AK4635 Datasheet, PDF (1/81 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP

[AK4635]
= Preliminary =
AK4635
16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
GENERAL DESCRIPTION
The AK4635 is a 16-bit mono CODEC with Microphone-Amplifier, Speaker-Amplifier and Video-
Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Automatic Level Control) circuit.
Output circuits include a Speaker-Amplifier and Mono Line Output. Video circuits include a LPF and
Video-Amplifier. The AK4635 suits a moving picture of Digital Still Camera and etc. This
speaker-Amplifier supports a Piezo Speaker. The AK4635 is housed in a space-saving 29-pin Wafer
Level CSP 2.5mm x 3.0mm 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. Video Function
• A Composite Video Input
• Gain Control (-1.0dB ∼ +10.5dB, 0.5dB Step)
• Low Pass Filter
• A Video-Amp for Composite Video Signal(+6dB)
• DC Direct Output or Sag Compensation Output
5. Power Management
6. PLL Mode:
• Frequencies:
12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)
1fs (FCK pin)
16fs, 32fs or 64fs (BICK pin)
7. EXT Mode:
• Frequencies: 256fs, 512fs or 1024fs (MCKI pin)
8. Sampling Rate:
• PLL Slave Mode (FCK pin): 7.35kHz ~ 48kHz
• PLL Slave Mode (BICK pin): 7.35kHz ~ 48kHz
• PLL Slave Mode (MCKI pin):
Rev. 0.6
2007/10
-1-