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

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Measurements for Dynamic Characteristics

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

Measurement path: 17.Line Input (AIN3L/AIN3R)

csv file: 17_ADC_Line_Input.csv

Table 5-3. A/D Line Input Parameters

Power Supply	Parameter	Filter Setting		Left Channel	Right Channel
3.3V	THD+N ( –1dB at 1kHz)	400Hz—20kHz	AES-17	0.009%	0.009%
	SNR (BPZ input)	22Hz—20kHz	SPCL +	90.4dB	90.5dB
		A-weighting
	DR (–60dBFS input)	22Hz—20kHz	AES-17 +	90.6dB	90.3dB
		A-weighting
	Channel Separation	22Hz—20kHz	AES-17	87.8dB	87.8dB
	(BPZ input for target channel)

To obtain the performance results shown in Table 5-3, the speaker/headphone module should be powered down, and other functions should be set with these parameters:

∙Headphone and Speaker Amp: Disabled

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

∙ALC: Off

∙Mic boost: 0dB

∙Analog mixing: Disabled

∙All PGA: 0dB

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

See Appendix A: Line Input (AIN3L/AIN3R) for a signal flow block diagram.

5.4.3 Speaker Output Power Performance

Measurement path: 07.Stereo Speaker Output

csv file: 07_DAC_Stereo_Speaker_Output_8ohms.csv

Table 5-4. Stereo Speaker Output Parameters

Power Supply	Parameter	Speaker Volume	RL (Ω)	SPOL	SPOR
3.3V	Output Power	+6dB	8	594.2mW	594.1mW
	(THD+N = 10%)

To obtain the performance results shown in Table 5-4, the headphone module should be powered down, and other functions should be set with these parameters:

∙Headphone Amp: Disabled

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

∙Speaker volume: +6dB

∙ALC: Off

∙RL: 8Ω

The bundled .csv file automatically sets the device to these conditions, except for the speaker volume; adjust the speaker volume to +6dB manually after the .csv file is loaded.

Note: Adjust the input signal level of the Audio Precision analyzer to meet the target THD+N = 10%.

See Appendix A: Stereo Speaker Output for a signal flow block diagram.

SBAU127 –July 2007

Evaluation and Measurements

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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.

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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 manual Analog-to-Digital A/D Performance, A/D Line Input Parameters

Models: DEM-DAI3793A