LTC2378-20 Datasheet | Linear Technology

Features n 1Msps Throughput Rate n ±0.5ppm INL (Typ) n Guaranteed 20-Bit No Missing Codes n Low Power: 21m W at 1Msps, 21µW at 1ksps n 104d B SNR (Typ) at f IN = 2k Hz n - 125d B THD (Typ) at f IN = 2k Hz n Digital Gain pression (DGC) n Guaranteed Operation to 85°C n2.5V Supply n Fully Differential Input Range ±VREF n VREF Input Range from 2.5V to 5.1V n No Pipeline Delay, No Cycle Latency n1.8V to 5V I/O Voltages n SPI-patible Serial I/O with Daisy-Chain Mode n Internal Conversion Clock n16-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. Patents Pending. Protected by U.S. Patents, including 7705765, 7961132, 8319673. LTC2378-20 20-Bit, 1Msps, Low Power SAR ADC with 0.5ppm INL DESCRIPTION The LTC®2378-20 is a low noise, low power, high speed 20-bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, the LTC2378-20 has a ±VREF fully differential input range with VREF ranging from 2.5V to 5.1V. The LTC2378-20 consumes only 21m W and achieves ±2ppm INL maximum, no missing codes at 20 bits with 104d B SNR. The LTC2378-20 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 1Msps throughput with no cycle latency makes the LTC2378-20 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2378-20 automatically powers down between conversions, leading to reduced power dissipation that scales with the sampling rate. The LTC2378-20 Features a unique digital gain pression...