Linear Technology LTC2338CMS-18#PBF

Description
The LTC2338-18 is an 18-bit, 1Msps, ±10.24V true bipolar, fully differential input ADC with 100dB SNR. It operates from a single 5V supply and has a ±10.24V true bipolar input range. The LTC2338-18 achieves ±4LSB INL maximum, no missing codes at 18-bits with 100dB SNR. It has an onboard single-shot capable reference buffer and low drift (20ppm/°C max) 2.048V temperature compensated reference. The LTC2338-18 also 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 LTC2338-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2338-18 dissipates only 50mW and automatically naps between conversions, leading to reduced power dissipation that scales with the sampling rate. A sleep mode is also provided to reduce the power consumption of the LTC2338-18 to 300μW for further power savings during inactive periods.

Features
1Msps Throughput Rate
±4LSB INL (Max)
Guaranteed 18-Bit No Missing Codes
True Bipolar Input Ranges ±6.25V, ±10.24V, ±12.5V
100dB SNR (Typ) at fiN = 2kHz
-115dB THD (Typ) at fiN = 2kHz
Guaranteed Operation to 125°C
Single 5V Supply
Low Drift (20ppm/°C Max) 2.048V Internal Reference
Onboard Single-Shot Capable Reference Buffer
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
Power Dissipation 50mW (Typ)
16-Lead MSOP Package

Applications
Programmable Logic Controllers
Industrial Process Control
High Speed Data Acquisition
Portable or Compact Instrumentation