AK5385BVSP AKM Semiconductor Inc, AK5385BVSP Datasheet
AK5385BVSP
Specifications of AK5385BVSP
AK5385BVSP
Available stocks
Related parts for AK5385BVSP
AK5385BVSP Summary of contents
Page 1
ASAHI KASEI The AK5385B is a 24bit, 192kHz sampling 2ch A/D converter for high-end audio system. The modulator in the AK5385B uses the Enhanced Dual Bit architecture and the AK5385B realizes high accuracy and low cost. The AK5385B performs 114dB ...
Page 2
ASAHI KASEI Ordering Guide AK5385BVS AK5385BVF AKD5385B Pin Layout VREFL AVSS VCOM LIN+ LIN- CKS0 DVDD DVSS OVF PDN DIF M/S LRCK BICK MS0406-E-00 –10 ~ +70°C 28pin SOP (1.27mm pitch) –40 ~ +85°C 28pin VSOP (0.65mm pitch) Evaluation Board ...
Page 3
ASAHI KASEI Compatibility with AK5383/AK5394A Pin 1 Pin 2 Pin 3 Pin 6 Pin 9 Pin 11 Pin 12 Pin 16 Pin 18 Pin 20 Pin 26 Pin 27 Pin 28 fs MCLK at 48kHz MCLK at 96kHz MCLK at ...
Page 4
ASAHI KASEI Compare PCB layout example between AK5385B and AK5383 Analog Ground 0.1µ 10µ 1 VREFL VREFR 2 GNDL GNDR 3 VCOML VCOMR 0.22µ 4 AINL+ AINR+ 5 AINL- AINR- 6 ZCAL 3.0 ~ 5.25V 0.1µ AGND Digital ...
Page 5
ASAHI KASEI Compare PCB layout example between AK5385B and AK5394A Analog Ground 0.1µ 10µ 1 VREFL+ VREFR+ 10µ 2 VREFL- VREFR- 3 VCOML VCOMR 0.22µ 4 AINL+ AINR+ 5 AINL- AINR- 6 ZCAL VA 3.0 ~ 5.25V 0.1µ Digital 7 ...
Page 6
ASAHI KASEI No. Pin Name I/O Lch Voltage Reference Input Pin, AVDD 1 VREFL I Normally, connected to AVSS with a 10µF electrolytic capacitor and a 0.1µF ceramic capacitor. 2 AVSS - Analog Ground Pin 3 VCOM O Common Voltage ...
Page 7
ASAHI KASEI Handling of Unused Pin The unused I/O pins should be processed appropriately as below. Classification Pin Name LIN+, LIN− Analog RIN+, RIN− VREFL, VREFR OVF Digital TEST (AVSS, BVSS, DVSS=0V; Note 1) Parameter Power Supplies: Analog Digital |BVSS ...
Page 8
ASAHI KASEI (Ta=25°C; AVDD=5.0V, DVDD=3.3V; AVSS=BVSS=DVSS=0V; VREFL=VREFR=AVDD; fs=48kHz, 96kHz, 192kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Data; Measurement frequency=20Hz ∼ 20kHz at fs=48kHz, 40Hz ∼ 40kHz at fs=96kHz, 40Hz ∼ 40kHz at fs=192kHz; unless otherwise specified) Parameter Analog Input Characteristics: Resolution Input ...
Page 9
ASAHI KASEI FILTER CHARACTERISTICS (fs=48kHz) (Ta=25°C; AVDD=4.75 ∼ 5.25V; DVDD=3.0 ∼ 5.25V; DFS1 = “L”, DFS0 = “L”) Parameter ADC Digital Filter (Decimation LPF): −0.005dB Passband (Note 8) −0.02dB −0.06dB −6.0dB Stopband Passband Ripple Stopband Attenuation Group Delay (Note 9) ...
Page 10
ASAHI KASEI FILTER CHARACTERISTICS (fs=192kHz) (Ta=25°C; AVDD=4.75 ∼ 5.25V; DVDD=3.0 ∼ 5.25V; DFS1 = “H”, DFS0 = “L”) Parameter ADC Digital Filter (Decimation LPF): −0.005dB Passband (Note 8) −0.02dB −0.06dB −6.0dB Stopband Passband Ripple Stopband Attenuation Group Delay (Note 9) ...
