ASAHI KASEI
[AK4348]
AK4348
3.3V 192kHz 24-Bit 8-Channel DAC
GENERAL DESCRIPTION
The AK4348 is an 8-channel 24bit DAC operating off of a single +3.3V power supply. The outputs are
single-ended, and it samples at rates from 8kHz to 192kHz. It uses AKM’s advanced multi-bit architecture
for the modulator to achieve a wide dynamic range while preserving linearity for improved THD+N
performance. The output circuit includes a switched-cap filter and a second-order analog low pass filter,
minimizing the need for external filtering.
FEATURES
Sampling Rate: 8kHz to 192kHz
24-Bit 8 times Digital Filter with Slow Roll-Off Option
DR, S/N: 104dB
THD+N: -90dB
High Tolerance to Clock Jitter
Single Ended Output Buffer with Second Order Analog LPF
Digital De-emphasis for 32, 44.1 & 48kHz sampling
Zero Detect Function
Channel Independent Digital Attenuator (Linear 256 steps)
3-wire Serial or I
2
C Control
I/F format: MSB justified, LSB justified (16-, 20-, 24-bit), I
2
S, TDM
Master clock: 256fs, 384fs, 512fs or 768fs or 1152fs (Normal Speed Mode)
128fs, 192fs, 256fs or 384fs (Double Speed Mode)
128fs or 192fs (Quad Speed Mode)
Power Supply: 2.7V to 3.6V
Ta =
−20
∼
85°C (EF),
−40
∼
85°C (VF)
Package: 30-pin VSOP
AK4359 Pin Compatible
DZF
LOUT1
Audio
I/F
LPF
SCF
DAC
DATT
ROUT1
LPF
SCF
DAC
DATT
PCM
LOUT2
LPF
SCF
DAC
DATT
Control
Register
MCLK
LRCK
BICK
SDTI1
SDTI2
SDTI3
SDTI4
3-wire
or I2C
ROUT2
LPF
SCF
DAC
DATT
LOUT3
LPF
SCF
DAC
DATT
ROUT3
LPF
LPF
SCF
SCF
DAC
DAC
DATT
DATT
LOUT4
ROUT4
LPF
SCF
DAC
DATT
AK4348
MS0532-E-00
-1-
2006/07
AKM [ ASAHI KASEI MICROSYSTEMS ]
