GENERAL DESCRIPTION

The AK4343 is a stereo DAC with a built-in Headphone-Amplifier, Receiver-Amplifier and 1.2W output Speaker-Amplifier. The AK4343 features analog mixing circuits and PLL that allows easy interfacing in mobile phone and portable A/V player designs. The AK4343 is available in a 32pin QFN, utilizing less board space than competitive offerings.

FEATURES

1. Playback Function

   • Digital De-emphasis Filter (tc=50/15µs, fs=32kHz, 44.1kHz, 48kHz)

   • Bass Boost

   • Soft Mute

   • Digital Volume (+12dB ∼ −115.0dB, 0.5dB Step, Mute)

   • Digital ALC (Automatic Level Control) (+36dB ∼ −54dB, 0.375dB Step, Mute)

   • Stereo Separation Emphasis

   • Programmable EQ

   • Stereo Line Output

      - Performance: S/(N+D): 88dB, S/N: 92dB

   • Mono Receiver-Amp

      - BTL Output

      - Output Power: 30mW@32Ω (AVDD=3.3V)

   • Stereo Headphone-Amp

      - S/(N+D): 70dB@7.5mW, S/N: 90dB

      - Output Power: 70mW@16Ω (HVDD=5V), 62mW@16Ω (HVDD=3.3V)

      - Pop Noise Free at Power ON/OFF

   • Mono Speaker-Amp

      - S/(N+D): 50dB@240mW, S/N: 90dB

      - BTL Output

      - Availbable for both Dynamic and Piezo Speaker

      - Output Power: 1.2W@8Ω (HVDD=5V), 400mW@8Ω (HVDD=3.3V), 3.0Vrms@50Ω (HVDD=5V)

   • Analog Mixing:

      - 3 Stereo Input

      - Gain Amplifier (+32dB/+26dB/+20dB or 0dB)

2. Power Management

3. Master Clock:

   (1) PLL Mode

      • Frequencies:

         11.2896MHz, 12MHz, 12.288MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)

         1fs (LRCK pin)

         32fs or 64fs (BICK pin)

   (2) External Clock Mode

      • Frequencies: 256fs, 512fs or 1024fs (MCKI pin)

4. Output Master Clock Frequencies: 32fs/64fs/128fs/256fs

5. Sampling Rate:

   • PLL Slave Mode (LRCK pin): 7.35kHz ∼ 48kHz

   • PLL Slave Mode (BICK pin): 7.35kHz ∼ 48kHz

   • PLL Slave Mode (MCKI pin): 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz

   • PLL Master Mode: 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz

   • EXT Master/Slave Mode:

7. 35kHz ∼ 48kHz (256fs), 7.35kHz ∼ 26kHz (512fs), 7.35kHz ∼ 13kHz (1024fs)

6. µP I/F: 3-wire Serial, I2C Bus (Ver 1.0, 400kHz High Speed Mode)

7. Master/Slave mode

8. Audio Interface Format: MSB First, 2’s complement

• 16bit MSB justified, 16bit LSB justified, 16-24bit I2S, DSP Mode

9. Ta = −30 ∼ 85°C (SPK-Amp=OFF)

           −30 ∼ 70°C (SPK-Amp=ON)

10. Power Supply:

   • AVDD, DVDD: 2.6 ∼ 3.6V (typ. 3.3V)

   • HVDD: 2.6 ∼ 5.25V (typ. 3.3V/5.0V)

11. Package: 32pin QFN (5mm x 5mm, 0.5mm pitch)

12. Pin/Register Compatible with AK4642EN