
ASAHI KASEI
[AK4343]
MS0478-E-01
2006/10
- 1 -
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=50/15
μ
s, 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@32
(AVDD=3.3V)
Stereo Headphone-Amp
- S/(N+D): 70dB@7.5mW, S/N: 90dB
- Output Power: 70mW@16
(HVDD=5V), 62mW@16
(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@8
(HVDD=5V), 400mW@8
(HVDD=3.3V)
3.0Vrms@50
(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
Stereo DAC with HP/RCV/SPK-AMP
AK4343