Analog Devices LTC2338-18 Product Info

• 1Msps Throughput Rate
• ±4LSB INL (Max)
• Guaranteed 18-Bit No Missing Codes
• Fully Differential Inputs
• True Bipolar Input Ranges ±6.25V, ±10.24V, ±12.5V
• 100dB SNR (Typ) at f_IN = 2kHz
• –115dB THD (Typ) at f_IN = 2kHz
• Guaranteed Operation to 125°C
• Single 5V Supply
• Low Drift (20ppm/°C Max) 2.048V Internal Reference
• On-board 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

The LTC2338-18 is a low noise, high speed 18-bit successive approximation register (SAR) ADC with fully differential inputs. Operating from a single 5V supply, the LTC2338-18 has a ±10.24V true bipolar input range, making it ideal for high voltage applications which require a wide dynamic range. The LTC2338-18 achieves ±4LSB INL maximum, no missing codes at 18-bits with 100dB SNR.

The LTC2338-18 has an on-board 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.

Applications

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