LTC2378-18
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LTC2378-18

18-Bit, 1Msps, Low Power SAR ADC with 102dB SNR

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Part Details
Part Models 10
1ku List Price Starting From $28.91
Features
  • 1Msps Throughput Rate
  • ±1.75LSB INL (Max)
  • Guaranteed 18-Bit No Missing Codes
  • Low Power: 13.5mW at 1Msps, 13.5μW at 1ksps
  • 102dB SNR (typ) at fIN = 2kHz
  • –124dB 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 Daisy-Chain Mode
  • Internal Conversion Clock
  • 16-Lead MSOP and 4mm × 3mm DFN Packages
Additional Details
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The LTC2378-18 is a low noise, low power, high speed 18-bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, the LTC2378-18 has a ±VREF fully differential input range with VREF ranging from 2.5V to 5.1V. The LTC2378-18 consumes only 13.5mW and achieves ±1.75LSB INL maximum, no missing codes at 18 bits with 102dB SNR.

The LTC2378-18 has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3.3V and 5V logic while also featuring a daisy-chain mode. The fast 1Msps throughput with no cycle latency makes the LTC2378-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2378-18 automatically powers down between conversions, leading to reduced power dissipation that scales with the sampling rate.

The LTC2378-18 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
Part Models 10
1ku List Price Starting From $28.91

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Documentation

Documentation

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Product Lifecycle

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Feb 4, 2020

- 20_0132

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

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Software & Part Ecosystem

Software & Part Ecosystem

 
LinearLab Tools
Info:False

A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.

 
PScope
Info:False

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.

 
QuikEval
Info:False

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.

 
DC1783A_REVA FPGA/CPLD Source Code
Info:False

Can't find the software or driver you need?

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Evaluation Kit

Evaluation Kits 2

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DC1805A-F

LTC6362 with 1Msps 18-bit LTC2378-18 Demo Board | SAR ADC, LTC6655-5. Requires DC718 or DC2026

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DC1805A-F

LTC6362 with 1Msps 18-bit LTC2378-18 Demo Board | SAR ADC, LTC6655-5. Requires DC718 or DC2026

LTC6362 with 1Msps 18-bit LTC2378-18 Demo Board | SAR ADC, LTC6655-5. Requires DC718 or DC2026

Product Detail

The LTC6362 is a low power, low noise differential op amp with rail-to-rail input and output swing that has been optimized to drive low power SAR ADCs. The amplifier may be configured to buffer a fully differential input signal or convert a single-ended input signal to a differential output signal.

reference details image

DC1783A-F

LTC2378-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 1Msps, SAR ADC with 102dB SNR. Requires DC718 or DC2026

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DC1783A-F

LTC2378-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 1Msps, SAR ADC with 102dB SNR. Requires DC718 or DC2026

LTC2378-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 1Msps, SAR ADC with 102dB SNR. Requires DC718 or DC2026

Product Detail

The LTC2380/LTC2379/LTC2378/LTC2377/LTC2376 are low power, low noise ADCs with serial outputs that can operate from a single 2.5V supply. The demo manual refers to the LTC2379-18 but applies to all parts in the family, the only difference being the maximum sample rates and the number of bits. The LTC2379-18 supports a ±5V fully differential input range with a 101dB SNR, consumes only 18mW and achieves ±2LSB INL max with no missing codes at 18-bits. The DC1783A demonstrates the DC and AC performance of the LTC2379-18 in conjunction with the DC590 QuikEval and DC718 PScope data collection boards.

Tools & Simulations

Tools & Simulations 3

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

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