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PDF AK4648 Data sheet ( Hoja de datos )
| Número de pieza | AK4648 | |
| Descripción | Stereo CODEC | |
| Fabricantes | Asahi Kasei Microsystems | |
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[AK4648]
AK4648
Stereo CODEC with MIC/HP/SPK-AMP
GENERAL DESCRIPTION
The AK4648 is a stereo CODEC with a built-in Microphone-Amplifier, Headphone-Amplifier, and
Speaker-Amplifier. The AK4648 features analog mixing circuits and PLL that allows easy interfacing in
mobile phone and portable A/V player designs. The AK4648 is available in a CSP (3.7mm x 3.8mm),
utilizing less board space than competitive offerings.
FEATURES
1. Recording Function
• 4 Stereo Inputs Selector
• Stereo Mic Input (Full-differential or Single-ended)
• Stereo Line Input
• MIC Amplifier (+32dB/+26dB/+20dB or 0dB)
• Digital ALC (Automatic Level Control)
(+36dB ∼ −54dB, 0.375dB Step, Mute)
• ADC Performance: S/(N+D): 83dB, DR, S/N: 86dB (MIC-Amp=+20dB)
S/(N+D): 88dB, DR, S/N: 95dB (MIC-Amp=0dB)
• Wind-noise Reduction Filter
• Stereo Separation Emphasis
• Programmable EQ
2. Playback Function
• Digital De-emphasis Filter (tc=50/15μs, fs=32kHz, 44.1kHz, 48kHz)
• 5-Band Equalizer
• Soft Mute
• Digital Volume (+12dB ∼ −115.0dB, 0.5dB Step, Mute)
• Digital ALC (Automatic Level Control)
(+36dB ∼ −54dB, 0.375dB Step, Mute)
• Stereo Separation Emphasis
• Programmable EQ
• Stereo Line Output
- Performance: S/(N+D): 88dB, S/N: 92dB
• Stereo Headphone-Amp
- Support Pseudo Cap-less and Single-ended modes
- Analog Volume: + 3dB ~ - 33dB, 3dB Step
- S/(N+D): [email protected], S/N: 90dB
- Output Power: 40mW@16Ω (HVDD=3.6V)
62.5mW@16Ω (HVDD=4.5V)
- Pop Noise Free at Power ON/OFF
• Stereo Speaker-Amp
- S/(N+D): 60dB @ 240mW, S/N: 90dB
- BTL
- Output Power: 820mW @ 8Ω, HVDD=3.6V, High Power Mono SPK Mode
1.6W @ 8Ω, HVDD=5V, High Power Mono SPK Mode
640mW @ 8Ω, HVDD=3.6V, Stereo SPK & Mono SPK Mode
1.0W @ 8Ω, HVDD=4.5V, Stereo SPK Mode
1.3W @ 8Ω, HVDD=5V, Mono SPK Mode
- Pop Noise Free at Power ON/OFF
• Analog Mixing: 4 Stereo Input
3. Power Management
MS0625-E-01
-1-
2007/06
1 page  
www.DataSheet4U.com
[AK4648]
2. Register (difference from the AK4643/5)
Addr Register Name
D7 D6 D5 D4 D3
00H Power Management 1
PMSPR PMVCM PMMIN PMSPL PMLO
01H Power Management 2
HPZ HPMTN PMHPL PMHPR M/S
02H Signal Select 1
SPPSN MINS DACS DACL
0
03H Signal Select 2
LOVL LOPS MGAIN1 SPKG1 SPKG0
04H Mode Control 1
PLL3
PLL2
PLL1
PLL0 BCKO
05H Mode Control 2
PS1 PS0 FS3 MSBS BCKP
06H Timer Select
DVTM WTM2 ZTM1 ZTM0 WTM1
07H ALC Mode Control 1
0 0 ALC ZELMN LMAT1
08H ALC Mode Control 2
