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AK4525 Dataheets PDF



Part Number AK4525
Manufacturers Asahi Kasei Microsystems
Logo Asahi Kasei Microsystems
Description 20-BIT STEREO ADC/DAC
Datasheet AK4525 DatasheetAK4525 Datasheet (PDF)

ASAHI KASEI [AK4525] AK4525 20Bit Stereo ∆Σ ADC & DAC with X’ tal Osc GENERAL DESCRIPTION The AK4525 has a dynamic range of 100dB and is well-suited middle-range MD, surround system, musical instruments and car audio. Analog inputs are full-differential with single-end capability. Analog outputs are single-ended. The AK4525 has X’ tal oscillation circuit and master mode. FEATURES o ∆Σ Stereo ADC - 64x Oversampling - Sample Rate Ranging from 32kHz to 48kHz - S/(N+D): 92dB - Dynamic range, S/N.

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ASAHI KASEI [AK4525] AK4525 20Bit Stereo ∆Σ ADC & DAC with X’ tal Osc GENERAL DESCRIPTION The AK4525 has a dynamic range of 100dB and is well-suited middle-range MD, surround system, musical instruments and car audio. Analog inputs are full-differential with single-end capability. Analog outputs are single-ended. The AK4525 has X’ tal oscillation circuit and master mode. FEATURES o ∆Σ Stereo ADC - 64x Oversampling - Sample Rate Ranging from 32kHz to 48kHz - S/(N+D): 92dB - Dynamic range, S/N: 100dB - Digital HPF for offset cancellation o ∆Σ Stereo DAC - 128x Oversampling - Sampling Rate Ranging from 32kHz to 48kHz - 2nd order SCF + 2nd order CTF - Digital de-emphasis for 32kHz, 44.1kHz, 48kHz sampling - S/(N+D): 90dB - Dynamic Range, S/N: 100dB - Soft Mute o High Jitter Tolerance o Master Clock: 256fs, 384fs, 512fs o X’ tal Oscillation circuit o Master/Slave Mode o Analog Power Supply: 4.5 to 5.5V, Digital Power Supply: 3.1 to 5.5V VA AGND VD DGND CMODE AINL+ AINLAINR+ AINRVREFH VCOM AOUTL AOUTR ∆Σ Modulator Decimation Filter HPF ∆Σ Modulator Decimation Filter HPF Clock Gen & Divider Common Voltage Serial I/O Interface LPF ∆Σ Modulator 8x Interpolator LPF ∆Σ Modulator 8x Interpolator MCKO XTI XTO LRCK SCLK SDTO SDTI DIF0 DIF1 SMUTE M/S PDN DEM0 DEM1 MS0053-E-00 -1- 2000/9 ASAHI KASEI n Ordering Guide AK4525VF AKD4525 n Pin Layout VREFH AINR+ AINRAINL+ AINLVA AGND XTI XTO DIF0 DIF1 LRCK SCLK SDTI -40 ∼ +85°C 28pin VSOP (0.65mm pitch) Evaluation Board for AK4525 [AK4525] 1 2 3 4 5 AK4525 6 7 Top View 8 9 10 11 12 13 14 28 VCOM 27 AOUTR 26 AOUTL 25 CMODE 24 PDN 23 DGND 22 VD 21 MCKO 20 M/S (Internal Pull-down) 19 TST 18 DEM1 17 DEM0 16 SMUTE 15 SDTO n Difference with AK4522 and AK4523 Crystal Oscillator Master Mode Digital Power Supply Ambient Operating Package AK4522 Not available Not available 2.7 ∼ 5.5V -10 ∼ 70°C 24pin VSOP AK4523 Not available Not available 3.0 ∼ 5.5V -40 ∼ 85°C 28pin VSOP AK4525 Available Available 3.1 ∼ 5.5V -40 ∼ 85°C 28pin VSOP MS0053-E-00 -2- 2000/9 ASAHI KASEI [AK4525] PIN/FUNCTION No. Pin Name 1 VREFH 2 AINR+ 3 AINR4 AINL+ 5 AINL6 VA 7 AGND 8 XTI 9 XTO 10 DIF0 11 DIF1 12 LRCK 13 SCLK 14 SDTI 15 SDTO 16 SMUTE 17 DEM0 18 DEM1 19 TST 20 M/S 21 MCKO 22 VD 23 DGND 24 PDN 25 CMODE 26 AOUTL 27 AOUTR 28 VCOM I/O Function I Positive Voltage Reference Input Pin, VA Used as a positive voltage reference by ADC & DAC. VREFH should be connected externally to filtered VA. I Rch Analog Positive Input Pin I Rch Analog Negative Input Pin I Lch Analog Positive Input Pin I Lch Analog Negative Input Pin - Analog Power Supply Pin - Analog Ground Pin I X’tal Input Pin O X’tal Output Pin I Audio Data Interface Format 0 Pin I Audio Data Interface Format 1 Pin I/O Input/Output Channel Clock Pin I/O Audio Serial Data Clock Pin I Audio Serial Data Input Pin O Audio Serial Data Output Pin I Soft Mute Pin When this pin goes “H”, soft mute cycle is initiated. When returning “L”, the o.


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