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Name: AD7730LBRUZ
Brand: Analog Devices Inc.
SKU: AD7730LBRUZ
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. AD7730LBRUZ

Part No.:: AD7730LBRUZ

Manufacturer:: Analog Devices Inc.

Package:: 24-TSSOP (0.173, 4.40mm Width)

Datasheet:: AD7730LBRUZ.pdf

Description:: IC AFE 1 CHAN 24BIT 24TSSOP

In Stock:: 2382

Quantity:: Add To Cart

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AD7730LBRUZ Typical application Circuitry

AD7730LBRUZ

The AD7730LBRUZ is a high-precision, low-noise analog-to-digital converter (ADC) specifically designed for weighing scales and industrial measurement applications. This ADC features a 24-bit Σ-Δ (sigma-delta) conversion technique, offering high-resolution measurements and is optimized for direct interfacing to external low-level voltage signals and sensors such as pressure sensors, thermocouples, and load cells.

Application Scenarios

The AD7730LBRUZ is ideal for:

- High-precision weighing scales

- Industrial process control systems

- Medical equipment monitoring

- Temperature and pressure measurement systems

Parameter Features

Key features of the AD7730LBRUZ include:

- 24-bit resolution with a sigma-delta ADC

- Programmable gain amplifier for signal conditioning

- On-chip calibration and buffering

- Low noise performance suitable for high-precision applications

- Serial interface for communication with microcontrollers or DSPs

Example Application Scenario: Precision Weighing Scale

Here's a detailed design using the AD7730LBRUZ in a precision weighing scale:

Power Supply Connection

Firstly, connect a stable 5V power supply to the AVDD (pin 24) and DVDD (pin 23) for analog and digital operations, respectively. Ground connections must be made to AGND (pin 1) and DGND (pin 22) to ensure a clean reference for both analog and digital circuits.

Sensor Interface

Secondly, connect the output of the load cell (weighing sensor) to the analog input pins AIN1- (pin 3) and AIN1+ (pin 4) of the AD7730LBRUZ. It is critical to use shielded twisted-pair wires to minimize noise and interference in the signal from the load cell to the ADC.

Reference Voltage Setup

Thirdly, a precise reference voltage is essential for accurate ADC conversions. Attach pins 5 and 6 of the REF IN+ and REF IN- to a steady reference voltage. The necessary measurement range and precision determine the reference voltage to use.

Digital Interface Configuration

Fourthly, connect the serial interface pins of the AD7730LBRUZ, including SCLK (Serial Clock, pin 9), MISO (Master In Slave Out, pin 8), MOSI (Master Out Slave In, pin 7), and CS (Chip Select, pin 10), to the corresponding SPI pins of a microcontroller or digital signal processor. This setup enables digital communication for data exchange and configuration settings.

Filter and Gain Settings

Lastly, configure the on-chip filter and programmable gain settings through the serial interface to optimize the ADC's performance for the specific application. This includes setting the gain to match the load cell's output range and adjusting the filter to balance the trade-off between data rate and noise reduction.

Design Considerations

When integrating the AD7730LBRUZ into a circuit, several factors must be considered:

- Power Supply Quality: Utilize a low-noise, stable power supply for both the analog and digital sections to minimize ADC conversion errors.

- Shielding and Layout: Carefully plan the PCB layout to separate analog and digital sections, minimizing noise coupling. Use shielding and twisted-pair cables for critical signal connections.

- Reference Voltage Stability: To guarantee precise measurements, pick a reference voltage source with high precision and stability.

- Calibration: Implement a calibration procedure to compensate for system offsets and scale factor errors, enhancing measurement accuracy.

By following these detailed design guidelines and addressing the key considerations mentioned, the AD7730LBRUZ can be effectively utilized in designing a high-precision weighing scale, ensuring accurate and reliable measurement capabilities suitable for industrial and commercial applications.

AD7730LBRUZ information

AD7730LBRUZ Specifications

Package/Case:
24-TSSOP (0.173, 4.40mm Width)
Packaging:
Bulk,Tube
Series:
-
ProductStatus:
Active
NumberofBits:
24
NumberofChannels:
1
Power(Watts):
125 mW
Voltage-SupplyAnalog:
5V
Voltage-SupplyDigital:
2.7V ~ 5.25V
MountingType:
Surface Mount

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6. What is the process for return or replacement of AD7730LBRUZ?

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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 AD7730LBRUZ.

(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