LTC2358HLX-18#PBF

LTC2358HLX-18#PBF is an 18-bit, low noise 8-channel simultaneous sampling successive approximation register (SAR) ADC with buffered differential, wide common mode range picoamp inputs. Individual channels can be disabled to enhance throughput on the remaining channels. The integrated picoamp-input analogue buffers, wide input common-mode range, and 128dB CMRR of the LTC2358-18 enable the ADC to directly digitize various signals while minimizing board space and power consumption. The LTC2358-18 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces, allowing for flexibility in data output configuration. Users can employ between one and eight lanes of data output in CMOS mode to optimize bus width and throughput. Applications for this ADC include programmable logic controllers, industrial process control, power line monitoring, and test and measurement.

• Simultaneous sampling of 8 buffered channels, 200ksps per channel throughput
• Analog input leakage current is 500pA max (TA=25°C), supply voltage range from 7.5 to 38V (TA=25°C)
• Integral linearity error is ±1LSB typ (SoftSpans 7 and 6: ±10.24V and ±10V, TA=25°C)
• Resolution is 18Bits min (TA=25°C), no missing codes is 18Bits min (TA=25°C)
• Differential, wide common mode range inputs
• Signal-to-noise ratio is 96.4dB typ (SoftSpans 7 and 6: ±10.24V and ±10V, TA=25°C)
• Total harmonic distortion is -111dB typ (SoftSpans 7 and 6: ±10.24V and ±10V, TA=25°C)
• Input common mode rejection ratio is 128dB typ (VIN+=VIN−=18VP-P 200Hz Sine, TA=25°C)
• Rail-to-rail input overdrive tolerance, internal conversion clock, no cycle latency
• 48 lead plastic LQFP package, operating temperature range from -40°C to 125°C

Notes

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