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AK4342EN Datasheet(PDF) 1 Page - Asahi Kasei Microsystems |
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AK4342EN Datasheet(HTML) 1 Page - Asahi Kasei Microsystems |
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1 / 43 page  ASAHI KASEI [AK4342] MS0506-E-02 2006/07 - 1 - GENERAL DESCRIPTION The AK4342 is a 24-bit stereo DAC with 2Vrms lineout, an integrated headphone amplifier, and an auxiliary line output. The AK4342 features an analog mixing circuit that enables a simple interface to external analog audio sources. The integrated headphone amplifier features “click-free” power-on/off, a mute control and delivers 62.5mW of power at 16 Ω @ 3.3V. The AK4342 is controlled via an I2C or 3-wire interface, and is available in a 32-pin QFN package. FEATURE Multi-bit 24-bit ∆Σ DAC Sampling Rate: 8kHz to 96kHz 8 times Oversampling FIR interpolator - Passband: 20kHz - Passband Ripple: ±0.02dB - Stopband Attenuation: 54dB Audio I/F Format: MSB First, 2’s Complement - I 2S, 24bit MSB justified, 24bit/20bit/16bit LSB justified Master Clock: - Normal Speed Mode: 256fs/384fs/512fs/768fs - Double Speed Mode: 128fs/192fs/256fs/384fs - Half Speed Mode: 512fs/768fs Digital De-emphasis Filter: 32kHz, 44.1kHz and 48kHz Analog volume control: - Headphone: +6dB to – 48dB, Variable Step Size - Lineout: 0dB to – 31dB, 1dB step Digital Linear Attenuator Digital Soft Mute Analog Mixing Circuit µP Interface: 3-wire/I 2C (400kHz mode) Pop Noise Free at Power-ON/OFF and Mute DAC Performance (Lineout) - THD+N: -88dB - Dynamic Range: 100dB - Output Level: 2Vrms DAC Performance (Aux-Out) - THD+N: -87dB - Dynamic Range: 95dB Headphone Amplifier (Cap-less) - Output Power: 62.5mW x 2ch @16 Ω, 3.3V - THD+N: -60dB @ 25mW - Dynamic Range: 95dB Power Supply: - DAC & Output Buffers: 2.7V ∼ 3.6V - Digital Interface: 1.6V ∼ 3.6V Power Supply Current: 30.5mA (Headphone amp off) Ta: −30 ∼ 85°C Package: 32pin QFN AK4342 24-Bit Stereo DAC with HP-AMP & 2V Line-Out |
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