[AK4340]
AK4340
192kHz 24-Bit Stereo
ΔΣ
DAC with 2Vrms Output
GENERAL DESCRIPTION
The AK4340 offers the ideal features for consumer systems that require a 2Vrms audio output. Using
AKM's multi bit architecture for its modulator the AK4340 delivers a wide dynamic range while preserving
linearity for improved THD+N performance. The AK4340 integrates the Switched Capacitor Filter (SCF)
increasing performance for systems with excessive clock jitter. The 24 Bit word length and 192kHz
sampling rate make this part ideal for a wide range of applications including Set-top-box, DVD-Audio. The
AK4340 is offered in a space saving 16pin TSSOP package.
FEATURES
Sampling Rate Ranging from 8kHz to 192kHz
128 times Oversampling (Normal Speed Mode)
64 times Oversampling (Double Speed Mode)
32 times Oversampling (Quad Speed Mode)
24-Bit 8 times FIR Digital Filter
Switched Capacitor Filter with High Tolerance to Clock Jitter
On chip Buffer with 2Vrms Single-ended output
Digital De-emphasis Filter: 32kHz, 44.1kHz or 48kHz
Soft Mute Function
Digital Attenuator (Linear 256 Step)
Audio interface format: 24Bit MSB justified, 24/20/16 LSB justified or
I
2
S compatible
Master clock: 256fs, 384fs, 512fs, 768fs or 1152fs (Normal Speed Mode)
128fs, 192fs, 256fs or 512fs (Double Speed Mode)
128fs or 192fs (Quad Speed Mode)
THD+N: -90dB
Dynamic Range: 106dB
Power supply: +4.5V to +5.5V (DAC), - 4.5V to - 13.2V (Output Buffer)
Ta = - 20 to 85
°C
Package: 16pin TSSOP (6.4mm x 5.0mm)
P/S
MCLK
GAIN
VDD
SMUTE/CSN
ACKS/CCLK
DIF0/CDTI
µP
Interface
De-emphasis
Control
Clock
Divider
VSS
HVEE
LRCK
BICK
SDTI
Audio
Data
Interface
ATT
8X
Interpolator
8X
Interpolator
ΔΣ
Modulator
ΔΣ
Modulator
SCF
LPF
SCF
LPF
AOUTL
ATT
AOUTR
PDN
MS0501-E-01
-1-
2010/09
AKM [ ASAHI KASEI MICROSYSTEMS ]
