AK4634 Datasheet, PDF (1/77 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

[AK4634]
= Preliminary =
AK4634
16-Bit Mono CODEC with ALC & MIC/SPK-AMP
GENERAL DESCRIPTION
The AK4634 is a 16-bit mono CODEC with Microphone-Amplifier and Speaker-Amplifier. Input circuits
include a Microphone-Amplifier and an ALC (Automatic Level Control) circuit. Output circuits include a
Speaker-Amplifier and Mono Line Output. The AK4634 is suitable for a moving picture of Digital Still
Camera and etc. This speaker-Amplifier supports a Piezo Speaker. The AK4634 is housed in a
space-saving 32-pin QFN 5mm x 5mm package.
FEATURE
1. 16-Bit Delta-Sigma Mono CODEC
2. Recording Function
• 1ch Mono Input
• MIC Amplifier: (0dB/+3dB/+6dB/+10dB/ +17dB/+20dB/+23dB/+26dB/+29dB/+32dB)
• Digital ALC (Automatic Level Control)
(+36dB ∼ -54dB, 0.375dB Step, Mute)
• ADC Performance (MIC-Amp=+20dB)
- S/(N+D): 84dB
- DR, S/N: 86dB
• Wind-noise Reduction Emphasis
• 5 band notch Filter
3. Playback Function
• Digital ALC (Automatic Level Control)
(+36dB ∼ -54dB, 0.375dB Step, Mute)
• Mono Line Output: S/(N+D) : 85dB, S/N : 93dB
• Mono Class-D Speaker-Amp
- BTL Output
- Output Power: 400mW @ 8Ω (SVDD=3.3V)
- S/(N+D): 55dB (150mW@8Ω)
• Beep Generator
4. Power Management
5. PLL Mode:
• Frequencies:
12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)
1fs (FCK pin)
16fs, 32fs or 64fs (BICK pin)
6. EXT Mode:
• Frequencies: 256fs, 512fs or 1024fs (MCKI pin)
7. Sampling Rate:
• PLL Slave Mode (FCK 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 Slave Mode / EXT Master Mode:
7.35kHz ~ 48kHz (256fs), 7.35kHz ~ 26kHz (512fs), 7.35kHz ~ 13kHz (1024fs)
8. Output Master Clock Frequency: 256fs
9. Serial μP Interface: 3-wire, I2C Bus (Ver 1.0, 400kHz High Speed Mode)
Rev. 0.5
2007/10
-1-