Harman Kardon Harman/kardon HK3490, Service Manual

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GENERAL DESCRIPTION
The AK4384 offers the perfect mix for cost and performance based audio systems. Using AKM's multi bit
architecture for its modulator the AK4384 delivers a wide dynamic range while preserving linearity for
improved THD+N performance. The AK4384 integrates a combination of SCF and CTF filters 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 DVD-Audio. The AK4384 is offered in a
space saving 16pin TSSOP package.
FEATURES
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Sampling Rate Ranging from 8kHz to 192kHz
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128 times Oversampling (Normal Speed Mode)
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64 times Oversampling (Double Speed Mode)
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32 times Oversampling (Quad Speed Mode)
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24-Bit 8 times FIR Digital Filter
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SCF with High Tolerance to Clock Jitter
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2nd order Analog LPF
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Single Ended Output Buffer
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Digital de-emphasis for 32k, 44.1k and 48kHz sampling
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Soft mute
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Digital Attenuator (Linear 256 steps)
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I/F format: 24-Bit MSB justified, 24/20/16-Bit LSB justified or I
2
S
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Master clock: 256fs, 384fs, 512fs, 768fs or 1152fs (Normal Speed Mode)
128fs, 192fs, 256fs or 384fs (Double Speed Mode)
128fs, 192fs (Quad Speed Mode)
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THD+N: -94dB
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Dynamic Range: 106dB
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Power supply: 4.5 to 5.5V
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Very Small Package: 16pin TSSOP (6.4mm x 5.0mm)
LRCK
BICK
SDTI
Audio
Data
Interface
MCLK
PDN
∆Σ
Modulator
AOUTL
8X
Interpolator
SCF
LPF
AOUTR
VDD
VSS
VCOM
De-emphasis
Control
P/S
µP
Interface
Clock
Divider
SMUTE/CSN
ACKS/CCLK
DIF0/CDTI
∆Σ
Modulator
8X
Interpolator
DZFR
DZFL
SCF
LPF
ATT
ATT
106dB 192kHz 24-Bit 2ch
∆Σ
DAC
AK4384
89
HK3490
harman/kardon