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LTC2344-16 Series

Quad, 16-Bit, 400ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range

Manufacturer: Analog Devices

Catalog

Quad, 16-Bit, 400ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range

Key Features

• 400ksps per Channel Throughput
• Four Simultaneous Sampling Channels
• ±1.25LSB INL (Maximum)
• Guaranteed 16-Bit, No Missing Codes
• Differential, Wide Common Mode Range Inputs
• Per-Channel SoftSpan Input Ranges:±4.096V, 0V to 4.096V, ±2.048V, 0V to 2.048V±5V, 0V to 5V, ±2.5V, 0V to 2.5V
• ±4.096V, 0V to 4.096V, ±2.048V, 0V to 2.048V
• ±5V, 0V to 5V, ±2.5V, 0V to 2.5V
• 93.4dB Single-Conversion SNR (Typical)
• −114dB THD (Typical) at fIN= 2kHz
• 102dB CMRR (Typical) at fIN= 200Hz
• Rail-to-Rail Input Overdrive Tolerance
• Guaranteed Operation to 125°C
• Integrated Reference and Buffer (4.096V)
• SPI CMOS (1.8V to 5V) and LVDS Serial I/O
• Internal Conversion Clock, No Cycle Latency
• 81mW Power Dissipation (Typical)
• 32-Lead (5mm × 5mm) QFN Package

Description

AI
The LTC2344-16 is a 16-bit, low noise 4-channel simulta- neous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V supply and using the internal reference and buffer, each channel of this SoftSpan™ADC can be independently configured on a conversion-by-conversion basis to accept ±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V signals. Individual channels may also be disabled to increase throughput on the remaining channels.The wide input common mode range and 102dB CMRR of the LTC2344-16 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ±1.25LSB INL, no missing codes at 16 bits, and 93.4dB SNR, makes the LTC2344-16 an ideal choice for many applications requiring wide dynamic range.The LTC2344-16 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. Between one and four lanes of data output may be employed in CMOS mode, allowing the user to optimize bus width and throughput.ApplicationsProgrammable Logic ControllersIndustrial Process ControlMedical ImagingHigh Speed Data Acquisition