
[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)
Passband: 0~21.648kHz (@fs=48kHz)
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
AVDD2
AVDD1
DVDD1
AVSS2
AVSS1
ΔΣ
Modulator
LIN1-
LRCK
BICK
SDTO1
VCOM1
VCOM2
Clock Divider
Decimation
Filter
Audio
Interface
Voltage Reference
PDN
LIN1+
ΔΣ
Modulator
RIN1-
Decimation
Filter
RIN1+
ΔΣ
Modulator
LIN2-
Decimation
Filter
LIN2+
ΔΣ
Modulator
RIN2-
Decimation
Filter
RIN2+
SDTO2
DIF
TDM0
TDM1
HPF
MONO
M/S
MCLK
TDMIN
DVDD2
OVF
DVSS1
DVSS2 BVSS
CKS0 CKS2
VRL1 VRP2 VRL2
VRP1
CKS2
Rev. 0.3
2007/10
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