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The AD7719BRUZ is a complete analog front-end for low-frequency measurement applications. It includes two high-resolution Σ-∆ ADCs, switchable matched excitation current sources, low-side power switches, digital I/O ports, and temperature sensors. The 24-bit main channel with PGA accepts fully differential, unipolar and bipolar input signals from 1.024 × REFIN1/128 to 1.024 × REFIN1. The signals can be converted directly from the sensors without signal conditioning. 16-bit auxiliary channels are available with input signals ranging from REFIN2 or REFIN2/2.

Features

High Resolution - ADC

2 independent ADCs (16-bit and 24-bit resolution)

Factory calibrated (no field calibration required)

Output settles in 1 conversion cycle (single conversion mode)

(single conversion mode)

Programmable Gain Front End

Simultaneous sampling and conversion of 2 signal sources

Signal Sources

Independent reference input for each channel

20 Hz synchronized 50 Hz and 60 Hz frequency rejection

Update rate

ISOURCE selectable

24-bit master ADC with no missing codes

13-bit p-p resolution @ 20 Hz, 20 mV range

18-bit p-p resolution at 20 Hz, 2.56 V range

Interface

3-wire serial

SPI®, QSPI™, MICROWIRE™, and DSP compatible

SCLK Schmitt Trigger

Power Supplies

Specified for single 3 V and 5 V operation

Normal: 1.5 mA Typ @ 3 V

Power-down: 10 A (32 kHz crystal operation)

On-chip features

Rail input buffer and PGA

4-bit digital I/O port

On-chip temperature sensor

Dual switchable excitation current sources

Low-side power switch

Reference Detection Circuitry

Applications

Sensor Measurement

Temperature measurement

Pressure measurement

Weighing scales

Portable instruments

4 to 20 mA Transmitters

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

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  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

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• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.