● Product Status: Not Recommended for New Design (NRND)
● Replacement Part #: AK4127VF (SRC) +AK4118AEQ (DIR)


96kHz Asynchronous Sample Rate Converter with PLL and DIR

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  • Digi-Key
  • Evaluation Board Manual
  • Data Sheet


The AK4122A is a digital sample rate converter (SRC) with the digital audio receiver (DIR). The input sample rate ranges from 8kHz to 96kHz. The output sample rate is 32kHz, 44.1kHz, 48kHz or 96kHz. By using the AK4122A, the system can take very simple configuration because the AK4122A has an internal PLL and does not need any master clock at slave mode. Then the AK4122A is suitable for the application interfacing to different sample rates like Car Audio, DVD recorder, etc.

Key Features

1. SRC

• Asynchronous Sample Rate Converter

• Input Sample Rate Range (fsi) : 8kHz to 96kHz

• Output Sample Rate (fso) : 32kHz, 44.1kHz, 48kHz, 96kHz

• Input to Output Sample Rate Ratio : 0.33 to 6

• THD+N : -113dB

• I/F format : MSB justified, LSB justified (16/24bit) and I2S compatible

• Clock for Master mode : 256/384/512/768fs

• SRC Bypass mode

• Soft Mute Function

2. DIR

• 4-Channel Inputs Selector & 1-Channel Through Output

• AES3, IEC60958, S/PDIF, EIAJ CP1201 Compatible

• Low Jitter Analog PLL

• PLL Lock Range : 32kHz to 96kHz

• Auto detection

- Non-PCM Bit Stream

- DTS-CD Bit Stream

- Validity Flag

- Sampling Frequency (32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz)

- Unlock & Parity Error

- DAT Start ID

• 40-bit Channel Status Buffer

• Burst Preamble bit Pc, Pd Buffer for Non-PCM bit streams

• Q-subcode Buffer for CD bit streams

3. 4-wire Serial µP Interface

4. Power Supply

• AVDD: 3.0 to 3.6V (typ. 3.3V)

• DVDD: 3.0 to 3.6V (typ. 3.3V)

5. Ta = -10 to 70°C

6. Package : 48pin LQFP

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