AK4456VN AKM | Alldatasheet
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[AK4456] Rev. 0.0 2014/06 - 1 - 1.General Description AK4456 is a 32 -bit DAC which corresponds to DVD-audio systems. An internal circuit includes newly developed 32 -bit Digital Filter for better sound quality achieving low distortion characteristics and wide dynamic range. The AK4456 has full differential SCF outputs, removing the need for AC coupling capacitors and increasing performance for systems with excessive clock jitter. The AK4456 accepts 768kHz PCM data and 1 -bit DSD data, ideal for a wide range of appli cations includin g DVD -Audio, SACD and car audio surround system. 2.Features (1) 256x Over sampling (2) Sampling Rate: 8kHz 768kHz (3) 32Bit 8x Digital Filter - Ripple: 0.0032dB, Attenuation: 80dB - High Quality Sound Short Delay Option; GD=6.25/fs and GD=5.3/fs - Sharp Roll-Off Filter - Slow Roll-Off Filter - Super Slow Roll Off (4) High Tolerance to Clock Jitter (5) Low Distortion Differential Output (6) DSD data input (7) Daisy Chain (8) Digital De-emphasis for 32, 44.1, 48kHz sampling (9) Soft Mute (10) Digital Attenuator (255 levels and 0.5dB step) (11) Stereo Mode (12) THD+N: -107dB (13) DR, S/N: 115dB (14) I/F Format: - 24/32bit MSB justified - 16/20/24/32bit - LSB justified - I2S - DSD - TDM (15) 3-wire Serial and I2C μP I/F (16) Master Clock: - 30kHz ~ 32kHz: 1152fs - 30kHz ~ 54kHz: 512fs or 768fs - 30kHz ~ 108kHz: 256fs or 384fs - 108kHz ~ 216kHz: 128fs or 192fs ~ 384kHz:64fs or 128fs ~ 768kHz:64fs (17) Power Supply: - TVDD= 1.7 3.6V - AVDD=3.0 5.5V (18) Digital Input Level: CMOS (19) Package: 48-pin QFN AK4456 115dB 768kHz 32-bit 6ch Premium DAC = Preliminary =
Figure 1. Block Diagram
[AK4456] Rev. 0.0 2014/06 - 3 - 4.Absolute Maximum Ratings (AVSS =DVSS =0V; Note 1) Parameter Symbol min max Unit Power Supplies: Analog Digital |AVSS DVSS| AVDD TVDD GND 0.3 0.3 6.0 4.0 0.3 V V V Input Current, Any Pin Except Supplies IIN - 10 mA Digital Input Voltage VIND 0.3 TVDD+0.3 V Ambient Temperature (Power applied) When the back tab is connected to VSS When the back tab is open Ta Ta 40 40 105 Storage Temperature Tstg 65 150 C Note 1. All voltages with respect to ground. Note 2. AVSS and DVSS must be connected to the same analog ground plane. WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. 5.Recommended Operation Conditions (AVSS =DVSS =0V; Note 1) Parameter Symbol min typ max Unit Power Supplies Analog (LDOE pin= “L”)(Note 3) I/O buffer Digital (LDOE pin = “H”)(Note 4) I/O buffer AVDD TVDD VDD18 TVDD 3.0 VDD18 1.7 3.0 5.0 1.8 1.8 3.3 5.5 3.6 1.98 3.6 V V V V Voltage Reference (Note 5) “H” voltage reference “L” voltage reference VREFH1-4 VREFL1-4 AVDD0.5 AVSS AVDD V V Note 3. TVDD must be powered up before VDD18 when the LDOE pin = “L”.The power up sequence between AVDD and TVDD or AVDD and VDD18 is not critical. Note 4. When LDOE pin = “H”, the internal LDO supplies 1.8V (typ). The power up sequences between AVDD and TVDD, AVDD and VDD18 are not critical. Note 5. VREFL1-3 pins must be connected to AVSS. Connect a capacitor which is 10µF or more to the each VREFH1-3 pins. * AKM assumes no responsibility for the usage beyond the conditions in this data sheet.
