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Name: DAC5681ZIRGCT
Brand: Texas Instruments
SKU: DAC5681ZIRGCT
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 DAC5681ZIRGCT

Part No.:: DAC5681ZIRGCT

Manufacturer:: Texas Instruments

Package:: 64-VFQFN Exposed Pad

Datasheet:: DAC5681ZIRGCT.pdf

Description:: IC DAC 16BIT A-OUT 64VQFN

In Stock:: 169

Quantity:: Add To Cart

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DAC5681ZIRGCT Specifications

Package/Case:
64-VFQFN Exposed Pad
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
NumberofBits:
16
NumberofD/AConverters:
1
SettlingTime:
10.4ns (Typ)
OutputType:
Current - Unbuffered
DifferentialOutput:
Yes
DataInterface:
LVDS - Parallel
ReferenceType:
External, Internal
Voltage-SupplyAnalog:
3V ~ 3.6V
Voltage-SupplyDigital:
1.7V ~ 1.9V
INL/DNL(LSB):
±4, ±2
Architecture:
Current Sink
OperatingTemperature:
-40°C ~ 85°C

DAC5681ZIRGCT this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including DAC5681ZIRGCT 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 DAC5681ZIRGCT 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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DAC5681ZIRGCT information

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DAC5681ZIRGCT Typical application Circuitry

DAC5681ZIRGCT

The DAC5681ZIRGCT is a high-performance, 16-bit, 1 GSPS (Giga Samples Per Second) digital-to-analog converter (DAC) developed by Texas Instruments. This DAC is designed for applications requiring high-speed data conversion with a high level of signal fidelity, making it particularly well-suited for use in wireless communication infrastructure, direct digital synthesis (DDS) systems, radar and satellite communications, and high-speed test and measurement equipment. Its high sample rate and resolution enable the generation of wideband signals with excellent dynamic performance, essential for advanced signal processing applications.

Key Features and Parameters:

- 16-Bit Resolution: Offers high precision in the analog output, critical for generating detailed and complex waveforms.

- 1 GSPS Sampling Rate: Supports the creation of high-frequency signals, suitable for RF and microwave applications, providing significant bandwidth.

- Selectable 2x Interpolation Filter: Includes an onboard interpolation filter, facilitating the generation of higher frequency signals from lower-rate digital inputs and simplifying system design.

- LVDS (Low Voltage Differential Signaling) Data Interface: Ensures high-speed data transmission with reduced noise susceptibility, essential for maintaining signal integrity in high-speed systems.

- Single 3.3V Power Supply Operation: Simplifies power supply requirements, enhancing compatibility with a wide range of digital systems and reducing system complexity.

Application Scenario: An exemplary application of the DAC5681ZIRGCT is in a direct digital synthesis (DDS) system for generating complex RF waveforms used in radar systems. This scenario demonstrates the DAC's ability to accurately produce high-frequency signals that can be precisely controlled and modulated to meet the stringent requirements of radar signal processing.

Circuit Design:

Incorporating the DAC5681ZIRGCT into a DDS system for radar applications involves meticulous planning around key connections and design considerations:

1. LVDS Digital Data Inputs (D0 to D15, Pins 8-23): These pins receive the digital waveform data from an FPGA or DSP. The use of LVDS signaling reduces noise and allows for high-speed data transmission. Impedance matching and minimizing the trace length are crucial for maintaining signal integrity.

2. Clock Input (CLK+, CLK-, Pins 4, 5): A high-quality, low-jitter clock source is connected to these differential inputs to drive the DAC's internal sampling process. The clock's stability and purity are vital, as they directly impact the output signal's quality.

3. Interpolation Filter Selection (IFSEL, Pin 6): This pin is used to select the onboard interpolation filter mode (bypassed or 2x), depending on the desired output frequency and the input data rate. Proper configuration here can simplify the system design by reducing the need for external filtering.

4. Analog Output (IOUTP, IOUTN, Pins 32, 33): The differential analog output is connected to a bandpass or low-pass filter to remove undesired harmonics before being sent to the rest of the radar system's signal chain. This filtering is crucial for achieving clean signal transmission.

5. Power Supply and Grounding (AVDD, DVDD, AGND, DGND, Pins 1-3, 24-31, 34-36): A stable and noise-free power supply is crucial for optimal performance. Separate power supply lines for analog and digital sections, along with dedicated grounding, help minimize noise coupling.

Design Considerations:

- Thermal Management: Effective cooling or heat dissipation strategies must be implemented to manage the heat generated by the DAC5681ZIRGCT at high operation rates, ensuring stable performance.

- Power Supply Noise: Clean power supplies are critical. The use of low-noise LDOs, switching regulators with sufficient filtering, and placing decoupling capacitors close to the power pins can help minimize supply noise.

- Signal Integrity: High-speed digital and analog signal integrity must be preserved. Differential signaling, controlled impedance traces, and strategic PCB layout can mitigate signal degradation.

- Clock Signal Quality: A high-quality clock source with minimal jitter is essential for maintaining the fidelity of the analog output. A phase-locked loop (PLL) or a crystal oscillator with excellent phase noise characteristics is recommended.

By adhering to these design principles, the DAC5681ZIRGCT can be effectively integrated into a DDS system for radar applications, showcasing its ability to generate precise, high-frequency RF waveforms. This application emphasizes the DAC5681ZIRGCT's critical role in advanced signal processing tasks, highlighting its capacity for high-speed, high-resolution digital-to-analog conversion in complex systems.

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6. What is the process for return or replacement of DAC5681ZIRGCT?

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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 DAC5681ZIRGCT.

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

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