[AK4376] AK4376 Low-Power Advanced 32-bit DAC with HP 1. General Description The AK4376 is stereo advanced 32-bit high sound quality audio DAC with a built-in ground-referenced headphone amplifier. An internal circuit newly developed 32-bit digital filters for better sound quality, achieving low distortion characteristics and wide dynamic range. The sampling frequency supports up to 384 kHz. The AK4376 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 types of Operation Mode (High Performance Mode / Low Power Mode) 2. Ground-referenced Class-G Stereo Headphone-Amp - Output Power: 25 mW @ 32Ω, THD+N < 60 dB 40 mW @ 16Ω, THD+N < 60 dB - THD+N: 106 dB - S/N: 125 dB - Output Noise Level: 125 dBV (Analog Volume 14 dB) - Analog Volume: +6 to 20 dB & Mute, 2 dB Step - Ground Loop Noise Cancellation 3. Digital Audio interface - Master/Slave mode - Sampling Frequency: Slave Mode: 8 k, 11.025 k, 12 k, 16 k, 22.05 k, 24 k, 32 k, 44.1 k, 48 k, 64 k, 88.2 k, 96 k, 128 k,176.4 k, 192 kHz, 256 k, 352.8 k, 384 kHz Master Mode: 8 k, 11.025 k, 12 k, 16 k, 22.05 k, 24 k, 32 k, 44.1 k, 48 k, 64 k, 88.2 k, 96 k, 176.4 k, 192 kHz - Interface Format: 32/24/16-bit I2S/MSB justified 4. Power Management 5. PLL 6. X’tal Oscillator 7. μP I/F: I2C (400 kHz) 8. Ta = 40 to 85C 9. Power Supply: AVDD (DAC, PLL): 1.7 to 1.9 V CVDD (HP-Amp, Charge Pump): 1.7 to 1.9 V LVDD (LDO2 for Digital Core): 1.7 to 1.9 V (built-in LDO) TVDD (Audio I/F): 1.65 to 3.6 V 10. Package: 36-pin CSP (2.74 x 2.56 mm, 0.4 mm pitch) 015014103-E-00-PB 2015/11 -1- [AK4376] LDO2 VCOM VSS4 VSS2 CVDD VSS1 AVDD VSS3 LVDD VDD12 3. Block Diagram and Functions for Digital Logic PDN TVDD TESTI1 2 SCL IC Interface SDA TESTI2 Control Register TESTO LRCK MIX Audio Interface BCLK DATT 32-bit SDATA HP (w/ Vol) Stereo DAC HPL HPGND HPR DACMCLK for HP-Amp for DAC (Class-G) Charge Pump1 & LDO1P/N Charge MCKI PLLCLK VEE2 VCC2 CP2B CN2B Pump2 CP2A CN2A RVEE VEE1 RAVDD XTO XTI X’tal OSC CP1 CN1 PLL BCLK Figure 1. Block Diagram 015014103-E-00-PB 2015/11 -2- [AK4376] 4. Package ■ Outline Dimensions 36-pin CSP (Unit: mm) Top View Bottom View (0.022 ±0.004) 2.56 ±0.03 A 0.4 B 0.2 6 2.74 ±0.03 0.4 5 4 0.2 3 2 1 1 F C 0.03 0.519 0.046 0.382 0.016 0.107 ~ 0.167 A E D C B 36 x (0.204~0.264) A 0.015 M C A B C ■ Material and Lead Finish Package molding compound: Epoxy Resign, Halogen (Br, Cl) Free Lead frame material: SnAgCuNi 015014103-E-00-PB 2015/11 -3- [AK4376] ■ Marking 4376 XXXX 1 A XXXX: Date code (4 digits) Pin #A1 indication 5. Ordering Guide AK4376ECB AKD4376 40 to 85 C 36-pin CSP (0.4 mm pitch) Evaluation board for AK4376 6. Revision History Date (Y/M/D) 15/11/27 Revision 00 Reason First Edition Page Contents 015014103-E-00-PB 2015/11 -4- [AK4376] Thank you for your access to AKM products information. More detail product information is available, please contact our sales office or authorized distributors. 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. 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Though AKM works continually to improve the Product’s quality and reliability, you are responsible for complying with safety standards 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. 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