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Name: DAC38RF82IAAV
Brand: Texas Instruments
SKU: DAC38RF82IAAV
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 DAC38RF82IAAV

Part No.:: DAC38RF82IAAV

Manufacturer:: Texas Instruments

Package:: 144-FBGA, FCBGA

Datasheet:: DAC38RF82IAAV.pdf

Description:: IC DAC 14BIT V-OUT 144FCBGA

In Stock:: 2533

Quantity:: Add To Cart

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DAC38RF82IAAV Specifications

Package/Case:
144-FBGA, FCBGA
Packaging:
Tray
Series:
-
ProductStatus:
Active
NumberofBits:
14
NumberofD/AConverters:
2
SettlingTime:
1ns (Typ)
OutputType:
Voltage - Buffered
DifferentialOutput:
Yes
DataInterface:
JESD204B
ReferenceType:
External, Internal
Voltage-SupplyAnalog:
1.71V ~ 1.89V
Voltage-SupplyDigital:
0.95V ~ 1.05V
INL/DNL(LSB):
±4, ±3
Architecture:
Current Source
OperatingTemperature:
-40°C ~ 85°C

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DAC38RF82IAAV information

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DAC38RF82IAAV Typical application Circuitry

DAC38RF82IAAV

The DAC38RF82IAAV is a dual-channel, 14-bit, 9 GSPS digital-to-analog converter (DAC) developed by Texas Instruments, designed to deliver high-performance signal synthesis for radio frequency (RF) applications. This advanced DAC is particularly well-suited for use in high-speed data acquisition systems, direct RF synthesis in communication systems, and test and measurement equipment, showcasing versatility in handling a wide range of high-speed signal generation tasks.

Key Features and Parameters:

- Dual 14-Bit Channels: Provides dual-channel capability, allowing for simultaneous output of complex or independent waveforms, enhancing system design flexibility.

- High Sample Rate: With a maximum sample rate of 9 GSPS, it supports high-frequency signal generation, critical for modern RF applications.

- Integrated Complex Digital Modulation: Features integrated digital signal processing capabilities, enabling sophisticated modulation schemes directly within the DAC, reducing external processing requirements.

- Low Power Consumption: Optimized for efficiency, crucial in minimizing heat generation and power usage in high-performance systems.

- Flexible Interface Options: Supports JESD204B interface, facilitating easy integration with other digital components and systems, ensuring compatibility and simplifying design efforts.

Application Scenario: A standout application for the DAC38RF82IAAV is in a direct digital synthesis (DDS) system for generating RF signals within communication equipment, such as a base station transmitter in a cellular network. This scenario highlights the DAC's ability to generate high-frequency signals with precision, a crucial requirement for modern telecommunication systems.

Circuit Design:

Incorporating the DAC38RF82IAAV into a DDS system for a cellular base station requires detailed planning around several critical connections and considerations:

1. Digital Data Input (JESD204B Interface, Pins 1-12): These pins are connected to a digital signal processor (DSP) or FPGA, which sends digital I/Q data to the DAC. The JESD204B interface ensures high-speed, reliable data transfer, essential for maintaining signal integrity at high frequencies.

2. Clock Input (CLK, Pin 13): A high-stability, low-jitter clock source is connected here, providing the timing signal that drives the DAC's internal conversion processes. The quality of this clock signal directly impacts the purity and stability of the generated RF signal.

3. Reset (RST, Pin 14): This pin is used to reset the DAC to a known state upon system startup or in the event of a fault. A microcontroller can control this pin, ensuring the system can quickly recover from any errors.

4. Analog Outputs (OUTA+/OUTA-, OUTB+/OUTB-, Pins 15-18): The DAC's differential analog outputs are connected to a filtering and amplification stage. Proper impedance matching and filter design are crucial here to maintain signal integrity and meet spectral purity requirements.

5. Power Supply and Grounding (VDD, GND, Various Pins): Careful attention must be paid to the power supply design, ensuring clean, stable power to the DAC. Grounding and power decoupling strategies are critical to minimize noise and interference, which could degrade the DAC's performance.

Design Considerations:

- Signal Integrity: Maintaining high-quality signal paths from the DSP/FPGA to the DAC and from the DAC to the output stages is paramount, requiring careful PCB layout and impedance matching.

- Thermal Management: The DAC38RF82IAAV, operating at high speeds, can generate significant heat, necessitating efficient heat dissipation techniques to maintain operational stability.

- Jitter Minimization: The quality of the clock signal is vital; low-jitter clock sources and careful routing minimize phase noise in the generated RF signal, crucial for communication applications.

- Power Supply Noise: Ensuring that the DAC38RF82IAAV receives a clean power supply is essential, as power supply noise can directly affect the quality of the analog output signal.

By addressing these design considerations, the DAC38RF82IAAV can be effectively integrated into a DDS system for a cellular base station, demonstrating its capacity to produce high-quality RF signals necessary for robust and reliable communication networks. This application exemplifies the DAC38RF82IAAV's pivotal role in enabling advanced RF signal generation in telecommunications, underscoring its utility in sophisticated digital-to-analog conversion tasks.

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6. What is the process for return or replacement of DAC38RF82IAAV?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the DAC38RF82IAAV we delivered, we will accept the replacement or return of the DAC38RF82IAAV only when all of the below conditions are fulfilled:

(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 DAC38RF82IAAV.

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

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