ak4523 AKM Semiconductor, Inc., ak4523 Datasheet
ak4523
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ak4523 Summary of contents
Page 1
... ASAHI KASEI The AK4523 has a dynamic range of 100dB and is well-suited middle-range MD, surround system, musical instruments and car audio. Signal inputs and outputs are single-ended. The DAC outputs are analog filtered to remove out of band noise. External components are minimized Stereo ADC ...
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... AINL AGND DIF0 10 DIF1 11 LRCK 12 SCLK 13 SDTI 14 n Difference between AK4523 and AK4522 AK4523 Digital Power Supply 3.0~5.5V Ambient Operating -40~85°C Package 28pin VSOP M0021-E-03 -40 ~ +85°C 28pin VSOP (0.65mm pitch) Evaluation Board for AK4523 AK4523 23 Top ...
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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 for CMODE pin should not be left floating. M0021-E-03 PIN/FUNCTION Function (Internal biased pin [AK4523] 1999/12 ...
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... M0021-E-03 ABSOLUTE MAXIMUM RATINGS Symbol min VA -0.3 VD -0.3 DGND (Note 2) - IIN - VINA -0.3 VIND -0.3 Ta -40 Tstg -65 Symbol min VA 4.5 VD 3.0 VREFH 90% [AK4523] max Units 6.0 V 6.0 V 0.3 V ±10 mA VA+0.3 V VD+0.3 V °C 85 °C 150 typ max Units 5.0 5 1999/12 ...
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... All digital input pins are held VD or DGND. M0021-E-03 ANALOG CHARACTERISTICS min (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 [AK4523] 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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... PB 0 -0.02dB 0 -0.06dB 0 -6.0dB 0 SB 24. (Note 12) GD DGD FR -0.5dB -0.1dB -0.06dB PB 0 -6.0dB (Note 12 [AK4523] typ max Units 19.76 kHz 20.02 kHz 20.20 kHz 22.05 kHz kHz ±0.005 dB dB 29.3 1/fs 0 µs 0.9 Hz 2.7 Hz 6.0 Hz 20.0 kHz 22.05 kHz kHz ±0. 14.7 1/fs ±0.2 ...
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... Low-Level Output Voltage (Iout=80µA) Input Leakage Current (Note 13) Note: 13. CMODE pin has internal pull-up and pull-down devices, nominally 50kohm. M0021-E-03 DIGITAL CHARACTERISTICS Symbol min VIH 70%VD VIL - VIH 95%VD VIL - VOH VD-0.4 VOL - Iin - - 7 - [AK4523] typ Max Units - - V - 30% 10% 0.4 V ±10 - µA ...
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... Note 14. SCLK rising edge must not occur at the same time as LRCK edge. 15. The AK4523 can be reset by bringing PD “L”. When the state of CMODE change during operation, the AK4523 should be reset 16. These cycles are the number of LRCK rising from PD rising. M0021-E-03 ...
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... ASAHI KASEI n Timing Diagram LRCK tSLR SCLK tLRM SDTO tSDS SDTI PD SDTO M0021-E-03 tSLKL tSLKH tLRS tSSD tSDH Serial Interface Timing tPD tPDV Reset & Initialize Timing - 9 - [AK4523] 50%VD 50%VD 50%VD 50%VD 70%VD 30%VD 1999/12 ...
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... CMODE = “L” 32.0kHz 8.1920MHz 44.1kHz 11.2896MHz 48.0kHz 12.2880MHz When the state of CMODE change under operation, the AK4523 should be reset that case, the analog outputs should be muted externally because some click noise may occur. M0021-E-03 OPERATION OVERVIEW MCLK 384fs 512fs CMODE = “ ...
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... Don’t Care Figure 1. Mode 0 Timing Don’t Care Figure 2. Mode 1 Timing - 11 - [AK4523] L/R SCLK (Slave) ³ 32fs H/L ³ 40fs H/L ³ 40fs H/L 32fs or ³ 40fs L ...
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... SCLK(i:64fs) SDTO( SDTI( 19:MSB, 0:LSB n Digital High Pass Filter The ADC of AK4523 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). M0021-E- Don’ ...
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... ASAHI KASEI n De-emphasis Filter The DAC of AK4523 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 AK4523 are placed in the power-down mode by bringing a power down pin, PD “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. Therefore, the output data, SDTO becomes available after 516 cycles of LRCK clock ...
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... AOUTL AINR- 4 AINL+ CMODE 0.1u AINL DGND 7 AGND VD AK4523 DIF0 MCKI 11 DIF1 DEM1 12 LRCK DEM0 13 SCLK SMUTE 14 SDTI SDTO Figure 7. Typical Connection Diagram - 15 - [AK4523] 3.0 ~ 5.5V Digital Supply 0.1u + 10u 0. 10u Mode 18 Setting 1999/12 ...
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... S M UTE 14 S DTI S DTO System Controller Figure 8. Ground Layout 5V digital VD VD System AK4523 Controller Case 1. 5V system 3V digital VD VD System AK4523 Controller Case 2. 5V/3V system Figure 9. Power Supply Arrangement - 16 - [AK4523 1999/12 ...
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... VREFH Vpp. The AK4523 can accept input voltages from AGND to VA. The ADC output data format is 2’s complement. The output code is 7FFFFH(@20bit) for input above a positive full scale and 80000H(@20bit) for input below a negative fill scale ...
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... The output signal is inverted by using the circuit in this case. 27u AOUTL + 2.9Vpp Vop BIAS 0.1u + 10u Figure 11. External analog circuit example (gain=6dB) M0021-E-03 10k 18k Vop=12V Vop 10u - 4. NJM5532 4.7k Rch Op-amp Optional amp with 6dB gain - 18 - [AK4523] Lch Out 5.22Vpp 27k 1999/12 ...
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... Seating Plane NOTE: Dimension "*" does not include mold flash Package & Lead frame material Package molding compound: Lead frame material: Lead frame surface treatment: M0021-E-03 PACKAGE 0.65 0.15-0.05 Detail A 0.10 Epoxy Cu Solder plate - 19 - [AK4523] 1.25±0.2 +0.1 0.1±0.1 0-10° 1999/12 ...
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... AKM harmless from any and all claims arising from the use of said product in the absence of such notification. M0021-E-03 MARKING AKM AK4523VF XXXBYYYYC XXXBYYYYC: data code identifier Lot number (X: Digit number, B: Alpha character) Assembly data (Y: Digit number, C: Alpha character) IMPORTANT NOTICE - 20 - [AK4523] 1999/12 ...