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Name: AD7894ARZ-3
Brand: Analog Devices Inc.
SKU: AD7894ARZ-3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc. AD7894ARZ-3

Part No.:: AD7894ARZ-3

Manufacturer:: Analog Devices Inc.

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

Datasheet:

Description:: IC ADC 14BIT SAR 8SOIC

In Stock:: 3649

Quantity:: Add To Cart

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AD7894ARZ-3 Specifications

Packaging:
Bulk,Tube
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-3 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including AD7894ARZ-3 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-3 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-3 information

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AD7894ARZ-3 Typical application Circuitry

AD7894ARZ-3

The AD7894ARZ-3 is a 14-bit analog-to-digital converter (ADC) renowned for its rapid conversion rate and low power consumption. It operates on a single 5 V power supply and features a serial interface for communication. With a conversion time of 2.3 µs and a throughput rate of 400 kSPS, this ADC is ideal for applications requiring quick and accurate data acquisition.

Application Scenario: Portable Oscilloscope

In the field of portable test equipment, the AD7894ARZ-3 can be employed in a compact oscilloscope. This device is used to measure and display varying voltage signals, making the ADC's precision and speed crucial for capturing fast-changing signals accurately.

Detailed Circuit Design for Portable Oscilloscope

1. Power Supply Considerations:

- Connect the AD7894ARZ-3 VDD pin (pin 16) to a regulated 5 V supply, ensuring stable operation.

- Place decoupling capacitors (0.1 µF and 10 µF) near the AD7894ARZ-3 VDD pin to filter out any noise and provide a clean power supply.

2. Reference Voltage Setup:

- Connect a stable 2.5 V reference voltage to the REF IN pin (pin 15) to define the ADC's input range.

- Add a 1 µF capacitor between the REF IN pin and ground to reduce fluctuations in the reference voltage.

3. Signal Input Interface:

- Connect the input signal to be measured to the VIN pin (pin 14) through a voltage divider or attenuator circuit to scale the signal within the ADC's input range.

- Implement a low-pass filter between the signal source and the VIN pin to eliminate high-frequency noise and prevent aliasing.

4. Digital Communication Configuration:

- Utilize the 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 efficient data transfer.

5. Conversion Control Mechanism:

- Control the CONVST pin (pin 4) with a GPIO pin from the microcontroller to initiate conversions.

- Program the microcontroller to trigger conversions at regular intervals, matching the desired sampling rate of the oscilloscope.

Key Design Considerations:

- Signal Integrity: Focus on maintaining signal integrity through careful PCB layout, minimizing the length of critical traces and using a ground plane to reduce interference.

- Input Signal Conditioning: Design an appropriate input stage to scale and filter the signal, ensuring it falls within the ADC's input range while preserving signal fidelity.

- Power Efficiency: In portable devices, optimizing power consumption is crucial. Use low-power components and implement power-saving modes in the microcontroller.

In this application, the AD7894ARZ-3 ADC plays a vital role in a portable oscilloscope by providing accurate and fast conversion of voltage signals. By addressing key design considerations such as signal integrity, input signal conditioning, and power efficiency, designers can create a compact and reliable device for on-the-go electrical measurements.

AD7894ARZ-3 FAQ

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6. What is the process for return or replacement of AD7894ARZ-3?

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-3 we delivered, we will accept the replacement or return of the AD7894ARZ-3 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-3.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations