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低能耗1声道ADC和1声道DAC配有麦克风/D类扬声器放大器
Low Power 1ch ADC & 1ch DAC with MIC/Class-D SPK Amp
| 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 suits moving picture recording of Digital Still Camera. This speaker-Amplifier supports a Piezo Speaker. The AK4634 is housed in a space-saving 29-pin Wafer Level CSP 2.5mm x 3.0mm package. |
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- Application s : DSC, Security Camera, Electrical Dictionary
- 16-Bit Delta-Sigma Mono CODEC
- 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
- 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
- Beep Generator
- Power Management
- PLL Mode:
- Frequencies :
12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)
1fs (FCK pin)
16fs, 32fs or 64fs (BICK pin)
- EXT Mode:
- Frequencies : 256fs, 512fs or 1024fs (MCKI pin)
- Sampling Rate:
- PLL Slave Mode (FCK pin) : 7.35 kHz ~ 48k Hz
- PLL Slave Mode (BICK pin) : 7.35 kHz ~ 48k Hz
- 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:
7.35 kHz ~ 48kHz (256fs), 7.35 kHz ~ 26kHz (512fs), 7.35kHz ~ 13kHz (1024fs)
- Output Master Clock Frequency: 256fs
- Serial m P Interface: 3-wire, I2C Bus (Ver 1.0, 400kHz High Speed Mode)
- Master / Slave Mode
- Audio Interface Format: MSB First, 2's compliment
- ADC: DSP Mode, 16bit MSB justified, I2S
- DAC : DSP Mode, 16bit MSB justified, 16bit LSB justified, I2S
- Ta = - 30 ~ 85 ° C
- Power Supply
- Analog Supply (AVDD): 2.8 ~ 3.6V
- Digital Supply (DVDD): 1.6 ~ 3.6V
- Speaker Supply ( SVDD) : 2.2 ~ 4.0V
- Package: 29pin CSP, 2.5mm x 3.0mm
- Evaluation Board: AKD4634
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AK4634 BLOCK DIAGRAM
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