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Name: AD7788BRMZ-REEL
Brand: Analog Devices Inc.
SKU: AD7788BRMZ-REEL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Analog Devices Inc. AD7788BRMZ-REEL

Part No.:: AD7788BRMZ-REEL

Manufacturer:: Analog Devices Inc.

Package:: 10-TFSOP, 10-MSOP (0.118, 3.00mm Width)

Datasheet:: AD7788BRMZ-REEL.pdf

Description:: IC ADC 16BIT SIGMA-DELTA 10MSOP

In Stock:: 3369

Quantity:: Add To Cart

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AD7788BRMZ-REEL Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
Product Status:
Active
Number of Bits:
16
Sampling Rate(PerSecond):
16.6
Number of Inputs:
1
Input Type:
Differential
Data Interface:
SPI, DSP
Configuration:
ADC
Ratio-S/H:ADC:
-
Number of A/D Converters:
1
Architecture:
Sigma-Delta
Reference Type:
External
Voltage-Supply Analog:
2.5V ~ 5.25V
Voltage-Supply Digital:
2.5V ~ 5.25V
Features:
-
Operating Temperature:
-40°C ~ 85°C

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AD7788BRMZ-REEL information

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AD7788BRMZ-REEL Typical application Circuitry

AD7788BRMZ-REEL

A low-power, 24-bit sigma-delta analog-to-digital converter (ADC) with high precision is the AD7788BRMZ-REEL. It is intended for use in high-precision data acquisition applications where power efficiency is critical. It is perfect for sensor interface, portable instrumentation, and battery-powered devices. With one differential or two single-ended input channels, the AD7788BRMZ-REEL is adaptable to a wide range of sensing applications.

Key Specifications

1. Resolution: 24-bit sigma-delta ADC, ensuring high precision in data conversion.

2. Input Channels: One differential or two single-ended input channels, offering flexibility in sensor interfacing.

3. Data Rate: Programmable data rate up to 16.7 Hz, allowing users to optimize between speed and power consumption.

4. Power Supply: Operates from a single 3.3V supply, suitable for battery-powered applications.

5. Interface: Serial peripheral interface (SPI) for easy integration with microcontrollers.

6. Power Modes: Multiple power-down modes for enhanced power management.

Application Scenario: Portable Medical Device

In a portable medical device, such as a wearable health monitor, the AD7788BRMZ-REEL can be used to acquire precise biometric data from sensors measuring parameters like heart rate, temperature, or blood pressure. Its low power consumption and high precision make it ideal for continuous monitoring in battery-operated devices.

Detailed Circuit Connection for Portable Medical Device

1. Power Supply Provision: Supply a stable 3.3V power to the VDD pin (pin 16) of the AD7788BRMZ-REEL. Utilize a low-noise linear regulator and place bypass capacitors near the pin to reduce supply noise, which is critical for maintaining the ADC's accuracy.

2. Reference Voltage Configuration: Connect a precision 2.5V reference voltage source to the REFIN+/REFIN- pins (pins 5 and 6). The accuracy of the reference voltage directly influences the conversion precision. Add decoupling capacitors to stabilize the reference voltage.

3. Sensor Connection: For differential input, connect the sensor outputs to the AIN+/AIN- pins (pins 7 and 8). If the sensor is distant from the AD7788BRMZ-REEL, use shielded cables to minimize noise pickup.

4. SPI Communication Setup: Link the AD7788BRMZ-REEL to a microcontroller via the SPI pins: SCLK (pin 2), DIN (pin 3), DOUT (pin 4), and \CS (pin 1). Keep the SPI bus traces short and isolated from noisy components to prevent signal degradation.

5. Internal Clock Usage: The AD7788BRMZ-REEL has an integrated clock, removing the need for an external clock source, simplifying the design.

6. Grounding Strategy: Implement a solid ground plane on the PCB to serve as a common return path for both analog and digital signals. Proper grounding is essential to minimize ground loop areas and reduce the impact of noise on ADC performance.

Design Considerations for Optimal Functionality

- Signal Integrity: Apply appropriate routing and shielding techniques to protect the analog input signals from external noise sources, especially in a noisy medical environment.

- Power Management: Effectively use the AD7788BRMZ-REEL's power-down modes in battery-operated applications to maximize battery life.

- Thermal Considerations: Ensure adequate heat dissipation pathways in the design to prevent overheating and ensure stable operation of the ADC.

- PCB Layout: Pay careful attention to the PCB layout. Separate analog and digital sections, and route digital lines away from analog inputs to prevent digital noise from affecting the ADC's performance.

By incorporating these design elements and connections, the AD7788BRMZ-REEL can be effectively utilized in a portable medical device, providing precise and reliable data acquisition while maintaining low power consumption, making it an ideal choice for a wide range of medical monitoring applications.

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6. What is the process for return or replacement of AD7788BRMZ-REEL?

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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 AD7788BRMZ-REEL.

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

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