ANALOG DEVICES LTC2348CLX-18#PBF Analogue to Digital Converter, 18 bit, 200 kSPS, Differential, Pseudo Differential, SPI, Single

LTC2348CLX-18#PBF is an octal, 18bit, low noise 8-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V low voltage supply, flexible high voltage supplies, 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 ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V signals. Individual channels may also be disabled to increase throughput on the remaining channels. The wide input common mode range and 118dB CMRR of the device analogue inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. Applications include programmable logic controllers, industrial process control, power line monitoring, test and measurement.

• 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 18bit, no missing codes, differential, wide common mode range inputs
• Signal-to-noise ratio is 96.7dB typ at (SoftSpans 7 and 6: ±10.24V and ±10V ranges, fIN = 2KHz)
• Total harmonic distortion is -109dB typ at (SoftSpans 7 and 6: ±10.24V and ±10V ranges, fIN = 2KHz)
• Input common mode rejection ratio is 118dB typ at (VIN+ = VIN- = 18VP-P 200Hz sine)
• Integral linearity error is ±1LSB typ at (SoftSpans 7 and 6: ±10.24V and ±10V ranges)
• 7MHz typical -3dB input bandwidth at (TA = 25°C, AIN = -1dBFS)
• Aperture jitter is 3psRMS typical at (TA = 25°C, AIN = -1dBFS)
• Operating temperature range from 0°C to 70°C, 48-lead plastic LQFP package

Notes

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