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
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
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
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 Now • Request Samples | ||||||
Demo Boards
Linear Technology demo boards are offered free of charge to qualified customers. Contact your local sales office or distributor to request 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 | |
| Buy Now | |||
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1216A-A | 100MHz High Speed ADC Clock Source | $150.00 | |
| DC590B | USB Serial Controller for Linear Technology QuikEval Demo Boards | $50.00 | |
| DC718C | USB Data Acquisition Controller, for QuikEval -II Evaluation Kits | $300.00 | |
| Buy Now | |||
Applications
- Medical Imaging
- High Speed Data Acquisition
- Portable or Compact Instrumentation
- Industrial Process Control
- Low Power Battery-Operated Instrumentation
- ATE
Simulate
LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.