ADAU1701 SigmaDSP® 28/56-Bit Audio Processor with Two ADCs and Four DACs

The ADAU1701 is a complete single-chip audio system with a 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing includes equalization, cross-over, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening. This processing can be used to compensate for real-world limitations of speakers, amplifiers, and listening environments, providing dramatic improvements in perceived audio quality. Applications

Its signal processing is comparable to that found in high end studio equipment. Most processing is done in full 56-bit, double precision mode, resulting in very good low level signal perfor-mance. The ADAU1701 is a fully programmable DSP. The easy to use SigmaStudio™ software allows the user to graphically configure a custom signal processing flow using blocks such as biquad filters, dynamics processors, level controls, and GPIO interface controls.

ADAU1701 programs can be loaded on power-up either from a serial EEPROM through its own self-boot mechanism or from an external microcontroller. On power-down, the current state of the parameters can be written back to the EEPROM from the ADAU1701 to be recalled the next time the program is run.

Two Σ-Δ ADCs and four Σ-Δ DACs provide a 98.5 dB analog input to analog output dynamic. Each ADC has a THD + N of −83 dB, and each DAC has a THD + N of −90 dB. Digital input and output ports allow a glueless connection to additional ADCs and DACs. The ADAU1701 communicates through an I2C® bus or a 4-wire SPI port.

Features and Benefits
  • 28-/56-bit, 50 MIPS digital audio processor
  • 2 ADCs: SNR of 100 dB, THD + N of −83 dB
  • 4 DACs: SNR of 104 dB, THD + N of −90 dB
  • Complete standalone operation
  • Self-boot from serial EEPROM
  • Auxiliary ADC with 4-input mux for analog control
  • GPIOs for digital controls and outputs
  • Fully programmable with SigmaStudio graphical tool
  • 28-bit × 28-bit multiplier with 56-bit accumulator for full double-precision processing
  • Clock oscillator for generating a master clock from crystal
  • PLL for generating master clock from 64 × fS, 256 × fS, , 384 × fS, , or 512 × fS, clocks
  • See data sheet for additional features
Processors & DSP
Audio & Video Products
Data Sheets
Documentnote
ADAU1701: SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs Data Sheet (Rev. C)PDF 1.07 M
Application Notes
Documentnote
AN-951: Using Hardware Controls with SigmaDSP GPIO Pins (Rev. A)PDF 439 kB
AN-1006: Using the EVAL-ADUSB2EBZ (Rev. A)PDF 349 kB
AN-923: Designing a System Using the ADAU1701/ADAU1702 in Self-Boot Mode (Rev. 0)PDF 134 kB
User Guides
Documentnote
UG-072: Evaluation Board User Guide for ADAU1401PDF 888 kB
Frequently Asked Questions
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADAU1701JSTZ Production48 ld LQFPOTH 2500 to 70C5.014.52Y
ADAU1701JSTZ-RL Production48 ld LQFPREEL 20000 to 70C04.52Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-ADAU1401AEBZFull Capability Engineering Evaluation Board 599Y
EVAL-ADAU1701MINIZLimited Capability Evaluation Board195Y
EVAL-ADUSB2EBZUSB Interface80Y
Reference Materials
ADAU1701: SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs Data Sheet (Rev. C) adau1701
AN-951: Using Hardware Controls with SigmaDSP GPIO Pins (Rev. A) adau1701
AN-1006: Using the EVAL-ADUSB2EBZ (Rev. A) ad1938
AN-951: 使用SigmaDSP内置 GPIO引脚进行硬件控制 (Rev. A) adau1701
AN-923: 在自引导模式下使用ADAU1701/ADAU1702设计系统 (Rev. 0) adau1701
AN-923: Designing a System Using the ADAU1701/ADAU1702 in Self-Boot Mode (Rev. 0) adau1701
UG-072: Evaluation Board User Guide for ADAU1401 adau1701
CN-0162: Analog Audio Input, Class-D Output with the ADAU1701 SigmaDSP... adau1701