[AK4682]
AK4682
Multi-channel CODEC with 2Vrms Stereo Selector
GENERAL DESCRIPTION
The AK4682 is a single chip CODEC that includes two channels of ADC and four channels of DAC. The ADC
outputs 24bit data and the DAC accepts up to 24bit input data. The ADC has the Enhanced Dual Bit
architecture with wide dynamic range. The DAC introduces the new developed Advanced Multi-Bit
architecture, and achieves wider dynamic range and lower outband noise. The AK4682 integrates stereo
selector supporting 2Vrms I/O. The AK4682 has a dynamic range of 96dB for ADC, 102dB for DAC and is well
suited for digital TV and home theater system.
FEATURES
ADC/DAC part
Asynchronous ADC/DAC Operation
8:1 Stereo Selector for ADC Input
8:3 Stereo Selector with 2Vrms Output Buffer
2-channel 24bit ADC
- 64x Oversampling
- Sampling Rate up to 48kHz
- Linear Phase Digital Anti-Alias Filter
- Single-Ended Input
- S/(N+D): 88dB
- Dynamic Range, S/N: 96dB
- Digital HPF for Offset Cancellation
- Channel Independent Digital Volume (+24/-103dB, 0.5dB/step)
- Soft Mute
4-channel 24bit DAC
- 128x Oversampling
- Sampling Rate up to 192kHz
- 24bit 8 times Digital Filter
- S/(N+D): 86dB
- Dynamic Range, S/N: 102dB
- Channel Independent Digital Volume (+12/-115dB, 0.5dB/step)
- Soft Mute
- De-emphasis Filter
- Output Mode: Stereo, Mono, Reverse, Mute
High Jitter Tolerance
TTL Level Digital I/F
External Master Clock Input:
256fs, 384fs, 512fs 768fs (fs=32kHz
∼
48kHz)
128fs, 192fs, 256fs 384fs (fs=64kHz
∼
96kHz)
128fs, 192fs (fs=120kHz ~ 192kHz)
2 Audio Serial I/F (PORTA, PORTB)
- Master/Slave mode (for PORTB)
- I/F format
2
PORTA: Left(24 bit)/Right(20/24 bit) justified, I S, TDM
PORTB: Left justified, I
2
S
I
2
C Bus
μP
I/F for mode setting
Operating Voltage:
- Digital I/O: 2.7V
∼
5.25V,
- Analog: 4.75V ~ 5.25V and 8.5V ~ 12.6V
Package: 48pin LQFP (0.5mm pitch)
MS0610-E-01
-1-
2007/07
AKM [ ASAHI KASEI MICROSYSTEMS ]
