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Name: AD7938BCPZ-REEL7
Brand: Analog Devices Inc.
SKU: AD7938BCPZ-REEL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Analog Devices Inc. AD7938BCPZ-REEL7

Part No.:: AD7938BCPZ-REEL7

Manufacturer:: Analog Devices Inc.

Package:: 32-VFQFN Exposed Pad, CSP

Datasheet:: AD7938BCPZ-REEL7.pdf

Description:: IC ADC 12BIT SAR 32LFCSP

In Stock:: 19022

Quantity:: Add To Cart

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AD7938BCPZ-REEL7 Specifications

Packaging:
Tape & Reel (TR),Bulk
Series:
-
Product Status:
Active
Number of Bits:
12
Sampling Rate(PerSecond):
1.5M
Number of Inputs:
4, 7, 8
Input Type:
Differential, Pseudo-Differential, Single Ended
Data Interface:
Parallel
Configuration:
MUX-S/H-ADC
Ratio-S/H:ADC:
1:1
Number of A/D Converters:
1
Architecture:
SAR
Reference Type:
External, Internal
Voltage-Supply Analog:
2.7V ~ 5.25V
Voltage-Supply Digital:
2.7V ~ 5.25V
Features:
-
Operating Temperature:
-40°C ~ 85°C

AD7938BCPZ-REEL7 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including AD7938BCPZ-REEL7 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 AD7938BCPZ-REEL7 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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AD7938BCPZ-REEL7 information

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AD7938BCPZ-REEL7 Typical application Circuitry

AD7938BCPZ-REEL7

The AD7938BCPZ-REEL7 is a high-speed, 8-channel, 12-bit analog-to-digital converter (ADC) known for its low power consumption and versatile input multiplexing capabilities. It operates with a single power supply ranging from 2.7 V to 5.5 V and features a serial interface for data communication. With a conversion time of just 1.5 µs and a throughput rate of 666 kSPS, this ADC is ideal for applications requiring rapid and precise multi-channel analog-to-digital conversion.

Application Scenario: Multi-Parameter Patient Monitoring System

In healthcare, the AD7938BCPZ-REEL7 can be used in a multi-parameter patient monitoring system to digitize analog signals from various medical sensors, such as ECG, blood pressure, temperature, and SpO2 sensors, enabling comprehensive monitoring of a patient's vital signs.

Circuit Design for Multi-Parameter Patient Monitoring System

1. Power Supply Configuration:

- Connect the VDD pin (pin 32) of the AD7938BCPZ-REEL7 to a regulated 3.3 V power supply.

- Place decoupling capacitors (0.1 µF ceramic and 10 µF tantalum) near the VDD pin to ensure a stable power supply and reduce noise.

2. Reference Voltage Setup:

- Use the internal reference voltage of the AD7938BCPZ-REEL7 by connecting the REF IN pin (pin 16) to the VDD pin, ensuring consistent ADC performance.

3. Analog Input Configuration:

- Connect the analog outputs of the medical sensors to the VIN0 to VIN7 pins (pins 24 to 31, respectively) through signal conditioning circuits to match the ADC's input range and filter out noise.

4. Digital Communication Interface:

- Establish an SPI interface for communication between the AD7938BCPZ-REEL7 and the microcontroller or processing unit of the patient monitoring system.

- Connect the SDO pin (pin 1), SDI pin (pin 2), and SCLK pin (pin 3) to the corresponding SPI pins on the microcontroller or processing unit for efficient data transfer.

5. Conversion Control Mechanism:

- Control the CONVST pin (pin 4) with a GPIO pin from the microcontroller or processing unit to initiate the conversion process.

- Program the microcontroller or processing unit to trigger ADC conversions at regular intervals, aligning with the desired sampling rate for patient monitoring.

Key Design Considerations:

- Signal Conditioning: Ensure proper conditioning of the sensor signals to match the input range of the AD7938BCPZ-REEL7 and to filter out unwanted noise.

- Power Efficiency: Optimize power consumption by using low-power components and implementing power-saving modes in the microcontroller or processing unit, especially important in battery-powered patient monitoring systems.

- Data Integrity: Implement error-checking protocols in the digital communication interface to ensure the integrity of the digitized data.

- Isolation: Provide adequate isolation between the patient and the electronic circuitry to ensure safety and prevent electrical hazards.

In this application, the AD7938BCPZ-REEL7 ADC is integral to a multi-parameter patient monitoring system, providing fast and accurate conversion of medical sensor signals for comprehensive monitoring of a patient's vital signs. By addressing key design considerations such as signal conditioning, power efficiency, data integrity, and isolation, designers can create an effective and safe patient monitoring system for healthcare applications.

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6. What is the process for return or replacement of AD7938BCPZ-REEL7?

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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 AD7938BCPZ-REEL7.

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