Inter-m GEQ-1231D, Service Manual

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BLOCK DIAGRAM AK4524 24 bit 96kHz AUDIO CODEC
GENERAL DESCRIPTION
The AK4524 is a high performance 24bit CODEC for the 96kHz recording system. The ADC has an
Enhanced Dual Bit architecture with wide dynamic range. The DAC uses the new developed Advanced
Multi Bit architecture and achieves low outband noise and high jitter tolerance by use of SCF(switched
capacitor filter) techniques.The AK4524 has an input PGA and is well suited MD, DVTR system and
musical instruments.
FEATURES
• 24bit 2ch ADC
– 64x Oversampling
– Single-End inputs
– S/(N+D):90dB
– Dynamic Range, S/N:100dB
– Digital HPF for offset cancellation
– Input PGA with +8dB gain & 0.5dB step
– Input DATT with -72dB att
– I/F format:MSB justified or I
2 S
• 24bit 2ch DAC
– 128 x Oversampling
– 24bit 8 times Digital Filter
Ripple:±0.005dB, Attenuation:75dB
– SCF
– Differential Outputs
– S/(N+D):94dB
– Dynamic Range, S/N:110dB
– De-emphasis for 32kHz, 44.1kHz, 48kHz sampling
– Output DATT with -72dB att
– Soft Mute
– I/F format:MSB justified, LSB justified or l
2
S
• High Jitter Tolerance
• 3-wire Serial Interface for Volume Control
• Master Clock
– X’tal Oscillating Circuit
– 256fs/384fs/768fs/1024fs
• Master Mode/Slave Mode
• 5V operation
• 3V Power Supply Pin for 3V I/F
• Small 28pin VSOP package
PIN LAYOUT
ORDERING GUIDE
AK4524VF -10~+70°C 28pin VSOP (0.65mm pitch)
AKD4524 Evaluation Board