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LTC2379-18: 18-Bit, 1.6Msps, Low Power SAR ADC with 101.2dB SNR Data Sheet9/19/2016PDF556K
LTC2379-18
18-Bit, 1.6Msps, Low Power SAR ADC with 101.2dB SNR
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Overview
Features and Benefits
- 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
Product Details
The LTC2379-18 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.
Applications
- Medical Imaging
- High Speed Data Acquisition
- Portable or Compact Instrumentation
- Industrial Process Control
- Low Power Battery-Operated Instrumentation
- ATE
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
Documentation & Resources
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R549 Reliability Data3/23/2018PDF43 K
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AN132 - Fidelity Testing for A to D Converters10/13/2011PDF3M
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DC1783A - Demo Manual3/13/2013PDF1M
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DC1858A - Demo Manual3/6/2013PDF741K
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DC1805A - Demo Manual5/16/2012PDF753K
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DN494 - Driving a Low Noise, Low Distortion 18-Bit, 1.6Msps ADC9/14/2012PDF1M
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Precision ADC Selector Guide8/30/2017PDF5M
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SAR ADC Drivers8/29/2016PDF276K
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SAR ADC Input Types6/2/2015PDF148K
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LTC2378-20 - 20-Bit 1Msps SAR ADC 0.5ppm INL1/9/2015PDF385K
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18-Bit 1.6Msps SAR ADC 101dB SNR11/4/2011PDF877K
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LTC2379/LTC2380 Video Product Brief10/15/2018
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The Refulator: The Capabilities of a 200 mA Precision Voltage Reference4/6/2018 Analog Dialogue
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Low Power, DC Accurate Drivers for 18-Bit ADCs7/1/2013 LT Journal
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Offset Adjust for a Differential Op Amp Driving an ADC2/4/2013
Software & Systems Requirements
Evaluation Code
Evaluation Software
QuikEval
The QuikEval system is a USB-based product demonstration and data acquisition system that allows users to quickly evaluate the performance of products. The system consists of a USB Data Acquisition Controller board (DC590B) that connects to individual daughter cards for specific products.
LinearLab Tools
A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.
PScope
The PScope System is a USB-based product demonstration and data acquisition system for use with high performance ADCs and signal chain receiver family. PScope allows users to evaluate the SNR, SFDR, THD, as well as other key parameters, quickly and easily.
Tools & Simulations
IBIS Models
IBS
LTC2380 IBIS MODEL
546.00K
Product Recommendations
LTC2379-18 Companion Parts
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.
PCN-PDN Information
Support & Discussions
Sample & Buy
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.