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Name: DAC8734SPFBR
Brand: Texas Instruments
SKU: DAC8734SPFBR
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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Texas Instruments DAC8734SPFBR

Part No.:: DAC8734SPFBR

Manufacturer:: Texas Instruments

Package:: 48-TQFP

Datasheet:: DAC8734SPFBR.pdf

Description:: IC DAC 16BIT V-OUT 48TQFP

In Stock:: 2055

Quantity:: Add To Cart

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DAC8734SPFBR Specifications

Package/Case:
48-TQFP
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
NumberofBits:
16
NumberofD/AConverters:
4
SettlingTime:
8µs (Typ)
OutputType:
Voltage - Buffered
DifferentialOutput:
No
DataInterface:
SPI
ReferenceType:
External
Voltage-SupplyAnalog:
4.75V ~ 24V, -4.75V ~ -18V
Voltage-SupplyDigital:
2.7V ~ 5.5V
INL/DNL(LSB):
±1 (Max), ±1 (Max)
Architecture:
R-2R
OperatingTemperature:
-40°C ~ 105°C

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DAC8734SPFBR information

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DAC8734SPFBR Typical application Circuitry

DAC8734SPFBR

The DAC8734SPFBR is a high-performance, quad-channel, 16-bit precision digital-to-analog converter (DAC) developed by Texas Instruments. This advanced chip excels in converting digital signals into precise analog voltages across four independent channels, making it highly suitable for a wide range of applications that require accurate and simultaneous control over multiple analog outputs. Notably, it features an integrated precision reference, flexible serial interfaces including SPI, low power consumption, and a wide operating voltage range. These characteristics render the DAC8734SPFBR ideal for industrial automation systems, precision instrumentation, programmable logic controllers (PLCs), and data acquisition systems where detailed analog output is critical.

Key Features and Parameters:

- Quad 16-bit DAC Channels: Allows for the conversion of digital inputs to four separate, accurate analog outputs, facilitating complex control schemes.

- Integrated Precision Reference: Provides a stable reference for DAC outputs, enhancing accuracy and consistency.

- Serial Peripheral Interface (SPI): Enables efficient communication with microcontrollers or processors, ensuring fast and reliable data transfer.

- Low Power Consumption: Optimizes energy usage, suitable for power-sensitive applications.

- Wide Operating Voltage Range: Supports a variety of system voltages, adding versatility to system design.

Application Scenario: An exemplary use case for the DAC8734SPFBR is in the design of a precision analog output module for a PLC system, where it generates various control signals for industrial processes.

Detailed Circuit Design:

Incorporating the DAC8734SPFBR into a precision analog output module for a PLC involves careful consideration of the following aspects:

1. SPI Communication Configuration (SDI, Pin 7; SCLK, Pin 8; SYNC, Pin 6): Connect these pins to the SPI bus of the PLC's CPU. This setup is crucial for transmitting digital control commands to the DAC8734SPFBR, which then translates these commands into analog voltages for controlling various industrial processes.

2. Analog Outputs for Process Control (VOUTA, Pin 15; VOUTB, Pin 14; VOUTC, Pin 13; VOUTD, Pin 12): These pins are connected to the inputs of actuators or sensors in the industrial process. The DAC8734SPFBR's capability to provide distinct and precise voltages on each channel allows for fine regulation of multiple process parameters.

3. Power Supply and Grounding (AVDD, Pin 24; AGND, Pin 23): Supplying a stable and noise-free power source to AVDD is critical for optimal DAC operation. Proper grounding through AGND is essential to minimize noise and ensure the accuracy of the analog outputs.

4. Integrated Reference Voltage Setup (REFIN/OUT, Pin 20): Utilizing the DAC8734SPFBR's integrated precision reference voltage is key to achieving stable and accurate output voltages. Ensuring that REFIN/OUT is properly configured and stable is crucial for the module's performance.

5. Output Filtering and Stability (VOUTA-D): Implementing low-pass filters on the outputs may be necessary to smooth the analog voltages and remove any potential high-frequency noise, ensuring precise and stable control over the industrial processes.

Design Considerations:

- Isolation Between Digital and Analog Sections: It's critical to physically and electrically isolate the DAC8734SPFBR's digital communication interface from the analog output paths to prevent digital noise from affecting the analog signals.

- Decoupling Capacitors for Power Stability: Placing decoupling capacitors close to the DAC8734SPFBR's power supply pins is vital for filtering out noise and stabilizing the power supply, ensuring consistent DAC performance.

- Thermal Management: While the DAC8734SPFBR is designed for low power consumption, attention to thermal management within the circuit design is beneficial to prevent potential issues related to heat, especially in continuous operation.

- Reference Voltage Accuracy: The precision of the analog output module heavily relies on the stability and accuracy of the integrated reference voltage. Ensuring the DAC8734SPFBR's reference voltage remains stable and accurate is fundamental for achieving reliable and precise control signals.

By employing the DAC8734SPFBR in a precision analog output module for a PLC, one can exploit its quad-channel, high-resolution output capability to produce accurate and nuanced control over multiple process parameters, demonstrating its utility and precision in applications requiring detailed and reliable analog signal generation.

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6. What is the process for return or replacement of DAC8734SPFBR?

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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 DAC8734SPFBR.

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

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