[AK4375A] AK4375A Low-Power Advanced 32-bit DAC with HP/SRC 1. General Description The AK4375A is a stereo advanced 32-bit high sound quality audio DAC with a built-in ground-referenced headphone amplifier. An internal circuit is newly developed 32-bit digital filters for better sound quality, achieving low distortion characteristics and wide dynamic range. The AK4375A also has a jitter cleaner with a built-in SRC and a X’tal. The AK4375A is available in a 36-pin CSP package, utilizing less board space than competitive offerings. 2. Features 1. Stereo High Sound Quality Low Power Advanced 32-bit DAC - 4 types of Digital Filter for Sound Color Selection 2. Ground-referenced Class-G Stereo Headphone-Amp - Output Power: 25mW @ 32, 40mW @ 16, THD+N = 0.1% - S/(N+D): 99dB - S/N: 110dB - Output Noise Level: 119dBV (Analog Volume -14dB) - Analog Volume: +6 ~ 40dB & Mute, 2dB Step - Ground Loop Noise Cancellation 3. Digital Audio interface - Master / Slave Mode - Sampling Frequency: Slave Mode: 8k, 11.025k, 12k, 16k, 22.05k, 24k, 32k, 44.1k, 48k, 64k, 88.2k, 96k, 128k, 176.4k, 192kHz Master Mode: 8k, 11.025k, 12k, 16k, 22.05k, 24k, 32k, 44.1k, 48k, 64k, 88.2k, 96k, 176.4k, 192kHz - Interface Format: 32/24/16-bit I2S/MSB justified 4. Asynchronous Sample Rate Converter: - Up sample: up to ×6 - Down sample: down to ×1/6 - 4 types of Digital Filter for Sound Color Selection 5. Power Management 6. PLL 7. Jitter Cleaner with a built-in SRC and X’tal Oscillator 8. P I/F: I2C(400kHz) 9. Operation Temperature Range: Ta = 40 ~ 85C 10. Power Supply: AVDD (DAC, PLL): 1.7 to 1.9V CVDD (HP-Amp, Charge Pump): 1.7 to 1.9V LVDD (LDO2 for Digital Core): 1.7 to 1.9V (built-in LDO) TVDD (Audio I/F): 1.65 to 3.6V 11. AK4375 Register / Pin Compatible 12. Package: 36-pin CSP (2.371 × 2.623mm, 0.4mm pitch) 014011741-E-00-PB 2014/11 -1- [AK4375A] LDO2 VCOM VSS4 VSS2 CVDD VSS1 AVDD VSS3 VDD12 LDO2E LVDD 3. Block Diagram and Functions for Digital Logic PDN TVDD TESTI SCL I2C Interface SDA Control Register TESTO Audio Interface BCLK MIX LRCK DATT 32bit SRC SDATA HP (w/ Vol) Stereo DAC HPL HPGND HPR SRCCLK for HP-Amp for DAC (Class-G) Charge Pump1 & LDO1P/N Charge MCKI VEE2 VCC2 CP2B CN2B Pump2 CP2A CN2A RVEE VEE1 XTO XTI X’tal OSC PLL RAVDD BCLK CP1 CN1 DAC CLK Figure 1. AK4375A Block Diagram 014011741-E-00-PB 2014/11 -2- [AK4375A] Thank you for your access to AKM products information. More detail product information is available, please contact our sales office or authorized distributors. 014011741-E-00-PB 2014/11 -3- [AK4375A] 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 included in 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 any 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 INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS. 2. 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