[AK4456] Rev. 0.0 2014/06 - 4 - 6.Analog Characteristics (Ta=25C: TVDD=3.3V, AVDD=5.0V: AVSS= DVSS=0V: VREFH1/2/3=AVDD, VREFL1/2/3= AVSS: fs=44.1kHz: BICK=64fs: Signal Frequency=1kHz: 24-bit Input Data: RL 2k: measurement bandwidth = 20Hz ~ 20kHz, unless otherwise specified.) Parameter min typ max Unit Resolution - - 32 bit Dynamic Characteristics (Note 6) THD+N fs=44.1kHz BW=20kHz 0dBFS 60dBFS -107 -52 -100 dB dB fs=96kHz BW=40kHz 0dBFS 60dBFS -104 -49 dB dB fs=192kHz BW=40kHz BW=80kHz 0dBFS 60dBFS 60dBFS -104 -49 -46 dB dB dB Dynamic Range ( 60dBFS with A-weighted) 111 115 - dB S/N (A-weighted) 111 115 - dB Interchannel Isolation (1kHz) 100 110 - dB DC Accuracy Interchannel Gain Mismatch - 0 0.3 dB Gain Drift (Note 7) - 20 - ppm/C Output Voltage (Note 8) 2.65 2.8 2.95 Vpp Load Resistance (Note 9) 2 - - k Load Capacitance (Note 9) - - 30 pF Power Supplies Power Supply Current Normal operation (PDN pin = “H”, input opposite phase to each Lch and Rch) AVDD TVDD (fs = 44.1kHz) TVDD (fs = 96kHz) TVDD (fs = 192kHz) TBD TBD TBD TBD TBD TBD mA mA mA mA Power down (PDN pin = “L”) (Note 10) AVDD+TVDD - 1 100 A Note 6. Measured by Audio Precision, System Two. Averaging mode. Note 7. The voltage on (VREFH1 VREFL1) is held +5V externally. Note 8. The full scale voltage when applying a 1kHz sine wave (0dB) in PCM mode, or when applying a 1kHz sine wave (25~75% duty) in DSD mode. Output voltage scales with the voltage of (VREFH1 VREFL1). DAC1: AOUT (typ.@0dB) = (AOUT+) (AOUT) = 2.8Vpp (VREFH1 VREFL1)/5 Note 9. Regarding Load Resistance, AC load is 2k (min) with a DC cut capacitor. DC load is 2 k (min) without a DC cut capacitor. The load resistance value is with respect to ground. Analog characteristics are sensitive to capacitive load that is connected to the output pin. Therefore the capacitive load must be minimized. Note 10. In the power down mode. All other digital input pins including clock pins (MCLK, BICK and LRCK) are held DVSS.
[AK4456] Rev. 0.0 2014/06 - 5 - IMPORTANT NOTICE 0. Asahi Kasei Microdevices Corporation (“AKM”)reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products. 1. All information includedin this document are provided only to illustrate the operation and application examples of AKM Products . AKM neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or a ny other rights of AKM or any third party with respect to the information in this document. You are fully responsible for use of such information contained in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR ANY LOSSES INC URRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS. 2. The Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact, including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electricpower, and equipment used in finance-related fields. Do not use Product for the above use unless specifically agreed by AKM in writing. 3. Though AKM works continually to improve the Product’s quality and reliability,you are responsible for complying with safety standar ds and for providing adequate designs and safeguards for your hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. 4. Do not use or otherwise make available the Product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). When exporting the Products or related technology or any information contained in this document, you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations. The Products and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 5. Please contact AKM sales representative for details as to environmental matters such as the RoHS compatibility of the Product. Please use the Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. AKM assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 6. Resale of the Product with provisions different from the statement and/or technical features set forth in this document shall immediately void any warranty granted by AKM for the Product and shall not create or extend in any manner whatsoever, any liability of AKM. 7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of AKM.