REF7 REF6 REF5 REF4 REF3
09H Lch Input Volume Control
IVL7
IVL6
IVL5
IVL4
IVL3
0AH Lch Digital Volume Control DVL7 DVL6 DVL5 DVL4 DVL3
0BH ALC Mode Control 3
RGAIN1 LMTH1
0
0
0
0CH Rch Input Volume Control
IVR7
IVR6
IVR5
IVR4
IVR3
0DH Rch Digital Volume Control DVR7 DVR6 DVR5 DVR4 DVR3
0EH Mode Control 3
0
LOOP SMUTE DVOLC
0
0FH Mode Control 4
HPG3 HPG2 HPG1 HPG0 IVOLC
10H Power Management 3
INR1
INL1
0 MDIF2 MDIF1
11H Digital Filter Select
GN1 GN0
0
FIL1
EQ
12H FIL3 Co-efficient 0
F3A7
F3A6
F3A5
F3A4
F3A3
13H FIL3 Co-efficient 1
F3AS
0 F3A13 F3A12 F3A11
14H FIL3 Co-efficient 2
F3B7
F3B6
F3B5
F3B4
F3B3
15H FIL3 Co-efficient 3
0 0 F3B13 F3B12 F3B11
16H EQ Co-efficient 0
EQA7 EQA6 EQA5 EQA4 EQA3
17H EQ Co-efficient 1
EQA15 EQA14 EQA13 EQA12 EQA11
18H EQ Co-efficient 2
EQB7 EQB6 EQB5 EQB4 EQB3
19H EQ Co-efficient 3
0 0 EQB13 EQB12 EQB11
1AH EQ Co-efficient 4
EQC7 EQC6 EQC5 EQC4 EQC3
1BH EQ Co-efficient 5
EQC15 EQC14 EQC13 EQC12 EQC11
1CH FIL1 Co-efficient 0
F1A7
F1A6
F1A5
F1A4
F1A3
1DH FIL1 Co-efficient 1
F1AS
0 F1A13 F1A12 F1A11
1EH FIL1 Co-efficient 2
F1B7
F1B6
F1B5
F1B4
F1B3
1FH FIL1 Co-efficient 3
0 0 F1B13 F1B12 F1B11
20H Power Management 4
PMAINR4 PMAINL4 PMAINR3 PMAINL3 PMAINR2
21H Mode Control 5
0 SPKMN MICR3 MICL3 L4DIF
22H Lineout Mixing Select
LOM LOM3 RINR4 LINL4 RINR3
23H HP Mixing Select
0 HPM3 RINH4 LINH4 RINH3
24H SPK Mixing Select
0 0 RINS4 LINS4 RINS3
25H EQ Control 250Hz/100Hz FBEQB3 FBEQB2 FBEQB1 FBEQB0 FBEQA3
26H EQ Control 3.5kHz/1kHz FBEQD3 FBEQD2 FBEQD1 FBEQD0 FBEQC3
27H EQ Control 10kHz
0 0 0 0 FBEQE3
XXX These bits are changed from the AK4645.
XXX These bits are changed from the AK4643.
XXX These bits are changed from the AK4643/5.
D2
PMDAC
PMHPC
PMMP
MINL
0
FS2
WTM0
LMAT0
REF2
IVL2
DVL2
0
IVR2
DVR2
FBEQ
HPM
INR0
FIL3
F3A2
F3A10
F3B2
F3B10
EQA2
EQA10
EQB2
EQB10
EQC2
EQC10
F1A2
F1A10
F1B2
F1B10
PMAINL2
MIX
LINL3
LINH3
LINS3
FBEQA2
FBEQC2
FBEQE2
D1
0
MCKO
0
SPKG2
DIF1
FS1
RFST1
RGAIN0
REF1
IVL1
DVL1
VBAT
IVR1
DVR1
DEM1
MINH
INL0
0
F3A1
F3A9
F3B1
F3B9
EQA1
EQA9
EQB1
EQB9
EQC1
EQC9
F1A1
F1A9
F1B1
F1B9
PMMICR
AIN3
RINR2
RINH2
RINS2
FBEQA1
FBEQC1
FBEQE1
D0
PMADL
PMPLL
MGAIN0
0
DIF0
FS0
RFST0
LMTH0
REF0
IVL0
DVL0
0
IVR0
DVR0
DEM0
DACH
PMADR
0
F3A0
F3A8
F3B0
F3B8
EQA0
EQA8
EQB0
EQB8
EQC0
EQC8
F1A0
F1A8
F1B0
F1B8
PMMICL
LODIF
LINL2
LINH2
LINS2
FBEQA0
FBEQC0
FBEQE0
MS0625-E-01
-5-
2007/06
5 Page 
[AK4648]
www.DataSheet4U.com
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD, DVDD, TVDD=3.3V, HVDD=3.6V; VSS1=VSS2=VSS3=0V; fs=44.1kHz, BICK=64fs; Signal
Frequency=1kHz; 16bit Data; Measurement frequency=20Hz ∼ 20kHz; unless otherwise specified)
Parameter
min typ max Units
