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Name: AD7903BRQZ
Brand: Analog Devices Inc.
SKU: AD7903BRQZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Analog Devices Inc. AD7903BRQZ

Part No.:: AD7903BRQZ

Manufacturer:: Analog Devices Inc.

Package:: 20-SSOP (0.154, 3.90mm Width)

Datasheet:: AD7903BRQZ.pdf

Description:: IC ADC 16BIT SAR 20QSOP

In Stock:: 3894

Quantity:: Add To Cart

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AD7903BRQZ Specifications

Packaging:
Tube
Series:
PulSAR®
Product Status:
Active
Number of Bits:
16
Sampling Rate(PerSecond):
1M
Number of Inputs:
2
Input Type:
Differential
Data Interface:
SPI, DSP
Configuration:
S/H-ADC
Ratio-S/H:ADC:
1:1
Number of A/D Converters:
2
Architecture:
SAR
Reference Type:
External
Voltage-Supply Analog:
2.375V ~ 2.625V
Voltage-Supply Digital:
2.375V ~ 2.625V
Features:
Simultaneous Sampling
Operating Temperature:
-40°C ~ 125°C

AD7903BRQZ this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including AD7903BRQZ 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 AD7903BRQZ 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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AD7903BRQZ information

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AD7903BRQZ Typical application Circuitry

AD7903BRQZ

The dual-channel, 16-bit analog-to-digital converter (ADC) AD7903BRQZ is renowned for its low power consumption and excellent precision. With a serial port for data exchange, this ADC operates within a 2.7 V to 5.5 V supply voltage range. It is appropriate for applications needing accurate and quick analog-to-digital conversion because of its quick conversion time and throughput rate of up to 1 MSPS (mega-samples per second) per channel.

Application Scenario: Precision Sensor Interface in Industrial Control Systems

In industrial control systems, the AD7903BRQZ can be used to interface with precision sensors, such as temperature and pressure sensors, to monitor and control industrial processes accurately.

Circuit Design for Precision Sensor Interface

1. Power Supply Configuration:

- Connect the VDD pin (pin 24) of the AD7903BRQZ to a regulated power supply within the range of 2.7 V to 5.5 V.

- Place decoupling capacitors (0.1 µF ceramic and 10 µF tantalum) near the VDD pin of the AD7903BRQZ for noise filtering and power stability.

2. Reference Voltage Setup:

- Use a high-precision external reference voltage connected to the REF pin (pin 20) of the AD7903BRQZ to set the ADC's input range.

- Attach a 1 µF capacitor between the REF pin of the AD7903BRQZ and ground to stabilize the reference voltage.

3. Sensor Signal Integration:

- Interface the analog outputs of the sensors with the VIN1+ pin (pin 22), VIN1- pin (pin 21), VIN2+ pin (pin 11), and VIN2- pin (pin 10) of the AD7903BRQZ through differential input configurations to maximize signal integrity and reduce noise.

- Design low-pass filters between the sensor outputs and the VIN pins of the AD7903BRQZ to eliminate high-frequency noise and ensure accurate measurements.

4. Digital Communication Configuration:

- Establish an SPI interface for communication between the AD7903BRQZ and the microcontroller or control unit of the industrial system.

- Connect the SDO pin (pin 1) and SDI pin (pin 2) of the AD7903BRQZ to the corresponding SPI pins on the microcontroller or control unit for efficient data transfer.

5. Conversion Control Mechanism:

- Manage the CONVST pin (pin 3) of the AD7903BRQZ with a GPIO pin from the microcontroller or control unit to initiate the conversion process.

- Program the microcontroller or control unit to trigger ADC conversions at regular intervals, aligning with the desired sensor sampling rate.

Key Design Considerations:

- Signal Integrity: Ensure signal integrity in the differential input configuration by using matched trace lengths and a ground plane to reduce noise and interference.

- Sensor Compatibility: Ensure compatibility between the sensors and the AD7903BRQZ by implementing appropriate signal conditioning circuits that scale the sensor output to the ADC's input range.

- Power Efficiency: Optimize the power consumption of the sensor interface system, especially important in industrial applications where energy efficiency is a concern, by using low-power components and power-saving modes.

In this application, the AD7903BRQZ ADC is integral to a precision sensor interface in industrial control systems, providing accurate and fast conversion of sensor signals for monitoring and controlling industrial processes. By addressing key design considerations such as signal integrity, sensor compatibility, and power efficiency, designers can create an effective system for precise and reliable process control in various industrial settings.

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6. What is the process for return or replacement of AD7903BRQZ?

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 AD7903BRQZ we delivered, we will accept the replacement or return of the AD7903BRQZ 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 AD7903BRQZ.

(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