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Analog Devices / Maxim Integrated MAX11261 Delta-Sigma ADC

Analog Devices Inc. MAX11261 6-channel, 24-bit Delta-Sigma ADC delivers exceptional performance while consuming very little power. The MAX11261 Delta-Sigma ADC generates precision DC measurements and sample rates up to 16ksps. Features include a 64-entry, on-chip FIFO, an I2C-compatible serial interface, and a 6.2nV/√Hz noise programmable gain amplifier (PGA). The integrated PGA has gain settings from 1x to 128x and provides isolation of the signal inputs from the switched capacitor sampling network. This feature allows the Analog Devices Inc. MAX11261 6-channel, 24-bit Delta-Sigma ADC to be used with high-impedance sources without compromising the available dynamic range.

The Maxim MAX11261 ADC operates from a single 2.7V to 3.6V analog supply. The digital supply range of 2.0V to 3.6V enables communication with 1.8V, 2.5V, 3V, or 3.3V logic. This low-power, low-noise Delta-Sigma ADC is ideal for wearable electronics, medical equipment, weigh scales, pressure sensors, and battery-powered instrumentation.

Features

  • Analog supply
    • 2.7V to 3.6V
  • Digital supply
    • 1.7V to 2.0V internal LDO disabled 
    • 2.0V to 3.6V internal LDO enabled
  • 3ppm INL (typ.)
  • PGA
    • Gains of 1, 2, 4, 8, 16, 32, 64, 128
    • Low-noise mode, 6.2nV/√Hz noise
    • Low-power mode, 10nV/√Hz noise
  • Input-referred noise
    • PGA low-noise mode, a gain of 64 at 1ksps continuous, 0.15μVRMS
  • Fully differential signal and reference inputs
  • An internal system clock of 8.192MHz
  • I2C compatible serial interface
  • Supports Standard, Fast-Mode, and Fast-Mode Plus I2C specifications
  • 64-entry on-chip FIFO to offload the host processor
  • Hardware interrupt for input monitoring and FIFO usage
  • On-demand self and system gain and offset calibration
  • User-programmable offset and gain registers
  • Two power-down modes (SLEEP and STANDBY)
  • Low power dissipation
  • ESD rating of ±2.5kV (HBM), 750V (CDM)
  • -40°C to +85°C operating temperature range
  • Wafer-Level Package (WLP) (6 x 6 bump, 0.4mm pitch, 2.838mm x 2.838mm x 0.5mm)

Applications

  • Wearable electronics
  • Medical equipment
  • Weigh scales
  • Pressure sensors
  • Battery-powered instrumentation

Typical Application Circuit

Application Circuit Diagram - Analog Devices / Maxim Integrated MAX11261 Delta-Sigma ADC

Associated Evaluation Tool

Analog Devices / Maxim Integrated MAX11261 utvärderingssats

Utvärderingssats för MAX11261 Delta-Sigma ADC med 24 bitar, 6 kanaler, 16 ksps och integrerad PGA.

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Publicerad: 2018-05-15 | Uppdaterad: 2023-04-12