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Name: AD7903BRQZ-RL7
Brand: Analog Devices Inc.
SKU: AD7903BRQZ-RL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Analog Devices Inc. AD7903BRQZ-RL7

Part No.:: AD7903BRQZ-RL7

Manufacturer:: Analog Devices Inc.

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

Datasheet:: AD7903BRQZ-RL7.pdf

Description:: IC ADC 16BIT SAR 20QSOP

In Stock:: 2338

Quantity:: Add To Cart

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AD7903BRQZ-RL7 Specifications

Packaging:
Tape & Reel (TR),Bulk
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-RL7 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including AD7903BRQZ-RL7 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-RL7 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-RL7 information

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AD7903BRQZ-RL7 Typical application Circuitry

AD7903BRQZ-RL7

The AD7903BRQZ-RL7 is a high-precision, dual-channel, 16-bit analog-to-digital converter (ADC) known for its fast conversion rate and low power consumption. Operating with a supply voltage range of 2.7 V to 5.5 V, this ADC features a serial interface for data communication. It boasts a rapid conversion time and a throughput rate of up to 1 MSPS (mega-samples per second) per channel, making it suitable for applications requiring accurate and quick analog-to-digital conversion.

Application Scenario: Multi-Channel Data Logging in Environmental Monitoring Systems

In environmental monitoring systems, the AD7903BRQZ-RL7 can be used to log data from multiple sensors, such as temperature, humidity, and air quality sensors, to monitor environmental conditions accurately.

Circuit Design for Multi-Channel Data Logging System

1. Power Supply Configuration:

- Connect the VDD pin (pin 24) of the AD7903BRQZ-RL7 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-RL7 for noise filtering and power stability.

2. Reference Voltage Setup:

- Utilize a precision external reference voltage connected to the REF pin (pin 20) of the AD7903BRQZ-RL7 to set the ADC's input range.

- Attach a 1 µF capacitor between the REF pin of the AD7903BRQZ-RL7 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-RL7 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-RL7 to eliminate high-frequency noise and ensure accurate measurements.

4. Digital Communication Configuration:

- Establish an SPI interface for communication between the AD7903BRQZ-RL7 and the microcontroller or data logger of the environmental monitoring system.

- Connect the SDO pin (pin 1) and SDI pin (pin 2) of the AD7903BRQZ-RL7 to the corresponding SPI pins on the microcontroller or data logger for efficient data transfer.

5. Conversion Control Mechanism:

- Manage the CONVST pin (pin 3) of the AD7903BRQZ-RL7 with a GPIO pin from the microcontroller or data logger to initiate the conversion process.

- Program the microcontroller or data logger to trigger ADC conversions at regular intervals, aligning with the desired sampling rate for environmental data logging.

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-RL7 by implementing appropriate signal conditioning circuits that scale the sensor output to the ADC's input range.

- Data Logging Efficiency: Optimize the data logging efficiency by programming the microcontroller or data logger to manage multiple channels effectively and store data in an organized manner.

In this application, the AD7903BRQZ-RL7 ADC is integral to a multi-channel data logging system in environmental monitoring, providing accurate and fast conversion of sensor signals for real-time monitoring of environmental conditions. By addressing key design considerations such as signal integrity, sensor compatibility, and data logging efficiency, designers can create an effective system for comprehensive environmental monitoring.

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6. What is the process for return or replacement of AD7903BRQZ-RL7?

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(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-RL7.

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

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