Linear Technology LTC2368IMS-18#PBF

Description
The LTC2368-18 is an 18-bit, 1Msps, pseudo-differential unipolar SAR ADC with 97dB SNR. It operates from a 2.5V supply and has a 0V to VREF 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. It has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3.3V and 5V logic and features 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.

Features
1Msps Throughput Rate
±2.5LSB INL (Max)
Guaranteed 18-Bit No Missing Codes
Low Power: 13.5mW at 1Msps, 13.5pW 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 x 3mm DFN Packages

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