Overview

Features and Benefits

  • 2x Speed Up Version of the LTC2430: 15Hz Output Rate, 60Hz Notch—LTC2435; 13.75Hz Output Rate, Simultaneous 50Hz/60Hz Notch-LTC2435-1
  • Differential Input and Differential Reference with GND to VCC Common Mode Range
  • 3ppm INL, No Missing Codes
  • 10ppm Gain Error
  • 0.8ppm Noise
  • Single Conversion Settling Time for Multiplexed Applications
  • Internal Oscillator—No External Components Required
  • 20-Bit ADC in Narrow SSOP-16 Package (SO-8 Footprint)
  • Single Supply 2.7V to 5.5V Operation
  • Low Supply Current (200µA,4µA in Auto Sleep)

Product Details

The LTC2435/2435-1 are 2.7V to 5.5V micropower 20-bit differential ∆∑ analog to digital converters with integrated oscillator, 3ppm INL and 0.8ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2435 can be configured for better than 110dB input differential mode rejection at 50Hz or 60Hz ±2%, or it can be driven by an external oscillator for a user defined rejection frequency. The LTC2435-1 can be configured for better than 87dB input differential mode rejection over the range of 49Hz to 61.2Hz (50Hz and 60Hz ±2% simultaneously). The internal oscillator requires no external frequency setting components.

The converters accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement configurations. The fullscale differential input range is from –0.5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode voltage, VINCM, may be independently set anywhere within the GND to VCC range of the LTC2435/LTC2435-1. The DC common mode input rejection is better than 120dB.

The LTC2435/LTC2435-1 communicate through a flexible 3-wire digital interface which is compatible with SPI and MICROWIRE protocols.

Applications

  • Direct Sensor Digitizer
  • Weight Scales
  • Direct Temperature Measurement
  • Gas Analyzers
  • Strain Gage Transducers
  • Instrumentation
  • Data Acquisition
  • Industrial Process Control
  • 6-Digit DVMs

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

LTC2435 Companion Parts

Recommended µModule Isolator

Recommended Related Parts

Recommended Suggested Oscillator

Reference Materials

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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