LTC2451CDDB#TRMPBF

LTC®2451 is an ultra-tiny, 16-bit, analogue-to-digital converter. This uses a single 2.7V to 5.5V supply, accepts a single-ended analogue input voltage and communicates through an I2C interface. It includes an integrated oscillator that does not require any external components. This includes a proprietary input sampling scheme that reduces the average input sampling current several orders of magnitude lower than conventional ∆∑ converters. This is capable of up to 60 conversions per second and, due to the very large oversampling ratio, has extremely relaxed antialiasing requirements. In the 30Hz mode, this includes continuous internal offset calibration algorithms which are transparent to the user, ensuring accuracy over time and over the operating temperature range. Typical applications are system monitoring, environmental monitoring, direct temperature measurements, instrumentation, industrial process control, data acquisition, embedded ADC upgrades.

• GND to VCC single-ended input range, 0.02LSB RMS noise
• 2LSB INL, no missing codes, 1LSB offset error, 4LSB full-scale error
• Programmable 30/60 conversions per second
• Single conversion settling time for multiplexed applications
• Single-cycle operation with auto shutdown
• 400µA supply current, 0.2µA sleep current
• Internal oscillator—no external components required, 2-wire I2C interface
• 8-lead plastic DFN package
• Temperature rating range from 0°C to 70°C

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