ak4495数据手册资料.pdf

[AK4495S] MS1560-E-00 2013/11 - 1 - 1. General Description The AK4495S is a 32-bit DAC, which corresponds to high-performance, high sound quality digital audio systems such as DVD-Audio and BD. An internal circuit includes newly developed 32-bit digital filters for better sound quality, achieving low distortion characteristics and wide dynamic range. The AK4495S has full differential SCF outputs, removing the need for AC coupling capacitors and increasing performance for systems with excessive clock jitter. The AK4495S accepts up to 768kHz PCM data and 5.6MHz DSD data, ideal for a wide range of applications including Network Audio and SACD. 2. Features  128x Over sampling  Sampling Rate: 30kHz   768kHz  32-bit 8x Digital Filter - Ripple:  0.005dB, Attenuation: 100dB - Short Delay Sharp Roll-off, GD=6.25/fs - Short Delay Slow Roll-off, GD=5.3/fs - Sharp Roll-off - Slow Roll-off - Super Slow Roll-off  High Tolerance to Clock Jitter  Low Distortion Differential Output  2.8MHz, 5.6MHz DSD Input Support  Digital De-emphasis for 32, 44.1, 48kHz sampling  Soft Mute  Digital Attenuator (255 levels and 0.5dB step)  Mono Mode  External Digital Filter Mode  THD+N: -101dB  DR, S/N: 123dB (Mono mode: 126dB, Analog Block Power Supply 7V)  I/F Format: 24/32bit MSB justified, 16/20/24/32bit LSB justified, I2S, DSD  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  Power Supply: DVDD=AVDD=3.0  3.6V, VDD1/2=4.75   7.2V  Digital Input Level: CMOS  Package: 44pin LQFP AK4495S Quality-oriented Premium 32-Bit 2ch DAC [AK4495S] MS1560-E-00 2013/11 - 2 - 3. Table of Contents 1. General Description . 1 2. Features 1 3. Table of Contents 2 4. Block Diagram and Functions . 4 5. Pin Configuration and Functions . 5 ■ Ordering Guide . 5 ■ Pin Configuration . 5 ■ Functions 6 ■ Handling of Unused Pin . 8 6. Absolute Maximum Ratings 9 7. Recommended Operation Conditions 9 8. Electrical Characteristics . 10 ■ Handling of Unused Pin . 10 ■ Sharp Roll-Off Filter Characteristics (fs = 44.1kHz) . 11 ■ Sharp Roll-Off Filter Characteristics (fs = 96kHz) 11 ■ Sharp Roll-Off Filter Characteristics (fs = 192kHz) 11 ■ Short Delay Sharp Roll-Off Filter Characteristics (fs = 44.1kHz) . 12 ■ Short Delay Sharp Roll-Off Filter Characteristics (fs = 96kHz) 12 ■ Short Delay Sharp Roll-Off Filter Characteristics (fs = 192kHz) 12 ■ Slow Roll-Off Filter Characteristics (fs = 44.1kHz) 13 ■ Slow Roll-Off Filter Characteristics (fs = 96kHz) . 13 ■ Slow Roll-Off Filter Characteristics (fs = 192kHz) . 13 ■ Short Delay Slow Roll-Off Filter Characteristics (fs = 44.1kHz) 14 ■ Short Delay Slow Roll-Off Filter Characteristics (fs = 96kHz) . 14 ■ Short Delay Slow Roll-Off Filter Characteristics (fs = 192kHz) . 14 ■ DC Characteristics 15 ■ Switching Characteristics . 16 ■ Timing Diagram . 18 9. Functional Descriptions . 22 ■ D/A Conversion Mode . 22 ■ System Clock 22 ■ Audio Interface Format 28 ■ D/A Conversion Mode Switching Timing 32 ■ De-emphasis Filter 32 ■ Output Volume (PCM, DSD) . 32 ■ Zero Detection (PCM, DSD) 33 ■ Mono Output (PCM, DSD, EX DF I/F) . 33 ■ Sound Quality Control (PCM, DSD, Ex DF I/F) 33 ■ Soft Mute Operation (PCM, DSD) . 34 ■ System Reset 34 ■ Power ON/OFF timing . 35 ■ Reset Function 36 ■ Synchronize Function . 38 ■ Register Control Interface 40 ■ Register Map 45 ■ Register Definitions 45 10. Recommended External Circuits . 51 11. Package 55 [AK4495S] MS1560-E-00 2013/11 - 3 - ■ Outline Dimensions 55 ■ Material Note 1) Parameter Symbol min max Unit Power Supplies: Analog Analog Digital |AVSS  DVSS| (Note 2) AVDD VDDL/R DVDD GND 0.3 0.3 0.3 - 4.6 7.5 4.6 0.3 V V V V Input Current, Any Pin Except Supplies IIN - 10 mA Digital Input Voltage VIND 0.3 DVDD+0.3 V Ambient Temperature (Power applied) Ta 40 85 C Storage Temperature Tstg 65 150 C Note 1. All voltages with respect to ground. Note 2. AVSS, DVSS, VSSL and VSSR 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. 7. Recommended Operation Conditions (AVSS=DVSS=VSSL=VSSR =0V; Note 1) Parameter Symbol min typ max Unit Power Supplies (Note 3) Analog Analog Digital AVDD VDDL/R DVDD 3.0 4.75 3.0 3.3 5.0 3.3 3.6 7.2 3.6 V V V Voltage Reference (Note 4) “H” voltage reference “L” voltage reference VREFH  VREFL VREFHL/R VREFLL/R VREF VDDL/R0.5 3.0 - VSS - VDDL/R - VDDL/R V V V Note 1. All voltages with respect to ground. Note 3. The power up sequence between AVDD, VDDL/R and DVDD is not critical. Note 4. The analog output voltage scales with the voltage of (VREFH  VREFL). AOUT (typ.@0dB) = (AOUT+)  (AOUT) = 2.8Vpp  (VREFHL/R  VREFLL/R)/5. * AKM assumes no responsibility for the usage beyond the conditions in this data sheet. [AK4495S] MS1560-E-00 2013/11 - 10 - 8. Electrical Characteristics ■ Han。