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AK4561 Fiches technique(PDF) 1 Page - Asahi Kasei Microsystems |
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AK4561 Fiches technique(HTML) 1 Page - Asahi Kasei Microsystems |
1 / 48 page ASAHI KASEI AKM CONFIDENTIAL [AK4561] Rev. 0.9 2000/09 - 1 - GENERAL DESCRIPTION AK4561 is a 16bit stereo CODEC with a built-in Microphone-Amp, Headphone-Amp. Input circuits include Microphone/LINE inputs selector, power supply for microphone, Pre-Amp, HPF-Amp, EQ-Amp and ALC (Automatic Level Control) circuit, and output circuits include LINEOUT buffer, Analog Volume and Headphone-Amp. As Multi-Power-Supply-System can be set a suitable power supply voltage in each block, the AK4561 is compatible with high performance and low power dissipation. The package is a 64pin TQFP, therefore, a new system can be a smaller board area than a current system is composed of 2 or 3 chips. FEATURE 1. Resolution: 16bits 2. Recording Function • 3-Input Selector (Internal MIC, External MIC and LINE) • MIC-Amp - Pre-Amp, EQ-Amp, HPF-Amp for wind-noise • Digital ALC (Automatic Level Control) circuit • FADEIN/FADEOUT • Digital Delay circuit • Digital HPF for offset cancellation (fc=3.7Hz@fs=48kHz) 3. Playback Function • Digital De-emphasis Filter (tc=50/15µs, fs = 32kHz, 44.1kHz and 48kHz) • LINEOUT Buffer: +2dBV • Analog Volume - 0dB ∼ -50dB, Mute • Headphone-Amp - Output Level: -5.5dBV@VA=2.8V, RL=55 Ω • Monaural Output Buffer • BEEP Signal Input 4. Analog Through Mode 5. Power Management 6. ADC Characteristics (LINEIN → ALC → ADC) • S/(N+D): 78dB, DR=S/N: 86dB 7. DAC Characteristics (DAC → LINEOUT) • S/(N+D): 76dB, DR=S/N: 88dB 8. Master Clock: 256fs/384fs 9. Sampling Rate: 8kHz ∼50kHz 10. Audio Data Interface Format: MSB-First, 2’s compliment (AK4550 Compatible) • ADC: 16bit MSB justified, DAC: 16bit LSB justified 11. Ta = -20 ∼ 85°C 12. Power Supply • CODEC, Analog Volume, Headphone-Amp: 2.6 ∼ 3.3V (typ. 2.8V) • LINEOUT: 3.8 ∼ 5.5V (typ. 4.5V) • MIC-Amp: 2.6 ∼ 5.0V (typ. 2.8V) • Digital I/F: 1.8 ∼ 3.3V (typ. 2.8V) 13. Power Supply Current • All Circuit Power On: 37mA 14. Package: 64pin TQFP, 0.4mm Pitch 16bit CODEC with built-in ALC and MIC/HP-Amp AK4561 - Preliminary - |
Numéro de pièce similaire - AK4561 |
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Description similaire - AK4561 |
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