LTC2379-18 Datasheet | Linear Technology Corporation

Features n 1.6Msps Throughput Rate n ±2LSB INL (Max) n Guaranteed 18-Bit No Missing Codes n Low Power: 18m W at 1.6Msps, 18µW at 1.6ksps n 101.2d B SNR (typ) at f IN = 2k Hz n - 120d B THD (typ) at f IN = 2k Hz n Digital Gain pression (DGC) n Guaranteed Operation to 125°C n 2.5V Supply n Fully Differential Input Range ±VREF n VREF Input Range from 2.5V to 5.1V n No Pipeline Delay, No Cycle Latency n 1.8V to 5V I/O Voltages n SPI-patible Serial I/O with Daisy-Chain Mode n Internal Conversion Clock n 16-Lead MSOP and 4mm × 3mm DFN Packages APPLICATIONS n Medical Imaging n High Speed Data Acquisition n Portable or pact Instrumentation n Industrial Process Control n Low Power Battery-Operated Instrumentation n ATE L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Soft Span is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 7705765. LTC2379-18 18-Bit, 1.6Msps, Low Power SAR ADC with 101.2d B SNR DESCRIPTION The LTC®2379-18 is a low noise, low power, high speed 18-bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, the LTC2379-18 has a ±VREF fully differential input range with VREF ranging from 2.5V to 5.1V. The LTC2379-18 consumes only 18m W and achieves ±2LSB INL maximum, no missing codes at 18 bits with 101.2d B SNR. The LTC2379-18 has a high speed SPI-patible 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 LTC2379-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2379-18 automatically powers down between conversions, leading to reduced power dissipation that scales with the sampling rate. The LTC2379-18 Features a unique digital gain pression (DGC) function, which...