ak4525 AKM Semiconductor, Inc., ak4525 Datasheet
ak4525
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ak4525 Summary of contents
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... ASAHI KASEI 20Bit Stereo 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. ...
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... ASAHI KASEI n Ordering Guide AK4525VF -40 +85 C AKD4525 Evaluation Board for AK4525 n Pin Layout VREFH 1 AINR+ 2 AINR- 3 AINL+ 4 AINL AGND 7 XTI 8 XTO 9 DIF0 10 DIF1 11 LRCK 12 SCLK 13 SDTI 14 n Difference with AK4522 and AK4523 AK4522 Crystal Oscillator Not available Master Mode Not available Digital Power Supply 2 ...
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... AOUTL O Lch Analog Output Pin 27 AOUTR O Rch Analog Output Pin 28 VCOM O Common Voltage Output Pin, VA/2 Note: All input pins except pull-down or biased pins should not be left floating. MS0053-E-00 PIN/FUNCTION Function (Internal pull-down pin) (Internal biased pin [AK4525] 2000/9 ...
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... MS0053-E-00 ABSOLUTE MAXIMUM RATINGS Symbol min VA -0.3 VD -0.3 (Note 2) - GND IIN - VINA -0.3 VIND -0.3 Ta -40 Tstg -65 Symbol min VA 4 [AK4525] max Units 6.0 V 6 VA+0.3 V VD+0 150 C typ max Units 5.0 5 2000/9 ...
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... Differential Inputs; Analog Source Impedance=470 (Note 4) 84 (Note 5) 94 (Note (Note 7) 2.85 15 (Note 8) 80 (Note 5) 94 (Note 2.65 5 (Note 8) (Note 10 [AK4525] typ max Units 20 Bits 92 dB 100 dB 100 dB 110 dB 0.1 0 ppm/ C 3.0 3.15 Vpp ...
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... -0.5dB -0.1dB PB 0 -6.0dB (Note 12 CHARACTERISTICS 5.5V) Symbol min VIH 70%VD VIL - VIH 95%VD VIL - VOH VD-0.4 VOL - (Note 14) Iin - - 6 - [AK4525] typ max Units 19.76 kHz 20.02 kHz 20.20 kHz 22.05 kHz kHz dB 0.005 dB 29.3 1/fs 0 µs 0.9 Hz 2.7 Hz 6.0 Hz 20.0 kHz 22.05 kHz kHz dB 0.06 dB 14.7 1/fs 0 typ ...
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... SCLK rising edge must not occur at the same time as LRCK edge. 17. The AK4525 can be reset by bringing PDN “L”. When the state of CMODE changes during operation, the AK4525 should be reset by PDN. PDN should be held “L” for 5ms to allow the X’tal oscillation to begin at power-up. ...
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... LRCK tSLR SCLK tLRM SDTO tSDS SDTI LRCK tMSLR SCLK SDTO SDTI PDN SDTO MS0053-E-00 tSLKL tLRS tSDH Serial Interface Timing (Slave mode) tSDS tSDH Serial Interface Timing (Master mode) tPD tPDV Reset & Initialize Timing - 8 - [AK4525] 50%VD tSLKH 50%VD tSSD 50%VD 50%VD 50%VD 50%VD tSSD 50%VD 50%VD 70%VD 30%VD 2000/9 ...
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... Table 1. System Clock Example at normal speed When the state of CMODE changes under operation, the AK4525 should be reset by PDN. At that case, the analog outputs should be muted externally because some click noise may occur. External loading capacitor ( 22pF to AGND for XTI/XTO) are required for a crystal oscillator. PDN should be held “L” ...
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... ASAHI KASEI n Audio Serial Interface Format Data is shifted in/out the SDTI/SDTO pins using SCLK and LRCK inputs. The AK4525 supports the master mode. In this case, SCLK and LRCK are outputs and the frequency of SCLK is fixed to 64fs. Four serial data modes selected by the DIF0 and DIF1 pins are supported as shown in Table 3. In all modes the serial data has MSB first, 2’ ...
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... SCLK(i:64fs) SDTO( SDTI( 19:MSB, 0:LSB n Digital High Pass Filter The ADC of AK4525 has a digital high pass filter for DC offset cancel. The cut-off frequency of the HPF is 0.9Hz at fs=44.1kHz and also scales with sampling rate (fs). MS0053-E- Don’ ...
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... ASAHI KASEI n De-emphasis Filter The DAC of AK4525 includes the digital de-emphasis filter (tc=50/15µs) by IIR filter. This filter corresponds to three frequencies (32kHz, 44.1kHz and 48kHz). The de-emphasis filter selected by DEM0 and DEM1 is enabled for input audio data. The de-emphasis is also disabled at DEM0= “1” and DEM1= “0”. ...
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... ASAHI KASEI n Power-Down & Reset The ADC and DAC of AK4525 are placed in the power-down mode by bringing a power down pin, PDN “L” and each digital filter is also reset at the same time.This reset should always be done after power-up. In case of the ADC, an analog initialization cycle starts after exiting the power-down mode ...
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... Digital Supply 0.1u + 10u 0. 10u Mode 18 Setting VREFH VCOM 28 AINR+ AOUTR 27 AINR- AOUTL 26 AINL+ CMODE 25 AINL- PDN 24 VA DGND 23 AGND VD 22 AK4525 XTI MCKO 21 XTO M/S 20 DIF0 TST 19 DIF1 DEM1 18 LRCK DEM0 17 SCLK SMUTE 16 SDTI SDTO 15 2000/9 ...
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... The ideal code is 00000H(@20bit) with no input signal. The DC offset is removed by the internal HPF. The AK4525 samples the analog inputs at 64fs. The digital filter rejects noise above the stop band except for multiples of 64fs. A simple RC filter (fc=150kHz) may be used to attenuate any noise around 64fs and most audio signals do not have significant energy at 64fs ...
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... Figure 12. External analog circuit example (gain=6dB) MS0053-E-00 4.7k 10k Vop 10k - 330 - + + NJM2100 330 Vop=VA=5V Same circuit 10k 18k Vop=12V Vop 10u - 4. NJM5532 4.7k Rch Op-amp Optional amp with 6dB gain - 16 - [AK4525] 10k 22u Signal Vop 3.2Vpp 4.7k 0.1u BIAS + 4.7k 10u Lch Out 5.22Vpp 27k 2000/9 ...
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... ASAHI KASEI 28pin VSOP (Unit: mm) *9.8 0.2 0.675 28 1 0.22 0.1 Seating Plane NOTE: Dimension "*" does not include mold flash. n Material & Lead finish Package molding compound: Lead frame material: Lead frame surface treatment: MS0053-E-00 PACKAGE 15 14 0.65 Detail A 0.10 Epoxy Cu Solder plate - 17 - [AK4525] 1.25 0.2 A +0.1 0.15-0.05 0.1 0.1 0-10 2000/9 ...
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... AKM harmless from any and all claims arising from the use of said product in the absence of such notification. MS0053-E-00 MARKING AKM AK4525VF XXXBYYYYC Date code identifier Lot number (X : Digit number Alpha character) Assembly date (Y : Digit number, C Alpha character) IMPORTANT NOTICE - 18 - [AK4525] 2000/9 ...