve Measurement Quality with Excellent DC Accuracy
    • 16-Bit Sigma-Delta ADC with Two Fully-Differential Input Channels
    • 0.0015% INL (max) with No Missing Codes
  • Minimize Power Consumption with Low-Power Dissipation
    • 1.2mW (max) 3V supply
    • 2μA (typ) Power-Down Current
  • Lower System Cost with Integrated Functionality
    • PGA with 1 to 128 Programmable Gain
    • Optional Input Buffers
    • > 98dB 50Hz/60Hz Rejection
  • Increase System Accuracy with Built-in Self Calibration
    • On-Demand Offset and Gain Self-Calibration and System Calibration
    • User-Programmable Offset and Gain Registers
  • Flexible Single Supply Options
    • 2.7V to 3.6V (MAX1415)
    • 4.75V to 5.25V (MAX1416)
  • Pin Compatible Upgrades for MX7705/AD7705

Applications/Uses

  • Flow and Gas Meters
  • Industrial Instruments
  • Loop-Powered Systems
  • Medical Instrumentation
  • Pressure Transducers
  • RTD Measurements
  • Strain-Gauge Measurements
  • Thermocouple Measurements
  • Weigh Scales

Description

The MAX1415/MAX1416 low-power, 2-channel, serial-output analog-to-digital converters (ADCs) use a sigma-delta modulator with a digital filter to achieve 16-bit resolution with no missing codes. These ADCs are pin-compatible upgrades to the MX7705/AD7705. The MAX1415/MAX1416 feature an internal oscillator (1MHz or 2.4576MHz), an on-chip input buffer, and a programmable gain amplifier (PGA). The devices offer an SPI™-/QSPI™-/MICROWIRE™-compatible serial interface.

The MAX1415/MAX1416 are available in 16-pin PDIP, SO, and TSSOP packages.

Simplified Block Diagram

MAX1415, MAX1416: Functional Diagram MAX1415, MAX1416: Functional Diagram Zoom icon

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 .