Analog Devices LTC2358-18 | Demoboard DC2677A

Description

Demonstration circuit 2677A is a reference design for robust industrial data acquisition applications for the LTC®2358-18. The LTC2358-18 is capable of high voltage measurements with a large input common range; however, the DC2677A implements input protection that allows up to 400V of continuous input protection. Combined with gas discharge tubes, which provide protection from surges, the DC2677A is capable of surviving extreme abuse.This reference design includes the LTC2358-18 SAR ADC, ADA4522-2 dual zero-drift operational amplifier, and an LT6658 dual-output, high current reference for sensor excitation.The digital interface is an HSMC (high-speed mezzanine connector), which is compatible with Altera Cyclone V SoCkit and other Altera FPGA evaluation boards that support 3.3V CMOS I/O.

Features

• Simultaneous Sampling of 8 Buffered Channels
• 200ksps per Channel Throughput
• 500pA/12nA Max Input Leakage at 85°C/125°C
• ±3.5LSB INL (Maximum, ±10.24V Range)
• Guaranteed 18-Bit, No Missing Codes
• Differential, Wide Common Mode Range Inputs
• Per-Channel SoftSpan Input Ranges:
• ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V
• ±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
• 96.4dB Single-Conversion SNR (Typical)
• −111dB THD (Typical) at fIN = 2kHz
• 128dB CMRR (Typical) at fIN = 200Hz
• Rail-to-Rail Input Overdrive Tolerance
• Integrated Reference and Buffer (4.096V)
• SPI CMOS (1.8V to 5V) and LVDS Serial I/O
• Internal Conversion Clock, No Cycle Latency
• 219mW Power Dissipation (27mW/Ch Typical)
• 48-Lead (7mm x 7mm) LQFP Package

Typical applications

• Robust industrial data acquisition applications

More information

• Datasheet
• IC product information