AD7794CRUZ

AD7794 is a low power, low noise, complete analogue front end for high precision measurement application. It contain a low noise, 24-bit ∑-Δ ADC with six differential inputs. This device contains a precision, low noise, low drift internal band gap reference, and can also accept upto two external differential references. Other on-chip features include programmable excitation current sources, burnout currents, and a bias voltage generator that is used to set the common mode voltage of a channel to AVDD/2. The low-side power switch can be used to power down bridge sensors between conversions, minimizing the system’s power consumption. It is widely used in application such as temperature measurement, pressure measurement, weigh scales, strain gauge transducers, gas analysis, industrial process control, instrumentation, blood analysis, smart transmitters, liquid/gas chromatography, 6-digit DVM etc.

• On-chip bias voltage generator
• Current is 400μA typ, schmitt trigger on SCLK
• Power-down is 1μA max, SPI®, QSPI™, MICROWIRE™, and DSP compatible
• Low noise, programmable gain, instrumentation amp, internal clock oscillator
• Band gap reference with 4ppm/°C drift typical
• Update rate is 4.17Hz to 470Hz, simultaneous 50Hz/60Hz rejection
• Reference detect, programmable current sources
• Burnout currents, low-side power switch, independent interface power supply
• Power supply range is 2.7V to 5.25V, operating temperature is –40°C to +125°C
• Packaging style is 24-lead thin shrink small outline package [TSSOP]

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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