LTC2379-18 - 18-Bit, 1.6Msps, Low Power SAR ADC with 101.2dB SNR

Features

  • 1.6Msps Throughput Rate
  • ±2LSB INL (Max)
  • Guaranteed 18-Bit No Missing Codes
  • Low Power: 18mW at 1.6Msps, 18μW at 1.6ksps
  • 101.2dB SNR (typ) at fIN = 2kHz
  • –120dB THD (typ) at fIN = 2kHz
  • Digital Gain Compression (DGC)
  • Guaranteed Operation to 125°C
  • 2.5V Supply
  • Fully Differential Input Range ±VREF
  • VREF Input Range from 2.5V to 5.1V
  • No Pipeline Delay, No Cycle Latency
  • 1.8V to 5V I/O Voltages
  • SPI-Compatible Serial I/O with Daisychain Mode
  • Internal Conversion Clock
  • 16-pin MSOP and 4mm × 3mm DFN Packages

Typical Application

LTC2379-18 Typical Application
LTC2379-18 Typical Application

Description

The LTC®2379-18 is a low noise, low power, high speed 18-bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, the LTC2379-18 has a ±VREF fully differential input range with VREF ranging from 2.5V to 5.1V. The LTC2379-18 consumes only 18mW and achieves ±2LSB INL maximum, no missing codes at 18‑bits with 101.2dB SNR.

The LTC2379-18 has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3.3V and 5V logic while also featuring a daisychain mode. The fast 1.6Msps throughput with no cycle latency makes the LTC2379-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2379-18 automatically powers down between conversions, leading to reduced power dissipation that scales with the sampling rate.

The LTC2379-18 features a unique digital gain compression (DGC) function, which eliminates the driver amplifier’s negative supply while preserving the full resolution of the ADC. When enabled, the ADC performs a digital scaling function that maps zero-scale code from 0V to 0.1 • VREF and full-scale code from VREF to 0.9 • VREF. For a typical reference voltage of 5V, the full-scale input range is now 0.5V to 4.5V, which provides adequate headroom for powering the driving amplifier from a single 5.5V supply.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

MS-16, DFN-16

LTC2379-18 Package Drawing
LTC2379-18 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC2379CDE-18#PBF DFN 16 C $42.79 $29.95 View
LTC2379CDE-18#TRPBF DFN 16 C $30.01 View
LTC2379CMS-18#PBF MSOP 16 C $42.79 $29.95 View
LTC2379CMS-18#TRPBF MSOP 16 C $30.01 View
LTC2379HMS-18#PBF MSOP 16 H $56.58 $39.61 View
LTC2379HMS-18#TRPBF MSOP 16 H $39.67 View
LTC2379IDE-18#PBF DFN 16 I $49.20 $34.44 View
LTC2379IDE-18#TRPBF DFN 16 I $34.50 View
LTC2379IMS-18#PBF MSOP 16 I $49.20 $34.44 View
LTC2379IMS-18#TRPBF MSOP 16 I $34.50 View
Buy NowRequest Samples
* 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.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1783A-E LTC2379-18 with LTC6655-5/LT6350: 18-Bit, 1.6Msps, SAR ADC with 101dB SNR. Req DC718 or DC590. $150.00
DC1805A-E LTC6362 with 1.6Msps 18-bit LTC2379-18 SAR ADC, LTC6655-5. Req DC718 or DC590. $150.00
DC1858A Low Noise, Low Distortion Sine Wave Generator for LTC2379/LTC2369 SAR ADC Family, Fout=2kHz. $500.00
Buy Now

Companion Boards

Part Number Description Price Documentation
DC2026A Linduino One Isolated Arduino-Compatible Demonstration Board $75.00
DC590B USB Serial Controller for Linear Technology QuikEval Demo Boards $50.00
DC718C USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) $300.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • Medical Imaging
  • High Speed Data Acquisition
  • Portable or Compact Instrumentation
  • Industrial Process Control
  • Low Power Battery-Operated Instrumentation
  • ATE

Product Notifications

Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.

Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.

Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

Technical Support