ADI LTC2368CDE-18#PBF

The LTC2368-18 is a low noise, low power, high speed 18-bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, the LTC2368-18 has a 0V to VREF pseudo-differential unipolar input range with VREF ranging from 2.5V to 5.1V. The LTC2368-18 consumes only 13.5mW and achieves ±2.5LSB INL maximum, no missing codes at 18 bits with 97dB SNR. The LTC2368-18 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 LTC2368-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2368-18 automatically powers down between conversions, leading to reduced power dissipation that scales with the sampling rate.

• 1Msps Throughput Rate
• ±2.5LSB INL (Max)
• Guaranteed 18-Bit No Missing Codes
• Low Power: 13.5mW at 1Msps, 13.5μW at 1ksps
• 97dB 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

• Medical Imaging
• High Speed Data Acquisition
• Portable or Compact Instrumentation
• Industrial Process Control
• Low Power Battery-Operated Instrumentation
• ATE