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PDF AKD4368EG Data sheet ( Hoja de datos )
| Número de pieza | AKD4368EG | |
| Descripción | DAC | |
| Fabricantes | Asahi Kasei Microsystems | |
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ASAHI KASEI
[AK4368EG]
AK4368EG
DAC with built-in PLL & HP-AMP
GENERAL DESCRIPTION
The AK4368 is 24-bit DAC with an integrated PLL and headphone amplifier. The PLL input frequency is
synchronized to typical mobile phone clock frequencies. The AK4368 features an analog mixing circuit
that allows easy interfacing in mobile phone and portable communication designs. The AK4368 includes
a 3-D stereo enhancement circuit that operates with both the headphone amplifier and the stereo lineout.
The integrated headphone amplifier features “pop-free” power-on/off, a mute control, and it delivers
50mW of power into 16Ω. The AK4368 is packaged in a 41-pin BGA package, deal for portable
applications.
FEATURE
Multi-bit ∆Σ DAC
Sampling Rate
- 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz and 48kHz
On chip perfect filtering 8 times FIR interpolator
- Passband: 20kHz
- Passband Ripple: ±0.02dB
- Stopband Attenuation: 54dB
Digital De-emphasis Filter: 32kHz, 44.1kHz and 48kHz
PLL:
- Input Frequency: 27MHz, 26MHz, 19.8MHz, 19.68MHz, 19.2MHz, 15.36MHz,
14.4MHz, 13MHz, 12MHz and 11.2896MHz
- Input Level: AC Couple Input Available
Audio I/F Format: MSB First, 2’s Compliment
- I2S, 24bit MSB justified, 24bit/20bit/16bit LSB justified
- Master/Slave Mode
Mixing: LR, LL, RR, (L+R)/2
Digital ALC
Digital ATT
Analog Mixing Circuit
3D Stereo Enhancement
Stereo Lineout
µP Interface: 3-wire/I2C
Bass Boost Function
Headphone Amplifier
- Output Power: 50mW x 2ch @16Ω, 3.3V
- S/N: [email protected]
- Pop Noise Free at Power-ON/OFF and Mute
Power Supply: 1.6V ∼ 3.6V
Power Supply Current: 4.0mA @2.4V (HP-AMP no output)
Ta: −30 ∼ 85°C
Small Package: 41pin BGA (4mm x 4mm, 0.5mm pitch)
MS0529-E-00
-1-
2006/07
1 page  
ASAHI KASEI
[AK4368EG]
PIN/FUNCTION
No. Pin Name
B1 MCKO
C2 DVSS
C1 DVDD
D2 I2C
D1 MCKI
E2 LRCK
E1 BICK
F2 SDATA
F1 SDA
CDTI
G2 SCL
CCLK
G3 CAD0
CSN
F4 PDN
G5 3DCAP1
F6 3DCAP2
G6 3DCAP3
F7 LOUT
E6 ROUT
E7 VCOM
D7 AVDD
C6 AVSS
D6 MUTET
C7 HVDD
B6 HVSS
B7 HPR
A6 HPL
A5 MIN
A4 RIN
B3 LIN
A3 VCOC
B2 PVSS
A2 PVDD
I/O Function
O Master Clock Output
- Digital Ground
- Digital Power Supply
I
Control Mode Select
“H”: I2C Bus, “L”: 3-wire Serial
I Master Clock Input
I/O
L/R Clock
This clock determines which audio channel is currently being input on SDATA pin.
I/O
Serial Bit Clock
This clock is used to latch audio data.
I Audio Serial Data Input
I/O Control Data Input/Output (I2C pin = “H”)
I Control Data Input (I2C pin = “L”)
I Control Data Clock (I2C pin = “H”)
I Control Data Clock (I2C pin = “L”)
I Chip Address 0 Select (I2C pin = “H”)
I Control Data Chip Select (I2C pin = “L”)
Power-down & Reset
I When “L”, the AK4368 is in power-down mode and is held in reset.
The AK4368 should always be reset upon power-up.
O
Capacitor Connect Pin 1 for 3D Stereo Enhancement
Connected to 3DCAP2 pin with 4.7nF capacitor in series.
Capacitor Connect Pin 2 for 3D Stereo Enhancement
O Connected to 3DCAP1 pin with 4.7nF capacitor in series and connected to 3DCAP3 pin
with 470nF capacitor in series.
O
Capacitor Connect Pin 1 for 3D Stereo Enhancement
Connected to 3DCAP2 pin with 470nF capacitor in series.
O Lch Analog Output
O Rch Analog Output
O
Common Voltage Output
Normally connected to AVSS pin with a 2.2µF electrolytic capacitor.
- Analog Power Supply
- Analog Ground
O
Mute Time Constant Control
Connected to AVSS pin with a capacitor for mute time constant.
- Power Supply Pin for Headphone Amp
- Ground for Headphone Amp
O Rch Headphone Amp Output
O Lch Headphone Amp Output
I Mono Analog Input
I Rch Analog Input
I Lch Analog Input
O
Output for Loop Filter of PLL Circuit
This pin should be connected to AVSS with one resistor and one capacitor in series.
- Ground for PLL. Connected to AVSS.
- Power Supply for PLL. Normally connected to AVDD.
MS0529-E-00
-5-
2006/07
5 Page 
ASAHI KASEI
[AK4368EG]
DC CHARACTERISTICS
(Ta=25°C; AVDD, DVDD, PVDD, HVDD=1.6 ∼ 3.6V)
Parameter
Symbol
Min
typ
max Units
High-Level Input Voltage 2.2V≤DVDD≤3.6V VIH 70%DVDD
-
-V
1.6V≤DVDD<2.2V VIH 80%DVDD
-
-V
Low-Level Input Voltage 2.2V≤DVDD≤3.6V VIL
-
- 30%DVDD V
1.6V≤DVDD<2.2V VIL
-
- 20%DVDD V
Input Voltage at AC Coupling (Note 18)
VAC
0.4
-
- Vpp
High-Level Output Voltage
(Iout=−200µA) VOH DVDD−0.2
-
-V
Low-Level Output Voltage
(Except SDA pin: Iout=200µA) VOL
-
- 0.2 V
(SDA pin: Iout=3mA) VOL
-
- 0.4 V
Input Leakage Current
Iin -
- ±10 µA
Note 18. Only MCKI pin. (Figure 48)
MS0529-E-00
- 11 -
2006/07
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AKD4368EG.PDF ] | |
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