LTC2385-18 - 18-Bit, 5Msps SAR ADC

The LTC®2385-18 is a low noise, high speed, 18-bit 5Msps successive approximation register (SAR) ADC ideally suited for a wide range of applications. The combination of excellent linearity and wide dynamic range makes the LTC2385-18 ideal for high speed imaging and instrumentation applications. No-latency operation provides a unique solution for high speed control loop applications. The very low distortion at high input frequencies enables communications applications requiring wide dynamic range and significant signal bandwidth.

To support high speed operation while minimizing the number of data lines, the LTC2385-18 features a serial LVDS digital interface. The LVDS interface has one-lane and two-lane output modes, allowing the user to optimize the interface data rate for each application.

  • 5Msps Throughput Rate
  • No Pipeline Delay, No Cycle Latency
  • 95.7dB SNR (Typ) at fIN = 1MHz
  • 101dB SFDR (Typ) at fIN = 1MHz
  • Nyquist Sampling Up to 2.5MHz Input
  • Guaranteed 18-Bit, No Missing Codes
  • ±1.5LSB INL (Max)
  • 8.192VP-P Differential Inputs
  • 5V and 2.5V Supplies
  • Internal 20ppm/°C (Max) Reference
  • Serial LVDS Interface
  • 78mW Power Dissipation
  • 32-Pin (5mm × 5mm) QFN Package
Typical Application

  • High Speed Data Acquisition
  • Imaging
  • Communications
  • Control Loops
  • Instrumentation
  • ATE
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2385CUH-18#PBF5x5 QFN-32C$38.50$26.95
LTC2385CUH-18#TRPBF5x5 QFN-32C$38.56$27.01
LTC2385IUH-18#PBF5x5 QFN-32I$44.21$30.95
LTC2385IUH-18#TRPBF5x5 QFN-32I$44.27$31.01
Demo Boards
Part NumberDescriptionPrice
DC2290A-E​LTC2385-18 Demo Board | 18-Bit, 5Msps SAR ADC (Requires DC718 & DC2402 or DC2403)Contact Factory
Companion Boards
Part NumberDescriptionPrice
DC2402ALT6237 ADC Driver Board | Driver for LTC2387 family, Input Frequencies up to 8kHz$25.00
DC2403ALT6200 ADC Driver Board | Driver for LTC2387 family, Input Frequencies up to 1MHz$25.00
DC718CUSB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps)$300.00
Product Selector Card
Press Release
Software and Simulation
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