LTC2369-18 - 18-Bit, 1.6Msps, Pseudo- Differential Unipolar SAR ADC with 96.5dB SNR

The LTC®2369-18 is a low noise, low power, high speed 18-bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, the LTC2369-18 has a 0V to VREF pseudo-differential unipolar input range with VREF ranging from 2.5V to 5.1V. The LTC2369-18 consumes only 18mW and achieves ±2.5LSB INL maximum, no missing codes at 18 bits with 96.5dB SNR.

The LTC2369-18 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 1.6Msps throughput with no cycle latency makes the LTC2369-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2369-18 automatically powers down between conversions, leading to reduced power dissipation that scales with the sampling rate.

  • 1.6Msps Throughput Rate
  • ±2.5LSB INL (Max)
  • Guaranteed 18-Bit No Missing Codes
  • Low Power: 18mW at 1.6Msps, 18μW at 1.6ksps
  • 96.5dB SNR (Typ) at fIN = 2kHz
  • –120dB THD (Typ) at fIN = 2kHz
  • Guaranteed Operation to 125°C
  • 2.5V Supply
  • Pseudo-Differential Unipolar Input Range: 0V to 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
Typical Application
LTC2369-18 Typical Application
LTC2369-18 Typical Application
  • Medical Imaging
  • High Speed Data Acquisition
  • Portable or Compact Instrumentation
  • Industrial Process Control
  • Low Power Battery-Operated Instrumentation
  • ATE
LTC2369-18 Package Drawing
LTC2369-18 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2369CDE-18#PBF4x3 DFN-16C$42.79$29.95
LTC2369CDE-18#TRPBF4x3 DFN-16C$30.01
LTC2369IDE-18#PBF4x3 DFN-16I$49.20$34.44
LTC2369IDE-18#TRPBF4x3 DFN-16I$34.50
Demo Boards
Part NumberDescriptionPrice
DC1796A-ELTC6360 driving LTC2369-18 Demo Board | 18-bit, 1.6Msps SAR ADC (req. DC590 or DC718)$150.00
DC1813A-ELTC2369-18 with LTC6655-5/LT6202 Demo Board | 18-Bit, 1.6Msps, Pseudo-Differential Unipolar SAR ADC with 96.5dB SNR. Req DC718 or DC590$150.00
DC1858ALow Noise, Low Distortion Sine Wave Generator for LTC2379/LTC2369 SAR ADC Family, Fout=2kHz$500.00
Companion Boards
Part NumberDescriptionPrice
DC2026CLinduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform$75.00
DC590BIsolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards$50.00
DC718CUSB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps)$300.00
Reliability Data
Product Selector Card
Press Release
Software and Simulation
CAD Symbol
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