ASAHI KASEI
[AK4343]
AK4343
Stereo DAC with HP/RCV/SPK-AMP
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
MS0478-E-01
-1-
2006/10
AKM [ ASAHI KASEI MICROSYSTEMS ]
