音频信号处理器

Analog Device,Inc.(简称ADI)拥有适合音频应用的各种音频专用DSP和通用DSP。其中SigmaDSP™ 允许用户对音频DSP使用SigmaStudio graphical tool 编程方法,而不必使用汇编语言或C语言。许多SigmaDSP处理器集成了高性能的音频ADC和DAC,可构建完整的音频片上系统(Soc)。ADI公司的SHARC® 处理器 是音频处理领域的佼佼者,而Blackfin® 处理器适合于移动多媒体应用。如有问题,请查看SigmaDSP常见问题解答。

SigmaDSP Audio Processors
Part# Results: 11 Instructions/Cycles Data RAM (k Words) Digital I/O Channels Analog I/O Channels GPIOs Features Product Description Price* (1000 pcs.)
AD1940 1,536 6 16/16 0/0 - - Multichannel 28-/56-bit audio processor with 4-wire SPI control interface $8.45
AD1941 1,536 6 16/16 0/0 - - Multichannel 28-/56-bit audio processor with 2-wire I2C control interface $8.45
ADAU1401A 1,024 2 8/8 - 12 SigmaDSP, 4-ch 8-bit aux ADC, can selfboot off external eeprom 28-/56-bit automotive audio processor with 2 ADCs and 4 DACs $5.68
ADAU1442 3,584 8 24/24 0/0 12 8x2-ch ASRC, Selfboot from EEPROM, S/PDIF Rx, Aux A/Ds Digital audio processor with flexible audio routing matrix, 2 × 8-channel ASRC $9.96
ADAU1445 3,584 8 24/24 0/0 12 2x8-ch ASRC, Selfboot from EEPROM, S/PDIF Rx, Aux A/Ds Digital audio processor with flexible audio routing matrix, 8 × 2-channel ASRC $9.31
ADAU1446 3,584 8 24/24 0/0 12 Selfboot from EEPROM, Auxiliary ADCs Digital audio processor with flexible audio routing matrix $8.28
ADAU1461 1,024 4 8/8 2/2 4 DSP, mic bias, stereo analog/PDM mic, capless headphone driver Stereo, low power, 96 kHz, 24-bit automotive SigmaDSP audio codec with integrated PLL $4.89
ADAU1701 1,024 2 8/8 2/4 12 SigmaDSP, 4-ch 8-bit aux ADC, can selfboot off external eeprom 28-/56-bit audio processor with 2 ADCs and 4 DACs $4.52
ADAU1702 512 0.5 8/8 2/4 12 SigmaDSP, 4-ch 8-bit aux ADC, can selfboot off external eeprom 28-/56-bit audio processor with 2 ADCs and 4 DACs $3.57
ADAU1761 1,024 4 8/8 2/2 4 Digital Microphone inputs, headphone amp, Frac PLL Stereo, low power, 96 kHz, 24-bit SigmaDSP audio codec with integrated PLL $3.91
ADAU1781 1,024 0.5 8/8 2/2 5 DSP, mic bias, stereo analog/PDM mic, class AB speaker driver SigmaDSP low-noise stereo audio codec for portable applications $3.20
SigmaDSP Audio Processors for TV
Part# Results: 3 Instructions/Cycles # ADC Input Channels # DAC Outputs DAC DNR (dB) DAC THD+N ADC THD+N (dB) Digital I/O Channels Digital Output PWM Chs Product Description Price* (1000 pcs.)
ADAV4322 2,560 4 11 95 85 -90 8/2 - Audio Processor for Advanced TV w/ Sound IF Demod & Stereo Decoder **
ADAV4601 - 2 6 94 86 -90 - 8 Audio Processor for Advanced TV $6.21
ADAV4622 2,560 4 8 94 86 -90 - 8 Audio Processor for Advanced TV with Sound IF Demodulator and Stereo Decoder $9.58