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
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.
Evaluation Kits (3)
Documentation & Resources
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R549 Reliability Data3/23/2018
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DC1783A - Demo Manual3/13/2013
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DC1858A - Demo Manual3/6/2013
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DC1805A - Demo Manual5/16/2012
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Precision ADC Selector Guide8/30/2017
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SAR ADC Drivers8/29/2016
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SAR ADC Input Types6/2/2015
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LTC2378-20 - 20-Bit 1Msps SAR ADC 0.5ppm INL1/9/2015
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18-Bit 1.6Msps SAR ADC 101dB SNR11/4/2011
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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
LinearLab Tools
PScope
Tools & Simulations
IBIS Model
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.View our quality and reliability program and certifications for more information.
Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
---|---|---|---|---|
LTC2379CDE-18#PBF | Material Declaration | Reliability Data | 16-Lead DFN (4mm x 3mm w/ EP) | |
LTC2379CDE-18#TRPBF | Material Declaration | Reliability Data | 16-Lead DFN (4mm x 3mm w/ EP) | |
LTC2379CMS-18#PBF | Material Declaration | Reliability Data | 16-Lead MSOP | |
LTC2379CMS-18#TRPBF | Material Declaration | Reliability Data | 16-Lead MSOP | |
LTC2379HMS-18#PBF | Material Declaration | Reliability Data | 16-Lead MSOP | |
LTC2379HMS-18#TRPBF | Material Declaration | Reliability Data | 16-Lead MSOP | |
LTC2379IDE-18#PBF | Material Declaration | Reliability Data | 16-Lead DFN (4mm x 3mm w/ EP) | |
LTC2379IDE-18#TRPBF | Material Declaration | Reliability Data | 16-Lead DFN (4mm x 3mm w/ EP) | |
LTC2379IMS-18#PBF | Material Declaration | Reliability Data | 16-Lead MSOP | |
LTC2379IMS-18#TRPBF | Material Declaration | Reliability Data | 16-Lead MSOP | |
Wafer Fabrication Data | R549 Reliability Data |
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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.