MIC Amplifier: LIN1/RIN1/LIN2/RIN2/LIN4/RIN4 pins & LIN3/RIN3 pins (AIN3 bit = “1”);
PMAINL2=PMAINR2=PMAINL3=PMAINR3=PMAINL4=PMAINR4 bits = “0”;
MDIF1=MDIF2 bits = “0” (Single-ended inputs)
Input
MGAIN1-0 bits = “00”
40 60 80 kΩ
Resistance MGAIN1-0 bits = “01”, “10”or “11”
20
30
40 kΩ
MGAIN1-0 bits = “00”
- 0 - dB
Gain
MGAIN1-0 bits = “01”
MGAIN1-0 bits = “10”
- +20 - dB
- +26 - dB
MGAIN1-0 bits = “11”
- +32 - dB
MIC Amplifier: IN1+/IN1−/IN2+/IN2− pins; MDIF1 = MDIF2 bits = “1” (Full-differential input)
Input Voltage (Note 12)
MGAIN1-0 bits = “00”
-
-
1.155
Vpp
MGAIN1-0 bits = “01”
-
-
0.228
Vpp
MGAIN1-0 bits = “10”
-
-
0.114
Vpp
MGAIN1-0 bits = “11”
-
-
0.057
Vpp
MIC Power Supply: MPWR pin
Output Voltage (Note 13)
2.22 2.47 2.72 V
Load Resistance
0.5 -
- kΩ
Load Capacitance
- - 30 pF
ADC Analog Input Characteristics: LIN1/RIN1/LIN2/RIN2/LIN4/RIN4 pins & LIN3/RIN3 pins (AIN3 bit = “1”)
→ ADC → IVOL, IVOL=0dB, ALC=OFF
Resolution
- - 16 Bits
Input Voltage (Note 14)
(Note 15)
(Note 16)
0.168
1.68
0.198
1.98
0.228
2.28
Vpp
Vpp
(Note 15, LIN1/RIN1/LIN2/RIN2)
71
83
- dBFS
S/(N+D)
(Note 15, LIN3/RIN3/LIN4/RIN4)
-
83
- dBFS
(−1dBFS)
(Note 16, except for LIN3/RIN3)
-
88
- dBFS
(Note 16, LIN3/RIN3)
- 72 - dBFS
D-Range (−60dBFS, A-weighted)
(Note 15)
(Note 16)
76
-
86
95
- dB
- dB
S/N (A-weighted)
(Note 15)
(Note 16)
76
-
86
95
- dB
- dB
Interchannel Isolation
(Note 15)
(Note 16)
75
-
90
100
- dB
- dB
Interchannel Gain Mismatch
(Note 15)
(Note 16)
-
-
0.1 0.8 dB
0.1 0.8 dB
Note 12. The voltage difference between IN1/2+ and IN1/2− pins. AC coupling capacitor should be inserted in series at
each input pin. Maximum input voltage of IN1+, IN1−, IN2+ and IN2− pins is proportional to AVDD voltage,
respectively.
Vin = = |(IN+) − (IN−)| = 0.35 x AVDD (max) @ MGAIN1-0 bits = “00”, 0.069 x AVDD (max.)@MGAIN1-0
bits = “01”, 0.035 x AVDD (max.)@MGAIN1-0 bits = “10”, 0.017 x AVDD (max.)@MGAIN1-0 bits = “11”.
When MGAIN1-0 bits = “00”, the full scale level can not be input to ADC. The input level is -6dBFS @ IVL/R =
0dB”. When the signal larger than above value is input to IN1+, IN1−, IN2+ or IN2− pin, ADC does not operate
normally.
Note 13. Output voltage is proportional to AVDD voltage. Vout = 0.75 x AVDD (typ.)
Note 14. Input voltage is proportional to AVDD voltage. Vin = 0.06 x AVDD (typ.)@MGAIN1-0 bits = “01” (+20dB),
Vin = 0.6 x AVDD(typ.)@MGAIN1-0 bits = “00” (0dB)
Note 15. MGAIN1-0 bits = “01” (+20dB)
Note 16. MGAIN1-0 bits = “00” (0dB)
MS0625-E-01
- 11 -
2007/06
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK4648.PDF ] | |
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