Page 11
ASAHI KASEI (Ta=25°C; AVDD=4.75 ∼ 5.25V; DVDD=3.0 ∼ 5.25V; C Parameter Master Clock Timing Frequency Pulse Width Low Pulse Width High LRCK Frequency Normal Speed Mode Double Speed Mode Quad Speed Mode Duty Cycle Slave mode Master mode Audio Interface ...
Page 12
ASAHI KASEI Timing Diagram MCLK tCLKH LRCK BICK tBCKH LRCK tBLR BICK tLRS SDTO MS0406-E-00 1/fCLK tCLKL 1/fs tBCK tBCKL Clock Timing tLRB tBSD Audio Interface Timing (Slave mode [AK5385B] VIH VIL VIH VIL VIH VIL VIH ...
Page 13
ASAHI KASEI LRCK tMBLR BICK SDTO PDN SDTO PDN MS0406-E-00 dBCK tBSD Audio Interface Timing (Master mode) tPDV tPD Power Down & Reset Timing - 13 - [AK5385B] 50%DVDD 50%DVDD 50%DVDD VIH VIL 50%DVDD VIL 2005/08 ...
Page 14
ASAHI KASEI System Clock MCLK (256fs/384fs/512fs), BICK (48fs∼) and LRCK (fs) clocks are required in slave mode. The LRCK clock input must be synchronized with MCLK, however the phase is not critical. Table 1 shows the relationship of typical sampling ...
Page 15
ASAHI KASEI Audio Interface Format Two kinds of data formats can be chosen with the DIF pin (Table 4). In both modes, the serial data is in MSB first, 2’s complement format. The SDTO is clocked out on the falling ...
Page 16
ASAHI KASEI Digital High Pass Filter The ADC has a digital high pass filter for DC offset cancellation. The cut-off frequency of the HPF is 1.0Hz (@fs=48kHz) and scales with sampling rate (fs). HPF is controlled by HPFE pin. If ...
Page 17
ASAHI KASEI Figure 4 shows the system connection diagram. An evaluation board is available which demonstrates application circuits, the optimum layout, power supply arrangements and measurement results. 10µ 0.22µ Digital Supply 3.0 ~ 5.25V 10µ Reset Note: - AVSS, BVSS ...
Page 18
ASAHI KASEI 1. Grounding and Power Supply Decoupling The AK5385B requires careful attention to power supply and grounding arrangements. Alternatively if AVDD and DVDD are supplied separately, the power up sequence is not critical. AVSS, BVSS and DVSS of the ...
Page 19
ASAHI KASEI 4. External Analog Circuit Examples Figure 6 shows an input buffer circuit example 1. This is a full-differential input buffer circuit with an inverted-amp (gain: −10dB). The capacitor of 10nF between LIN+/− (RIN+/−) decreases the clock feed through ...
Page 20
ASAHI KASEI 5. Measurement Example Figure 8 shows the S/(N+D) vs. VREF capacitor that is connected between VREFL/R pins and AVSS pin with the 0.1µF capacitor in parallel. X-AXIS is the capacity for VREF; Y-AXIS is S/(N+D). [Measurement Condition] - ...
Page 21
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. Material & Lead finish Package molding compound: Lead frame material: Lead frame surface treatment: MS0406-E-00 PACKAGE (AK5385BVF ...
Page 22
ASAHI KASEI 28pin SOP (Unit: mm) 1.095TYP 18.7 ± 0.3 1.27 0.10 0.4 ± 0.1 Material & Lead finish Package molding compound: Lead frame material: Lead frame surface treatment: MS0406-E-00 PACKAGE (AK5385BVS) 0.12 M Epoxy Cu Solder (Pb free) plate ...
Page 23
ASAHI KASEI XXXB : Lot number (X : Digit number Alpha character) YYYYC : Assembly date (Y : Digit number Alpha character) MS0406-E-00 MARKING (AK5385BVF) AKM AK5385BVF XXXBYYYYC XXXBYYYYC Date code identifier - 23 - [AK5385B] ...
Page 24
ASAHI KASEI XXXB : Lot number (X : Digit number Alpha character) YYYYC : Assembly date (Y : Digit number Alpha character) Date (YY/MM/DD) Revision 05/08/10 00 • These products and their specifications are subject to ...