AD7714ARZ-5

Number of A/D Converters:	1
Base Part Number:	AD7714
Supplier Device Package:	24-SOIC
Package / Case:	24-SOIC (0.295", 7.50mm Width)
Operating Temperature:	-40°C ~ 85°C
Features:	PGA
Voltage - Supply, Digital:	3 V ~ 5.25 V
Voltage - Supply, Analog:	5V
Reference Type:	External
Architecture:	Sigma-Delta
Series:	--
Ratio - S/H:ADC:	--
Configuration:	MUX-PGA-ADC
Data Interface:	SPI, DSP
Input Type:	Differential, Pseudo-Differential
Number of Inputs:	3, 5
Sampling Rate (Per Second):	1k
Number of Bits:	24
Part Status:	Active
Packaging:	Tube

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Data Acquisition - Analog to Digital Converters (ADC) are used for a variety of purposes. Commonly known as analog to digital converters, these devices are used to convert real-world sources of analog data, such as temperature, pressure, sound, and light, into digital signals. The AD7714ARZ-5 is a low-power 14-bit analog-to-digital converter (ADC). It is designed for low-power applications and features a programmable reference, two on-chip reference buffers for higher accuracy, four configurable digital filters, 12-bit voltage output conversion, and an internal zero scale calibration.
The AD7714ARZ-5 is optimized for low-power extensions such as cyclic mode, power down, auto-zero and offset calibration, and auto-sleep/wake-up functions. These features make the AD7714ARZ-5 suitable for applications such as mixed-signal data acquisition, where low power consumption on both the device and the external components is essential.
The device includes an analog front-end (AFE) module, a 14-bit sample-and-hold, and a 14-bit successive approximation register (SAR). The AFE module consists of a variable gain amplifier (VGA), switchable between two complementing gains of 1 and 2, and an on-chip reference buffer. The sample-and-hold module is designed to reduce power consumption by integrating a 0.4uf capacitor and two low-skew switches, which provide an overall power consumption of only 15µW when powered from a 2V supply.
The 14-bit SAR consists of a single conversion cycle with a programmable reference and two on-chip reference buffers. The SAR architecture is capable of achieving high-resolution data conversion and fast conversion times, while consuming low power. The internal calibration engine performs an offset and gain calibration to minimize resolution errors associated with the VGA and the SAR. The on-chip digital filters provide significant advantages by allowing the device to filter out noise in the conversion process and reduce data rate without the need for an external anti-aliasing filter.
The AD7714ARZ-5 can operate in single-ended or differential configurations with switches to choose the desired channel configuration. The device is rated for a maximum operating temperature range of -40°C to +85°C and offers a wide range of adjustment ranges, from 0V to 3V in POS or NEG modes, and from 0V to ± 2V in bipolar mode. The output of the device is 12-bit voltage, and is rated for +5V or +2.5V operation, depending on the output range selected.
The AD7714ARZ-5 is well suited for applications such as industrial temperature measurement, automotive diagnostic equipment, and medical instrumentation. The device enables low-power data acquisition with high accuracy, and offers a wide range of configurability and versatility. Flexible time base allows the device to be configured to generate a pulse with an adjustable rate. The programmable reference and configurable filters give users the flexibility to achieve the desired resolution without compromising on power consumption. The internal calibration engine also ensures that the device performs with consistent accuracy over temperature, supply, and process variations.

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