Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | DAC, Audio |
| NumberofChannels | 3 |
| Resolution(Bits) | 24 b |
| SamplingRate(PerSecond) | 200k |
| DataInterface | I²S |
| VoltageSupplySource | Analog and Digital |
| Voltage-Supply | 3V ~ 3.6V, 5V |
| OperatingTemperature | -25°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 28-SSOP (0.209, 5.30mm Width) |
Tổng quan
Description
The PCM1794ADBR is a high-performance, 24-bit stereo digital-to-analog converter (DAC) from Texas Instruments, designed for audio applications requiring exceptional sound quality. It utilizes advanced segment DAC architecture to achieve superior dynamic range and low distortion levels. This DAC supports sampling rates up to 200 kHz and provides a dynamic range of 132 dB and a total harmonic distortion plus noise (THD+N) of -108 dB, making it suitable for high-fidelity audio systems.
The PCM1794ADBR features differential current outputs, which enhance performance by reducing noise and distortion. It is compatible with various audio data formats, including I2S, left-justified, and right-justified, offering flexibility in system design. The device operates on dual power supplies: 5V for the analog section and 3.3V for the digital section, ensuring optimal performance.
Housed in a 28-pin SSOP package, the PCM1794ADBR is suitable for professional audio equipment, home theater systems, and other high-end audio applications where clarity and precision are critical. Its robust performance and versatile interface options make it a popular choice among audio engineers and designers.
The PCM1794ADBR features differential current outputs, which enhance performance by reducing noise and distortion. It is compatible with various audio data formats, including I2S, left-justified, and right-justified, offering flexibility in system design. The device operates on dual power supplies: 5V for the analog section and 3.3V for the digital section, ensuring optimal performance.
Housed in a 28-pin SSOP package, the PCM1794ADBR is suitable for professional audio equipment, home theater systems, and other high-end audio applications where clarity and precision are critical. Its robust performance and versatile interface options make it a popular choice among audio engineers and designers.
Equivalent
The PCM1794ADBR is a high-performance DAC from Texas Instruments. Equivalent products include:
1. AK4490EQ - by Asahi Kasei Microdevices, offering similar high-resolution audio performance.
2. ES9038Q2M - by ESS Technology, known for its high dynamic range and low distortion.
3. CS4398 - by Cirrus Logic, providing advanced audio quality with similar specifications.
These alternatives offer comparable features for high-fidelity audio applications. Always review datasheets for specific requirements.
1. AK4490EQ - by Asahi Kasei Microdevices, offering similar high-resolution audio performance.
2. ES9038Q2M - by ESS Technology, known for its high dynamic range and low distortion.
3. CS4398 - by Cirrus Logic, providing advanced audio quality with similar specifications.
These alternatives offer comparable features for high-fidelity audio applications. Always review datasheets for specific requirements.
Features
The PCM1794ADBR is a high-performance digital-to-analog converter (DAC) from Texas Instruments. Key features include:
1. Resolution and Performance: It offers 24-bit resolution and supports up to 192 kHz sampling rates, ensuring high-quality audio output.
2. Dynamic Range and SNR: The DAC boasts an impressive dynamic range of 127 dB and a signal-to-noise ratio (SNR) of 127 dB, providing clear and detailed sound.
3. Distortion: It features a low total harmonic distortion plus noise (THD+N) of -108 dB, minimizing audio distortion.
4. Architecture: Utilizes a 4th-order sigma-delta modulator and an 8x oversampling digital filter for superior audio performance.
5. Output: Supports both differential and single-ended outputs, offering flexibility in audio design applications.
6. Power Supply: Operates with a dual power supply, ±5V for analog and 3.3V for digital, optimizing performance.
7. Interface: Compatible with various digital audio interfaces, including I2S, left-justified, and right-justified formats.
8. Applications: Ideal for high-end audio applications like home theater systems, professional audio equipment, and high-fidelity sound systems.
These features make the PCM1794ADBR a preferred choice for applications requiring high-resolution audio conversion.
1. Resolution and Performance: It offers 24-bit resolution and supports up to 192 kHz sampling rates, ensuring high-quality audio output.
