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AK7757VQ Datasheet, PDF (1/24 Pages) Asahi Kasei Microsystems – 24bit 3ch ADC +4ch DAC + Mic Amp 内蔵 Audio DSP | |||
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[AK7757]
AK7757
24bit 3ch ADC +4ch DAC + Mic Amp å
èµ Audio DSP
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AK7757ã¯4ch DACã¨ã¹ãã¬ãªADCãã¢ãã©ã«ADCããã¤ã¯ã¢ã³ãããã£ã¸ã¿ã«ãªã¼ãã£ãªã¤ã³ã¿ãã§
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èµããã·ã°ãã«ããã»ããµã§ãã1536step/fs (48kHzãµã³ããªã³ã°æ) ã®ä¸¦åæ¼ç®è½åãæã¡ã
RAMãã¼ã¹DSPã®ãããããã°ã©ã ãæ¸ãæãããã¨ã§ãã¦ã¼ã¶ã¼ã®è¦æã«åãããé³é¿å¦çå¹æãã
ç¬èªéçºã®é«æ§è½ãã³ãºããªã¼ (HF) æ©è½ãå®ç¾ããããã¨ãå¯è½ã§ããAK7757ã¯å°åã®48pin LQFP
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 DSP
- ãã¼ã¿å¹
: 24bit (Data RAM: F24 floating point)
- æéãã·ã³ãµã¤ã¯ã«: 13.6 ns (9216step/fs; fs = 8kHz)
- ä¹ç®å¨: 20 x 20 â 36bit Double precision arithmetic available
- é¤ç®å¨: 20 / 20 â 20bit
- ALU: 40bit ç®è¡æ¼ç® (overflow margin 4bit) 24bit æµ®åå°æ°ç¹ç®è¡ã»è«çæ¼ç®
- ããã°ã©ã RAM: 4096 x 36bit
- ä¿æ° RAM: 4096 x 20bit
- ãã¼ã¿ RAM: 2048 x 24bit (F24 floating point)
- é
å»¶ç¨ RAM: 4096 x 20bit, 4096 x 20bit
- ãã¹ã¿ã¯ããã¯: 73.7MHz
- JX pins (interrupt)
 2ch ADC1
- ãµã³ããªã³ã°å¨æ³¢æ°: 8kHz~48kHz
- 3in / 1out å
¥åã»ã¬ã¯ã¿ (Diffrentialx1 single endx1 single end with MicAmpx1)
- ADC S/N: 96dBA, S/ (N+D): 88dB
 1ch ADC2
- ãµã³ããªã³ã°å¨æ³¢æ°: 8kHz~48kHz
- ADC S/N: 89dBA, S/(N+D): 82dB
 4ch DAC
- ãµã³ããªã³ã°å¨æ³¢æ°: 8kHz~48kHz
- DAC S/N: 107dBA, S/ (N+D): 92dB
 ãã¤ã¯ã¤ã³ã¿ãã§ã¼ã¹
- å·®å/ã·ã³ã°ã«ã¨ã³ãå
¥å
- Programmable Gain (+33dB ~ +15dB and 0dB, 3dB step)
- Low Noise Microphone Bias
 CODEC, DSPãªã¼ããã¯ã¼ãã¦ã³
 μP I/F: SPI, I2C
 é»æºé»å§
Analog (AVDD): 3.0V ~ 3.6V (typ.3.3V)
Digital1 (DVDD): 3.0V ~ 3.6V (typ.3.3V)
Digital2 (DVDD18): 1.7V ~ 1.9V (typ.1.8V)
 åä½æ¸©åº¦ç¯å²: -40°C ~ 85°C
 ããã±ã¼ã¸: 48pin LQFP
MS1489-J-01-PB
1
2013/05
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