LTC2451CTS8#TRMPBF

模数转换器, 16 bit, 60 SPS, 单端, SPI, 单, 2.7 V

The from is an ultra-tiny, 16bit ∆∑ADC with I2C interface in 8 lead plastic TSOT-23 package. The LTC2451 uses a single supply and 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. It uses a delta-sigma modulator as a converter core and provides single cycle settling time for multiplexed applications. It 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 very large oversampling ratio, has extremely relaxed antialiasing requirements. It is used in system monitoring, environmental monitoring, direct temperature measurements, instrumentation, industrial process control, data acquisition and embedded ADC upgrades.

.

Single 2.7V to 5.5V, GND to VCC single ended input range

.

0.02LSB RMS noise, 2LSB INL no missing codes, 1LSB offset error, 4LSB full scale error

.

Single conversion settling time for multiplexed applications

.

Single cycle operation with auto shutdown

.

400µA supply current, 0.2µA sleep current

.

33.2ms at 30Hz, 16.6ms at 60Hz conversion time, 400KHz clock frequency at full operating temperature

.

Data hold time of 0.9µs max, data set up time of 100ns min at full operating temperature

.

1.4µVRMS transition noise, 80db power supply rejection DC at 30Hz mode TA = 25°C

.

Operating temperature range from 0°C to 70°C

.

Capacitance load for each bus line is 400pF