Digital-to-Analog D/A Performance | Texas Instruments DEM-DAI3793A

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Measurements for Dynamic Characteristics

5.4.1 Digital-to-Analog (D/A) Performance

Measurement path: 01.Line Output and Headphone Output

csv file: 01_DAC_Line_Output_and_Headphone_Output.csv

Table 5-1. D/A Line Output Parameters

Power Supply	Parameter	Filter Setting		RL (kΩ)	LOL	LOR
3.3V	THD+N (0dBFS at 1kHz)	400Hz—20kHz	AES-17	10	0.007%	0.008%
	SNR (BPZ input)	22Hz—20kHz	SPCL +	10	93.1dB	93.0dB
		A-weighting
	DR (–60dBFS input)	22Hz—20kHz	SPCL +	10	93.1dB	92.9dB
		A-weighting
	Channel Separation	22Hz—20kHz	AES-17	10	90.5dB	90.4dB
	(BPZ input for target
	channel)

Table 5-2. 16Ω Headphone Output Inserted in Headphone Jack J6

Power Supply	Parameter	Filter Setting		RL (Ω)	HPOL	HPOR
3.3V	THD+N (40mW, HP	400Hz—20kHz	AES-17	16	0.028%	0.027%
	volume = –1dB)
	SNR (BPZ input)	22Hz—20kHz	SPCL +	16	93.1dB	93.0dB
		A-weighting
	DR (–60dBFS input)	22Hz—20kHz	SPCL +	16	93.4dB	93.1dB
		A-weighting

To obtain the performance results shown in Table 5-1and Table 5-2, the speaker module should be powered down, and other functions should be set with these parameters:

∙Speaker Amp: Disabled

∙ADC L-channel and ADC R-channel: Disabled

∙ALC: Off

∙Volume: 0dB

∙Analog mixing: Disabled

∙RL = 10kΩ for the line output

∙RL = 16Ω inserted in the J6 headphone jack for the headphone output

The bundled .csv file automatically sets the device to these conditions.

Note: The headphone volume should be changed from 0dB to –1dB and the signal input level of the Audio Precision analyzer should be changed to 40mW output power when THD+N is measured at 16Ω.

See Appendix A: Line Output and Headphone Output for a signal flow block diagram.

Evaluation and Measurements

SBAU127 –July 2007

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DEM-DAI3793A specifications

The Texas Instruments DEM-DAI3793A is a versatile digital-to-analog converter (DAC) evaluation module designed for assessing the performance and capabilities of TI's DACs in various applications. This module features the high-performance DAC3793, which is widely recognized for its precision and flexibility, making it an ideal choice for audio, industrial automation, and communication systems.

One of the standout features of the DEM-DAI3793A is its ability to support a 16-bit resolution. This high resolution enables the module to provide fine granularity in signal representation, ensuring that even the most subtle changes in the input signal are accurately reflected in the output. The DAC3793 also boasts a high sampling rate, which is crucial for applications that require rapid signal processing and real-time data conversion.

The module incorporates advanced technologies such as dynamic element matching and integrated circuitry to minimize distortion and noise. These technologies are crucial for achieving high-fidelity audio playback and improving overall system performance. Additionally, the DEM-DAI3793A is designed to minimize power consumption while maintaining exceptional performance levels, making it suitable for battery-operated devices and energy-conscious applications.

Another significant characteristic of the DEM-DAI3793A is its ease of integration with various development environments. The evaluation module supports both hardware and software interfacing, allowing engineers to quickly prototype and test their designs. It comes equipped with a USB interface for seamless connectivity with computers, along with supporting software tools that facilitate the configuration and testing of the DAC's functionalities.

The DEM-DAI3793A is also designed with a robust set of output options, including differential and single-ended outputs. This flexibility allows for compatibility with a wide range of amplification and filtering circuits. Furthermore, the evaluation module is equipped with convenient power supply options, enabling it to operate in various settings without the need for extensive modifications.

In conclusion, the Texas Instruments DEM-DAI3793A is an exceptional evaluation module that showcases the capabilities of the DAC3793. With its high resolution, advanced technologies, ease of integration, and flexible output options, it serves as an indispensable tool for engineers and developers working on high-performance audio and data processing applications.

Texas Instruments DEM-DAI3793A Digital-to-Analog D/A Performance, D/A Line Output Parameters

Models: DEM-DAI3793A

Measurements for Dynamic Characteristics

5.4.1 Digital-to-Analog (D/A) Performance

Table 5-1. D/A Line Output Parameters

Table 5-2. 16Ω Headphone Output Inserted in Headphone Jack J6

SBAU127 –July 2007

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DEM-DAI3793A specifications