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Name: DAC7821IPW
Brand: Texas Instruments
SKU: DAC7821IPW
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 DAC7821IPW

Part No.:: DAC7821IPW

Manufacturer:: Texas Instruments

Package:: 20-TSSOP (0.173, 4.40mm Width)

Datasheet:: DAC7821IPW.pdf

Description:: IC DAC 12BIT A-OUT 20TSSOP

In Stock:: 15136

Quantity:: Add To Cart

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DAC7821IPW Specifications

Package/Case:
20-TSSOP (0.173, 4.40mm Width)
Packaging:
Bulk,Tube
Series:
-
ProductStatus:
Active
NumberofBits:
12
NumberofD/AConverters:
1
SettlingTime:
200ns
OutputType:
Current - Unbuffered
DifferentialOutput:
Yes
DataInterface:
Parallel
ReferenceType:
External
Voltage-SupplyAnalog:
2.7V ~ 5.5V
Voltage-SupplyDigital:
2.7V ~ 5.5V
INL/DNL(LSB):
±1 (Max), ±1 (Max)
Architecture:
R-2R
OperatingTemperature:
-40°C ~ 125°C

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DAC7821IPW information

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Basic introduction and simple engineering application of DAC7821IPW

DAC7821IPW is a 12-bit digital-to-analog converter (DAC) commonly used in electronic circuits for converting digital signals into analog voltage outputs. It offers high accuracy and low power consumption, making it suitable for a wide range of applications in instrumentation, audio systems, and industrial control.

Application Scenario:

In this project, we will explore the application of DAC7821IPW in a simple voltage output circuit. The DAC will be controlled by a microcontroller to generate different analog voltages, which can be utilized for tasks such as waveform generation, sensor calibration, or motor speed control.

Circuit Design:

To build a voltage output circuit using DAC7821IPW, follow these steps:

1. Microcontroller Connection:

Connect the digital output pins of a microcontroller, such as an Arduino or STM32, to the serial interface pins of DAC7821IPW (commonly labeled as DIN, SCLK, and SYNC). These pins will be used to send digital signals to the DAC to specify the desired output voltage.

2. DAC Configuration:

Configure the microcontroller to send appropriate digital values to the DAC to produce the desired analog voltage output. Since DAC7821IPW is a 12-bit DAC, it can generate analog voltages with a resolution of 1 part in 4096 steps, ranging from 0V to the reference voltage (Vref) provided to the DAC.

3. Output Amplification:

If necessary, amplify the analog voltage output using an operational amplifier (op-amp) to achieve the desired voltage range or current capability. Ensure proper biasing and feedback configurations for stable and accurate amplification.

4. Load Connection:

Connect the output of the DAC or the amplified voltage to the load or the target device requiring the analog voltage signal. Ensure proper isolation and protection measures, if needed, to prevent damage to the DAC or the load.

5. Power Supply:

Provide a stable and clean power supply to DAC7821IPW and the microcontroller to ensure reliable operation. Use decoupling capacitors and voltage regulators to filter out noise and fluctuations from the power source.

Experiment Steps:

1. Connect the digital interface pins of DAC7821IPW (DIN, SCLK, SYNC) to the corresponding output pins of the microcontroller.

2. Configure the microcontroller to send digital values representing different analog voltages to the DAC.

3. Connect the output of DAC7821IPW to a voltmeter or an oscilloscope to measure the analog voltage output.

4. Send different digital values from the microcontroller to the DAC and observe the corresponding changes in the analog voltage output.

5. Optionally, amplify the analog voltage output using an op-amp and observe the amplified voltage using a voltmeter or oscilloscope.

Considerations:

- Resolution: Consider the resolution of the DAC and the required accuracy of the analog voltage output for the application.

- Reference Voltage: Ensure that the reference voltage provided to the DAC is stable and accurate to achieve precise analog outputs.

- Output Range: Verify that the DAC can generate analog voltages within the required voltage range for the application.

- Signal Integrity: Minimize noise and interference in the digital and analog signal paths to maintain signal integrity and accuracy.

- Calibration: Calibrate the DAC if necessary to compensate for any non-linearities or offset errors in the analog output.

DAC7821IPW FAQ

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6. What is the process for return or replacement of DAC7821IPW?

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 DAC7821IPW we delivered, we will accept the replacement or return of the DAC7821IPW 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 DAC7821IPW.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations