AK4384

AK4384 should always be reset upon power-up.
6 SMUTE
I Soft Mute Pin in parallel mode
“H”: Enable, “L”: Disable
CSN
I Chip Select Pin in serial mode
7 ACKS
I Auto Setting Mode Pin in parallel mode
128fs, 192fs, 256fs or 384fs (Double Speed Mode)
128fs, 192fs (Quad Speed Mode) o THD+N: -94dB o Dynamic Range: 106dB o Power supply: 4.5 to 5.5V o Very Small Package: 16pin TSSOP (6.4mm x 5.0mm)
MS0176-E-00 -2-
2002/09
ASAHI KASEI
[AK4384]
ABSOLUTE MAXIMUM RATINGS
(VSS=0V; Note 1)
Parameter
Symbol
min
Power Supply
VDD
-0.3
Input Current (any pins except for supplies)
“L”: Manual Setting Mode, “H”: Auto Setting Mode
CCLK
I Control Data Clock Pin in serial mode
8 DIF0
I Audio Data Interface Format Pin in parallel mode
CDTI
13 VSS
- Ground Pin
14 VDD
- Power Supply Pin
15 DZFR
O Rch Data Zero Input Detect Pin
16 DZFL
O Lch Data Zero Input Detect Pin
Note: All input pins except pull-up pin should not be left floating.
Units Bits
dB dB dB dB dB dB dB dB dB dB
ppm/°C Vpp kΩ
mA mA µA
MS0176-E-00 -4-
2002/09
ASAHI KASEI
[AK4384]
SHARP ROLL-OFF FILTER CHARACTERISTICS
10
AOUTR
9
P/S
[AK4384]
PIN/FUNCTION
No. Pin Name
I/O Function
1 MCLK
I Master Clock Input Pin
An external TTL clock should be input on this pin.
2 BICK
I Audio Serial Data Clock Pin
O Rch Analog Output Pin
11 AOUTL
O Lch Analog Output Pin
12 VCOM
O Common Voltage Pin, VDD/2 Normally connected to VSS with a 0.1µF ceramic capacitor in parallel with a 10µF electrolytic cap.
8X Interpolator
∆Σ Modulator
SCF LPF
VDD VSS VCOM DZFL DZFR AOUTL
AOUTR
PDN
MS0176-E-00 -1-
2002/09
ASAHI KASEI
n Ordering Guide
AK4384VT AKD4384
n Pin Layout
-40 ∼ +85°C
ASAHI KASEI
[AK4384]
AK4384
106dB 192kHz 24-Bit 2ch ∆Σ DAC
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.
MS0176-E-00 -3-
2002/09
ASAHI KASEI
[AK4384]
ANALOG CHARACTERISTICS
(Ta=25°C; VDD=5.0V; fs=44.1kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Input Data;
Measurement frequency=20Hz ∼ 20kHz; RL ≥5kΩ; unless otherwise specified)
FEATURES o Sampling Rate Ranging from 8kHz to 192kHz o 128 times Oversampling (Normal Speed Mode) o 64 times Oversampling (Double Speed Mode) o 32 times Oversampling (Quad Speed Mode) o 24-Bit 8 times FIR Digital Filter o SCF with High Tolerance to Clock Jitter o 2nd order Analog LPF o Single Ended Output Buffer o Digital de-emphasis for 32k, 44.1k and 48kHz sampling o Soft mute o Digital Attenuator (Linear 256 steps) o I/F format: 24-Bit MSB justified, 24/20/16-Bit LSB justified or I2S o Master clock: 256fs, 384fs, 512fs, 768fs or 1152fs (Normal Speed Mode)
16pin TSSOP (0.65mm pitch)
Evaluation Board for AK4384
MCLK
1
BICK
2
SDTI
3
LRCK
4
PDN
5
SMUTE/CSN
6
ACKS/CCLK
7
DIF0/CDTI
8
Top View
16
DZFL
15
DZFR
14
VDD
13
VSS
12
VCOM
11
AOUTL
(Note 8)
17
27
20
32
10
100
Notes: 3. Measured by Audio Precision (System Two). Refer to the evaluation board manual. 4. 100dB at 16bit data. 5. S/N does not depend on input bit length. 6. Full-scale voltage (0dB). Output voltage scales with the voltage of VREF, AOUT (typ.@0dB) = 3.4Vpp × VDD/5. 7. For AC-load. 8. All digital inputs including clock pins (MCLK, BICK and LRCK) are held VDD or VSS.
I Control Data Input Pin in serial mode
9 P/S
I
Parallel/Serial Select Pin
(Internal pull-up pin)
“L”: Serial control mode, “H”: Parallel control mode
10 AOUTR
Parameter
min
typ
max
Resolution
24
Dynamic Characteristics
(Note 3)
THD+N
fs=44.1kHz BW=20kHz
0dBFS -60dBFS
-94
-84
-42
-
fs=96kHz BW=40kHz
0dBFS -60dBFS
-92
-
-39
-
fs=192kHz BW=40kHz
3 SDTI
I Audio Serial Data Input Pin
4 LRCK
I L/R Clock Pin
5 PDN
I Power-Down Mode Pin
When at “L”, the AK4384 is in the power-down mode and is held in reset. The
P/S
MCLK
SMUTE/CSN ACKS/CCLK
DIF0/CDTI
LRCK BICK SDTI
µP Interface
De-emphasis Control
Clock Divider
Audio
ATT
8X Interpolator
∆Σ Modulator
SCF LPF
Data
Interface
ATT
(VSS=0V; Note 1) Parameter Power Supply
RECOMMENDED OPERATING CONDITIONS
Symbol VDD
min
typ
4.5
5.0
max
Units
5.5
V
*AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
0.2
பைடு நூலகம்
0.5
DC Accuracy
Gain Drift
100
-
Output Voltage Load Resistance
(Note 6)
3.15
3.40
3.65
(Note 7)
5
Power Supplies
Power Supply Current (VDD) Normal Operation (PDN = “H”, fs≤96kHz) Normal Operation (PDN = “H”, fs=192kHz) Power-Down Mode (PDN = “L”)
IIN
-
Input Voltage
VIND
-0.3
Ambient Operating Temperature
Ta
-40
Storage Temperature
Tstg
-65
Note: 1. All voltages with respect to ground.
max 6.0 ±10 VDD+0.3 85 150
WARNING: Operation at or beyond these limits may results in permanent damage to the device. Normal operation is not guaranteed at these extremes.
Units V mA V °C °C
0dBFS -60dBFS
-92
-
-39
-
Dynamic Range (-60dBFS with A-weighted) (Note 4)
100
106
S/N
(A-weighted)
(Note 5)
100
106
Interchannel Isolation (1kHz)
90
100
Interchannel Gain Mismatch