LTC2344CUH-18#PBF

模数转换器, 18 bit, 400 kSPS, 差分, 伪差分, 串行, 单, 4.75 V

The is a quad, 18bit, 400Ksps/ch differential SoftSpan analogue to digital converter ADC in 32 pin QFN package. This 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 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 ±5V, 0V to 5V, ±2.5V, 0V to 2.5V. This input signal flexibility combined with ±4LSB INL maximum, no missing codes at 1bbits and 95dB SNR makes the LTC2344-86 an ideal choice for many applications requiring wide dynamic range. It supports pin selectable SPI CMOS 1.8V to 5V and LVDS serial interfaces. It is used in programmable logic controllers and high speed data acquisition.

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Integral linearity error of ±1.5LSB and differential linearity error of ±0.5LSB

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18bit, no missing codes

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4.75V to 5.25V supply voltage & 15.1mA supply current 400Ksps, 4 channels enabled, CMOS I/O mode

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Power down mode supply current of 65µA CMOS I/O mode

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95dB SNR, 102dB CMRR at fIN = 200Hz and -114dB THD at fIN = 2KHz

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±50µV zero scale error and ±0.025%FS full scale error

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Rail to rail input overdrive tolerance

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Integrated reference and buffer 4.096V internal conversion clock, no cycle latency

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81mW power dissipation and 22MHz -3dB input bandwidth

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Operating temperature range from 0°C to 70°C