2. Dynamic Range and SNR: The DAC boasts an impressive dynamic range of 127 dB and a signal-to-noise ratio (SNR) of 127 dB, providing clear and detailed sound.
3. Distortion: It features a low total harmonic distortion plus noise (THD+N) of -108 dB, minimizing audio distortion.
4. Architecture: Utilizes a 4th-order sigma-delta modulator and an 8x oversampling digital filter for superior audio performance.
5. Output: Supports both differential and single-ended outputs, offering flexibility in audio design applications.
6. Power Supply: Operates with a dual power supply, ±5V for analog and 3.3V for digital, optimizing performance.
7. Interface: Compatible with various digital audio interfaces, including I2S, left-justified, and right-justified formats.
8. Applications: Ideal for high-end audio applications like home theater systems, professional audio equipment, and high-fidelity sound systems.
These features make the PCM1794ADBR a preferred choice for applications requiring high-resolution audio conversion.
Pinout
The PCM1794ADBR is a high-performance, 24-bit digital-to-analog converter (DAC) by Texas Instruments. It is part of the PCM1794A series, offering excellent audio performance. The PCM1794ADBR comes in a 28-pin SSOP (Shrink Small Outline Package). Below is a brief summary of its pin functions:
- Digital Interface Pins: These include pins for digital audio input such as Data (DIN), Bit Clock (BCK), and Word Clock (LRCK).
- Control Pins: These are used for mode settings and include pins like Mode Control 0 (MD0) and Mode Control 1 (MD1).
- Analog Output Pins: The DAC provides differential outputs with pins for Left Channel (+LOUT, -LOUT) and Right Channel (+ROUT, -ROUT).
- Power Supply Pins: Separate pins for digital (VDD) and analog (VCC) power supply ensure reduced noise and improved performance.
- Ground Pins: These provide grounding for digital (DGND) and analog (AGND) sections.
- Additional Pins: Include functions like Zero Detection (ZERO), which indicates when the audio input is zero, and De-Emphasis (DEM), used for emphasis control.
The PCM1794ADBR is designed for high-end audio applications, offering superb sound quality with low distortion and high dynamic range.
- Digital Interface Pins: These include pins for digital audio input such as Data (DIN), Bit Clock (BCK), and Word Clock (LRCK).
- Control Pins: These are used for mode settings and include pins like Mode Control 0 (MD0) and Mode Control 1 (MD1).
- Analog Output Pins: The DAC provides differential outputs with pins for Left Channel (+LOUT, -LOUT) and Right Channel (+ROUT, -ROUT).
- Power Supply Pins: Separate pins for digital (VDD) and analog (VCC) power supply ensure reduced noise and improved performance.
- Ground Pins: These provide grounding for digital (DGND) and analog (AGND) sections.
- Additional Pins: Include functions like Zero Detection (ZERO), which indicates when the audio input is zero, and De-Emphasis (DEM), used for emphasis control.
The PCM1794ADBR is designed for high-end audio applications, offering superb sound quality with low distortion and high dynamic range.
Manufacturer
The PCM1794ADBR is manufactured by Texas Instruments (TI). Texas Instruments is an American technology company that designs and manufactures semiconductors and various integrated circuits. It is a significant player in the electronics industry and serves a wide range of markets, including consumer electronics, automotive, industrial, and communications equipment. TI is known for its innovation in analog and embedded processing technologies, and it provides components that are critical to the function of a multitude of electronic devices. The company is highly regarded for its research and development capabilities and has a strong global presence.
Application
The PCM1794ADBR is a high-performance digital-to-analog converter (DAC) often used in audio applications requiring superior sound quality. Common application areas include high-end audio equipment, such as CD/SACD players, digital audio workstations, and professional audio processing systems. It is also utilized in home theater systems, audio-visual receivers, and high-fidelity headphone amplifiers. The device's ability to handle high-resolution audio formats makes it suitable for studio-grade audio production and mastering, where precision and sound fidelity are crucial. Its integration in these applications is driven by its excellent dynamic performance and low distortion.
Package
The PCM1794ADBR is a high-performance audio digital-to-analog converter (DAC) from Texas Instruments. It comes in an SSOP-28 package, which is a Shrink Small Outline Package with 28 leads, designed for surface-mount technology.
