ANALOG DEVICES LTC2344CUH-16#PBF Analogue to Digital Converter, 16 bit, 400 kSPS, Differential, Pseudo Differential, Serial

LTC2344CUH-16#PBF is a quad, 16bit, low noise 4-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. It operates from a 5V supply and uses 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 analogue 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 device an ideal choice for many applications requiring wide dynamic range. Applications include programmable logic controllers, industrial process control, medical imaging, and high-speed data acquisition.

• Integrated reference and buffer (4.096V), SPI CMOS (1.8V to 5V) and LVDS serial I/O
• Internal conversion clock, no cycle latency, rail-to-rail input overdrive tolerance
• Guaranteed 16bit, no missing codes, integral linearity error is 1.25LSB max at (TA = 25°C)
• Signal-to-(noise + distortion) ratio is 93.4dB typ at (SoftSpans 7 and 6: ±4.096V and ±4V ranges)
• 22MHz typical -3dB bandwidth at (TA = 25°C, AIN = -1dBFS)
• Aperture jitter is 3psRMS typical at (TA = 25°C, AIN = -1dBFS)
• Total harmonic distortion is -114dB typ at (SoftSpans 7 and 6: ±4.096V and ±4V ranges)
• Full-scale error is ±0.025%FS typical at (VREFBUF = 4.096V (REFBUF overdriven))
• 400ksps per channel throughput, aperture delay is 1ns typical at (TA = 25°C, AIN = -1dBFS)
• Operating temperature range from 0°C to 70°C, 32-lead plastic QFN package

Notes

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