AD7796BRUZ

AD7796 is a complete, analog front end for high precision, bridge sensor applications such as weigh scales. This contains a Σ-∆ ADC capable of 16-bit resolution. The on-chip instrumentation amplifier has a fixed gain of 128, allowing small amplitude signals such as those from bridge sensors to be directly interfaced to the ADC. This device has one differential input and contains a temperature sensor that is internally connected to the ADC. This sensor can be used to perform temperature compensation of the bridge. Application includes weigh scales, strain gauges industrial process control, instrumentation, and portable instrumentation.

• Instrumentation amp, temperature sensor, internal clock oscillator
• Power supply rejection is 90dB min (AIN=1 V/128, AVDD=2.7V to 5.25V, -40°C to +85°C)
• Output update rate range from 4.17 to 123Hz nom (AVDD=2.7V to 5.25V, -40°C to +85°C)
• Power supply currents IDD (power-down mode) is 1µA max (-40°C to +85°C)
• Power supply rejection is 90dB min (AIN=1V/128, -40°C to +85°C)
• Independent interface power supply, INTERFACE, 3-wire serial
• SPI, QSPI™, MICROWIRE, and DSP compatible schmitt trigger on SCLK
• Temperature rating range from -40°C to +85°C
• 16-lead TSSOP package

Notes

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