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AK4342 Datasheet, PDF (1/43 Pages) Asahi Kasei Microsystems – 24-Bit Stereo DAC with HP-AMP & 2V Line-Out | |||
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ASAHI KASEI
[AK4342]
AK4342
24-Bit Stereo DAC with HP-AMP & 2V Line-Out
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 âclick-freeâ power-on/off, a
mute control and delivers 62.5mW of power at 16⦠@ 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 âΣ 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, 2âs Complement
- I2S, 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 â 48dB, Variable Step Size
- Lineout: 0dB to â 31dB, 1dB step
 Digital Linear Attenuator
 Digital Soft Mute
 Analog Mixing Circuit
 µP Interface: 3-wire/I2C (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 @16â¦, 3.3V
- THD+N: -60dB @ 25mW
- Dynamic Range: 95dB
 Power Supply:
- DAC & Output Buffers: 2.7V â¼ 3.6V
- Digital Interface: 1.6V â¼ 3.6V
 Power Supply Current: 30.5mA (Headphone amp off)
 Ta: â30 â¼ 85°C
 Package: 32pin QFN
MS0506-E-02
-1-
2006/07
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