Overview
The PCM1690DCA, produced by Texas Instruments, is a high-performance, 24-bit, eight-channel digital-to-analog converter (DAC) designed for audio applications. This device features differential outputs and supports a wide range of sampling rates from 8 kHz to 192 kHz. It employs an enhanced multi-level delta-sigma (ΔΣ) modulator, ensuring high dynamic range and precision. The PCM1690DCA is particularly suited for car audio AVN applications and other high-fidelity audio systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 Bits | |
| Sampling Rate | 8 kHz to 192 kHz | |
| Dynamic Range | 113 dB | |
| Differential Voltage Output | 8 VPP | |
| Analog Lowpass Filter | Included | |
| Oversampling Digital Filter | 4x/8x | |
| Passband Ripple | ±0.0018 dB | |
| Stop Band Attenuation | -75 dB | |
| Audio Interface Formats | I2S, Left-/Right-Justified, DSP, TDM | |
| Data Length | 16, 20, 24, 32 Bits | |
| Operating Temperature | -40°C to 85°C | |
| Package Type | 48-HTSSOP |
Key Features
- Enhanced multi-level delta-sigma (ΔΣ) modulator for high dynamic range and precision.
- Differential voltage outputs with 8 VPP.
- Flexible audio interface supporting I2S, left-/right-justified, DSP, and TDM formats.
- Support for 16-, 20-, 24-, and 32-bit digital audio input words.
- Integrated analog lowpass filter and 4x/8x oversampling digital filter.
- Passband ripple of ±0.0018 dB and stop band attenuation of -75 dB.
- Control via three-wire SPI-compatible or two-wire I2C-compatible serial interface.
- Hardware control for digital attenuation, soft mute, de-emphasis, and more.
Applications
The PCM1690DCA is primarily designed for high-fidelity audio applications, including:
- Car audio AVN systems.
- Professional audio equipment.
- Home theater systems.
- High-end consumer audio devices.
Q & A
- What is the resolution of the PCM1690DCA?
The PCM1690DCA has a resolution of 24 bits. - What are the supported sampling rates for the PCM1690DCA?
The device supports sampling rates from 8 kHz to 192 kHz. - What is the dynamic range of the PCM1690DCA?
The dynamic range is 113 dB. - What types of audio interfaces does the PCM1690DCA support?
The device supports I2S, left-/right-justified, DSP, and TDM formats. - How can the PCM1690DCA be controlled?
The PCM1690DCA can be controlled via a three-wire SPI-compatible or two-wire I2C-compatible serial interface. - What is the operating temperature range of the PCM1690DCA?
The operating temperature range is -40°C to 85°C. - What is the package type of the PCM1690DCA?
The package type is 48-HTSSOP. - Does the PCM1690DCA include an analog lowpass filter?
Yes, the PCM1690DCA includes an integrated analog lowpass filter. - What are the key features of the PCM1690DCA's digital filter?
The device features a 4x/8x oversampling digital filter with a passband ripple of ±0.0018 dB and stop band attenuation of -75 dB. - What are some typical applications of the PCM1690DCA?
Typical applications include car audio AVN systems, professional audio equipment, home theater systems, and high-end consumer audio devices.
