Overview
The PCM1704U-J/2K is a high-performance, 24-bit digital-to-analog converter (DAC) produced by Texas Instruments. This component is renowned for its exceptionally high dynamic performance, ultra-low distortion, and excellent low-level signal performance. The PCM1704U-J/2K is ideal for high-end consumer and professional audio applications, offering superior audio quality and reliability. It incorporates a BiCMOS sign-magnitude architecture that eliminates glitches and nonlinearities around the bipolar zero point, ensuring highly accurate and linear output.
Key Specifications
| Parameter | Conditions | Min | Max | Units | |
|---|---|---|---|---|---|
| Resolution | 24 | 24 | 24 | Bits | |
| Data Format | 20-, 24-Bit, MSB-First | ||||
| Audio Data Code | Binary Two’s Complement | ||||
| Sampling Frequency (fS) | 16 | 96 | kHz | ||
| Input Clock Frequency | 25 | MHz | |||
| Input Logic Level: VIH(1) | +2.0 | +5.0 | V | ||
| Input Logic Level: VIL(1) | 0 | +0.8 | V | ||
| THD+N (VO = 0dB) | 0.0015 | 0.0025 | % | ||
| Dynamic Range (EIAJ, A-weighted) | 102 | 110 | dB | ||
| Signal-to-Noise Ratio (EIAJ, A-weighted) | 112 | 120 | dB | ||
| Power Supply | ±4.75V to ±5.25V | V | |||
| Package Type | SOIC | ||||
| No. of Pins | 20 |
Key Features
- High Dynamic Performance: The PCM1704U-J/2K boasts a dynamic range of 102 to 110 dB and a signal-to-noise ratio of 112 to 120 dB, ensuring exceptional audio quality.
- Low Distortion: With a total harmonic distortion plus noise (THD+N) as low as 0.0015% to 0.0025% at 0 dB, this DAC minimizes audio distortion.
- Glitch-Free Output: The BiCMOS sign-magnitude architecture eliminates glitches and nonlinearities around the bipolar zero point, providing a smooth and accurate output.
- Pin-Programmable Data Inversion: The data format can be controlled via the 20BIT and INVERT pins, allowing for flexibility in data handling.
- Fast Current Output: The DAC can deliver ±1.2 mA in 200 ns, ensuring rapid response times.
- Compact Package: The component is housed in a small 20-lead SOIC package, making it suitable for space-constrained applications.
Applications
The PCM1704U-J/2K is designed for high-end consumer and professional audio applications, including:
- Professional Audio Equipment: Mixing consoles, audio processors, and high-fidelity audio systems.
- Consumer Audio Devices: High-end home theaters, audio players, and sound systems.
- Studio Equipment: Digital audio workstations, recording equipment, and mastering systems.
- Automotive Audio Systems: Premium car audio systems requiring high-quality audio reproduction.
Q & A
- What is the resolution of the PCM1704U-J/2K DAC?
The resolution of the PCM1704U-J/2K is 24 bits.
- What is the typical dynamic range of the PCM1704U-J/2K?
The typical dynamic range is 110 dB (EIAJ, A-weighted).
- What is the signal-to-noise ratio (SNR) of the PCM1704U-J/2K?
The SNR is typically 120 dB (EIAJ, A-weighted).
- What is the total harmonic distortion plus noise (THD+N) of the PCM1704U-J/2K?
The THD+N is typically 0.0015% to 0.0025% at 0 dB.
- What is the power supply voltage range for the PCM1704U-J/2K?
The power supply voltage range is ±4.75V to ±5.25V.
- What type of package does the PCM1704U-J/2K come in?
The component is housed in a 20-lead SOIC package.
- Is the PCM1704U-J/2K glitch-free?
Yes, the BiCMOS sign-magnitude architecture ensures glitch-free output.
- Can the data format be programmed on the PCM1704U-J/2K?
Yes, the data format can be controlled via the 20BIT and INVERT pins.
- What are the typical applications for the PCM1704U-J/2K?
High-end consumer and professional audio applications, including professional audio equipment, consumer audio devices, studio equipment, and automotive audio systems.
- What is the sampling frequency range of the PCM1704U-J/2K?
The sampling frequency range is from 16 kHz to 96 kHz.
