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Name: AD7894ARZ-2REEL7
Brand: Analog Devices Inc.
SKU: AD7894ARZ-2REEL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Analog Devices Inc. AD7894ARZ-2REEL7

Part No.:: AD7894ARZ-2REEL7

Manufacturer:: Analog Devices Inc.

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:

Description:: IC ADC 14BIT SAR 8SOIC

In Stock:: 3546

Quantity:: Add To Cart

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AD7894ARZ-2REEL7 Specifications

Packaging:
Tape & Reel (TR)
Series:
-
Product Status:
Active
Number of Bits:
14
Sampling Rate(PerSecond):
200k
Number of Inputs:
1
Input Type:
Single Ended
Data Interface:
SPI
Configuration:
S/H-ADC
Ratio-S/H:ADC:
1:1
Number of A/D Converters:
1
Architecture:
SAR
Reference Type:
External
Voltage-Supply Analog:
5V
Voltage-Supply Digital:
5V
Features:
-
Operating Temperature:
-40°C ~ 85°C

AD7894ARZ-2REEL7 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including AD7894ARZ-2REEL7 price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for AD7894ARZ-2REEL7 to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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AD7894ARZ-2REEL7 information

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AD7894ARZ-2REEL7 Typical application Circuitry

AD7894ARZ-2REEL7

The AD7894ARZ-2REEL7 is a 14-bit, high-speed, low-power, successive approximation analog-to-digital converter (ADC) from Analog Devices. It features a fast conversion time of 2.3 µs, a 5 V single-supply operation, and a serial interface. This ADC is designed for applications that require high precision and fast data acquisition, such as data logging systems, industrial control systems, and medical instrumentation.

Application Scenario: Precision Soil Moisture Measurement in Smart Agriculture

In smart agriculture, precise soil moisture measurement is crucial for optimizing irrigation and ensuring healthy crop growth. The AD7894ARZ-2REEL7 ADC can be employed in a soil moisture sensor system to provide high-resolution and rapid conversion of the sensor's analog output to digital data for analysis and decision-making.

Innovative Circuit Design for Soil Moisture Measurement

1. Power Supply Configuration:

- Supply the ADC with a clean and stable 5 V power source connected to the AD7894ARZ-2REEL7 VDD pin (pin 16).

- Use a combination of a 0.1 µF ceramic capacitor and a 10 µF tantalum capacitor near the VDD pin to filter out any high-frequency noise and stabilize the power supply.

2. Reference Voltage Setup:

- Employ a low-drift, high-precision 2.5 V reference voltage source connected to the REF IN pin (pin 15) to set the AD7894ARZ-2REEL7 ADC's input range.

- Add a 1 µF ceramic bypass capacitor between the REF IN pin and ground to reduce noise on the reference voltage.

3. Sensor Interface:

- Interface the soil moisture sensor's analog output with the VIN pin (pin 14) of the ADC.

- Design a custom low-pass filter with a 10 kΩ resistor and a 1 nF capacitor between the sensor output and the VIN pin to attenuate high-frequency noise and prevent aliasing.

4. Digital Interface Configuration:

- Implement an SPI interface for communication between the ADC and the microcontroller.

- Connect the SDO pin (pin 1), SCLK pin (pin 2), and CS pin (pin 3) to the corresponding SPI pins on the microcontroller for data transfer and synchronization.

5. Conversion Control:

- Utilize a GPIO pin from the microcontroller to control the CONVST pin (pin 4) of the ADC.

- Generate precise timing pulses to initiate conversions at desired intervals, optimizing power consumption and data acquisition rate.

Advanced Design Considerations:

- Signal Integrity: Ensure proper layout techniques, such as short trace lengths and a dedicated ground plane, to maintain signal integrity and reduce electromagnetic interference.

- Calibration: Implement a calibration routine in the microcontroller to compensate for any sensor non-linearity or temperature effects on the ADC's performance.

- Data Processing: Develop an algorithm in the microcontroller to process the ADC's digital output, converting it into meaningful soil moisture levels and triggering irrigation control decisions.

In this sophisticated application of the AD7894ARZ-2REEL7 ADC in smart agriculture, the focus is on achieving high accuracy and reliability in soil moisture measurement. By carefully designing the power supply, reference voltage, sensor interface, and digital communication, along with addressing advanced considerations such as signal integrity and calibration, this ADC can play a pivotal role in optimizing irrigation and enhancing agricultural productivity.

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6. What is the process for return or replacement of AD7894ARZ-2REEL7?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the AD7894ARZ-2REEL7 we delivered, we will accept the replacement or return of the AD7894ARZ-2REEL7 only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of AD7894ARZ-2REEL7.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations