LTC2508CDKD-32#PBF

LTC2508-32 is a low noise, low power, high performance 32bit ADC with an integrated configurable digital filter. It features a fully differential input range upto ±VREF, with VREF ranging from 2.5V to 5.1V. It supports a wide common mode range from 0V to VREF simplifying analogue signal conditioning requirements. It simultaneously provides two output codes: (1) a 32-bit digitally filtered high precision low noise code, and (2) a 22-bit no latency composite code. The configurable digital filter reduces measurement noise by lowpass filtering and down-sampling the stream of data from the SAR ADC core, giving the 32-bit filtered output code. The 22-bit composite code consists of a 14bit code representing the differential voltage and an 8-bit code representing the common mode voltage. It is used in applications such as seismology, energy exploration, automated test equipment (ATE), high accuracy instrumentation.

• Full-scale error drift is ±0.05ppm/°C typical at (TA = 25°C)
• Dynamic range is 145dB typical at (IN+ = IN- = VCM, VREF = 5V, DF = 16384)
• Guaranteed 32bits no missing codes
• Configurable digital filter with synchronization
• Dual output 32bit SAR ADC
• Wide input common mode range
• 1.8V to 5V SPI-compatible serial I/O
• Input common mode rejection ratio is 128dB typical at (TA = 25°C)
• 34MHz typical -3dB bandwidth
• Operating temperature is 0°C to 70°C, package style is 24-lead plastic DFN

บันทึก

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