AK4375 English Datasheet - Brief

= Preliminary =
Low-Power Advanced 32-bit DAC with HP/SRC
1. General Description
The AK4375 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 AK4375 also has a jitter cleaner with a
built-in SRC and a X’tal. The AK4375 is available in a 36pin 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
- Slave mode
- Sampling Frequency:
8k, 11.025k, 12k, 16k, 22.05k, 24k, 32k, 44.1k, 48k, 64k, 88.2k, 96k, 128k,
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. X’tal Oscillator
8. Jitter Cleaner with a built-in SRC
9. P I/F: I2C(400kHz)
10. Operation Temperature Range: Ta = 40 ~ 85C
11. Power Supply:
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
12. Package: 36-pin CSP (2.371 × 2.623mm, 0.4mm pitch)
Rev. 0.1-PB
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More detail product information is available, please contact our
sales office or authorized distributors.
Rev. 0.1-PB
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.
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application examples of AKM Products. AKM neither makes warranties or representations with
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extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may
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but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry,
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Rev. 0.1-PB