Overview
The PCM1690DCAR is a high-performance, single-chip, 24-bit, eight-channel audio digital-to-analog converter (DAC) produced by Texas Instruments. This device features differential outputs and employs an enhanced, multi-level delta-sigma (ΔΣ) modulator. It supports a wide range of sampling rates from 8 kHz to 192 kHz and various digital audio input word lengths including 16-, 20-, 24-, and 32-bit formats. The PCM1690DCAR is designed for high-quality audio applications, offering excellent dynamic range, signal-to-noise ratio (SNR), and total harmonic distortion plus noise (THD+N) performance.
Key Specifications
| Specification | Value |
|---|---|
| Type | DAC, Audio |
| Number of Bits | 24 |
| Number of DAC Channels | 8 |
| Sampling Rate | 8 kHz to 192 kHz |
| Signal to Noise Ratio (SNR) | 113 dB |
| Total Harmonic Distortion + Noise (THD+N) | -94 dB |
| Dynamic Range | 113 dB |
| Supply Voltage | 5 V (Analog), 3.3 V (Digital) |
| Operating Temperature | -40°C to 85°C |
| Package Type | HTSSOP-48 |
| Package Dimensions | 12.5 mm x 6.1 mm x 1.15 mm |
| Interface | SPI, I2C, I2S, Left-/Right-Justified, DSP, TDM |
| Power Consumption | 558 mW |
Key Features
- High-Performance DAC: 24-bit delta-sigma DAC with differential outputs.
- Flexible Audio Interface: Supports I2S, left-justified, right-justified, DSP, and TDM formats.
- Advanced Filtering: Includes 4x/8x oversampling digital filter with passband ripple of ±0.0018 dB and stop band attenuation of -75 dB.
- Digital Control: Three-wire SPI, two-wire I2C-compatible serial interface, and hardware control options.
- Audio Processing: Digital attenuation, soft mute, de-emphasis (32 kHz, 44.1 kHz, 48 kHz), and data polarity control.
- Analog Lowpass Filter: Included for improved signal quality.
- Power Management: Power down mode and external RESET pin.
Applications
- Blu-ray and HD DVD Players: High-quality audio output for multimedia devices.
- AV Receivers and Home Theaters: Enhanced audio performance for home entertainment systems.
- Car Audio Systems: Suitable for car audio external amplifiers and AVN applications.
- Professional Audio Equipment: Ideal for applications requiring high-fidelity audio conversion.
Q & A
- What is the resolution of the PCM1690DCAR DAC?
The PCM1690DCAR has a 24-bit resolution.
- How many DAC channels does the PCM1690DCAR have?
The PCM1690DCAR has 8 DAC channels.
- What is the sampling rate range of the PCM1690DCAR?
The sampling rate range is from 8 kHz to 192 kHz.
- What is the signal-to-noise ratio (SNR) of the PCM1690DCAR?
The SNR is 113 dB.
- What are the supported audio interface formats?
The device supports I2S, left-justified, right-justified, DSP, and TDM formats.
- What is the operating temperature range of the PCM1690DCAR?
The operating temperature range is -40°C to 85°C.
- What is the package type of the PCM1690DCAR?
The package type is HTSSOP-48.
- Does the PCM1690DCAR have built-in filtering capabilities?
Yes, it includes a 4x/8x oversampling digital filter and an analog lowpass filter.
- How can the PCM1690DCAR be controlled?
The device can be controlled through a three-wire SPI, two-wire I2C-compatible serial interface, or hardware control.
- What power management features does the PCM1690DCAR offer?
The device offers power down mode and an external RESET pin.
