LTC2344IUH-18#PBF

LTC®2344-18 is an 18bit, low noise 4-channel simultaneous 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 LTC2344-18 analogue inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This supports pin-selectable SPI CMOS 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. Application includes programmable logic controllers, industrial process control, medical imaging, high speed data acquisition.

• 400Ksps per channel throughput, four simultaneous sampling channels
• Integral linearity error is ±1.5LSB (typ, TA = 25°C)
• Guaranteed 18bit, no missing codes, differential, wide common mode range inputs
• Signal-to-noise ratio is 95.0dB (typ, SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2KHz)
• Total harmonic distortion is -114dB (typ, SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2KHz)
• Rail-to-rail input overdrive tolerance
• Guaranteed operation to 125°C
• Integrated reference and buffer
• Internal conversion clock, no cycle latency
• 32 lead plastic QFN package, operating temperature range from -40°C to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party