[AK5388]
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Preliminary
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AK5388
120dB 24-bit 192kHz 4-Channel ADC
GENERAL DESCRIPTION
The AK5388 is a 24bit, 216kHz sampling 4-channel A/D converter for high-end audio systems. The
modulator in the AK5388 uses AKM’s Enhanced Dual Bit architecture, enabling the AK5388 realizes to
realize high accuracy and low cost. The AK5388 achieves 120dB dynamic range and –105dB THD+N,
and an optional mono mode extends dynamic range to 121dB. The AK5388’s digital filter features a
modified FIR architecture that minimizes group delay while maintaining excellent linear phase response.
So the device is suitable for professional audio applications including recording, sound reinforcement,
effects processing, sound cards, and high-end A/V receivers. The AK5388 is available in 44pin LQFP
package.
FEATURES
Sampling Rate: 8kHz ~ 216kHz
Full Differential Inputs
S/(N+D): 105dB
DR, S/N: 120dB(Mono Mode: 123dB)
Short Delay Digital Filter (GD=12.6/fs)
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Passband: 0~21.648kHz (@fs=48kHz)
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Ripple: 0.01dB
•
Stopband: 80dB
Digital HPF
Power Supply: 4.75 ~ 5.25V(Analog), 3.0 ~ 3.6V(Digital)
Output format: 24bit MSB justified, I
2
S or TDM
Cascade TDM I/F: 8ch/48kHz, 4ch/96kHz, 4ch/192kHz
Master & Slave Mode
Overflow Flag
Power Dissipation: TBD mW (@fs=48kHz)
Package: 44pin LQFP
AVDD1 AVSS1 AVDD2 AVSS2 DVDD1 DVSS1
ΔΣ
Modulator
ΔΣ
Modulator
ΔΣ
Modulator
ΔΣ
Modulator
DVDD2 DVSS2 BVSS
LIN1+
LIN1-
RIN1+
RIN1-
LIN2+
LIN2-
RIN2+
RIN2-
VCOM1
VCOM2
Decimation
Filter
Decimation
Filter
Decimation
Filter
Audio
Interface
LRCK
BICK
SDTO1
SDTO2
TDMIN
M/S
DIF
TDM0
TDM1
HPF
MONO
Decimation
Filter
Voltage Reference
Clock Divider
VRP1 VRL1 VRP2 VRL2
MCLK
OVF
PDN
CKS0 CKS2 CKS2
Rev. 0.3
-1-
2007/10
AKM [ ASAHI KASEI MICROSYSTEMS ]
