AK4352 Datasheet, PDF (1/13 Pages) Asahi Kasei Microsystems – 2V & LOW POWER MULTI-BIT DAC

ASAHI KASEI
[AK4352]
AK4352
2V & Low Power Multi-Bit ∆Σ DAC
GENERAL DESCRIPTION
The AK4352 is an 18bit low voltage & power stereo DAC for digital audio system. The AK4352 uses the
new developed Multi-Bit _∆Σ architecture, this new architecture achieves DR=94dB at low voltage
operation. The AK4352 includes post filter with single-ended output and does not need any external parts.
The AK4352 is suitable for the portable audio system like MD, etc as low power and small package.
FEATURES
• ^Multi-Bit ∆Σ ^DAC
• ^{Sampling Rate Ranging: 8kHz} ∼ ^50kHz
• ^{On chip post filter}
• ^{On chip Buffer with Single-ended Output}
• ^{On chip Perfect filtering 8 times FIR interpolator}
Passband: 20kHz
Passband Ripple: _± 0.06dB
Stopband Attenuation: 43dB
• ^{Digital Audio I/F format: 2’s compliment, MSB first}
18bit MSB justified, 16/18bit LSB justified, I²S
• ^{Digital de-emphasis for 44.1kHz sampling}
• ^{Master clock: 256fs or 384fs}
• ^{THD+N: -83dB@2V, -89dB@3V}
• ^{D-Range: 94dB@2V, 96dB@3V}
• ^{Output Voltage: 1.10Vpp@2V}
• ^{Low Voltage Operation: 2V (1.8} ∼ ^3.6V)
• ^{Low power Dissipation: 6mW@2V}
• ^{Very Small Package: 16pin TSSOP}
DIF0 DIF1
LRCK
BICK
SDATA
VDD
VSS
PD
Serial Input
Interface
8X
Interpolator
∆Σ
Modulator
LPF
8X
∆Σ
LPF
Interpolator
Modulator
De-emphasis
Control
Clock Divider
VCML
AOUTL
AOUTR
VCMR
DEM
MCLK CKS
VREF
M0040-E-02
-1-
2000/11