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LTC2418 - 8-/16-Channel 24-Bit No Latency Delta Sigma ADCs

Features

  • Click Here for LTC2418 Evaluation Kits
  • 8-/16-Channel Single-Ended or 4-/8-Channel Differential Inputs (LTC2414/LTC2418)
  • Low Supply Current (200µA Plus 4µA Autosleep)
  • Differential Input and Differential Reference with GND to VCC Common Mode Range
  • 2ppm INL, No Missing Codes
  • 2.5ppm Full-Scale Error and 0.5ppm Offset
  • 0.2ppm Noise
  • No Latency: Digital Filter Settles in a Single Cycle. Each Conversion Is Accurate, Even After a New Channel is Selected
  • Single Supply 2.7V to 5.5V Operation
  • Internal Oscillator—No External Components Required
  • 110dB Min, 50Hz/60Hz Notch Filter

Typical Application

LTC2418
LTC2418
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Description

The LTC2414/LTC2418 are 8-/16-channel (4-/8-differential) micropower 24-bit Delta Ssigma analog-to-digital converters. They operate from 2.7V to 5.5V and include an integrated oscillator, 2ppm INL and 0.2ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2414/LTC2418 can be configured for better than 110dB differential mode rejection at 50Hz or 60Hz ±2%, or they can be driven by an external oscillator for a user-defined rejection frequency. The internal oscillator requires no external frequency setting components.

The LTC2414/LTC2418 accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement applications. They can be configured to take 4/8 differential channels or 8/16 single-ended channels. The full-scale bipolar input range is from -5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode voltage, VINCM, may be independently set within GND to VCC. The DC common mode input rejection is better than 140dB.

The LTC2414/LTC2418 communicate through a flexible 4-wire digital interface that is compatible with SPI and MICROWIRE™ protocols.

 

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Packaging

SSOP-28

LTC2418
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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC2418CGN SSOP 28 C $9.00 $6.95 View
LTC2418CGN#PBF SSOP 28 C $9.00 $6.95 View
LTC2418CGN#TR SSOP 28 C   $7.05 View
LTC2418CGN#TRPBF SSOP 28 C   $7.05 View
LTC2418IGN SSOP 28 I $9.90 $7.70 View
LTC2418IGN#PBF SSOP 28 I $9.90 $7.70 View
LTC2418IGN#TR SSOP 28 I   $7.80 View
LTC2418IGN#TRPBF SSOP 28 I   $7.80 View
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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 Linear Technology sales office or authorized distributor.

Evaluation Kits

Part Number Description Price
DC571A LTC2418CGN | 8-Channel Differential Input 24-Bit ADC, (req DC590) $50.00
DC590B none | USB Serial Controller $50.00
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Applications

  • Direct Sensor Digitizer
  • Weight Scales
  • Direct Temperature Measurement
  • Gas Analyzers
  • Strain Gauge Transducers
  • Instrumentation
  • Data Acquisition
  • Industrial Process Control
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Simulate

Linear Technology offers free software and demo boards that greatly simplify the task of testing and evaluating our data converters. To use these powerful tools with this product:

  • Download the QuickEval System software. The QuickEval System is a USB-based product demonstration and data acquisition system for use with Linear Technology’s A/D, D/A, LED drivers and Powered Ethernet Controllers. The software also includes web links to the appropriate device data sheets and provides an automatic update feature to keep the software current with the latest set of device drivers.

  • Request the DC590 USB Data Acquisition Controller either online or from your local sales representative. The DC590 interfaces with the USB port of your computer and connects to daughter cards for specific Linear Technology data converters.

  • Request the evaluation kit for the LTC2418 (DC571A), either online or from your local sales representative. This daughter card interfaces with the DC590 and, along with the QuickEval software package, allows easy evaluation of the part from your PC.
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