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PDF AK4640 Data sheet ( Hoja de datos )
| Número de pieza | AK4640 | |
| Descripción | 16-BIT CODEC | |
| Fabricantes | Asahi Kasei Microsystems | |
| Logotipo |  |
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ASAHI KASEI
[AK4640]
AK4640
16-Bit ∆Σ CODEC with MIC/HP/SPK-AMP
GENERAL DESCRIPTION
The AK4640 targeted at PDA and other low-power, small size applications. It features a 16bit stereo
CODEC with a built-in Microphone-Amplifier, Headphone-Amplifier and Speaker-Amplifier. Input circuits
include a Microphone-Amplifier and an ALC (Auto Level Control) circuit. The AK4640 is available in a
smaller 57pin BGA in addition to a 52pin QFN that has compatibility with the AK4534/8, utilizing less
board space than competitive offerings.
FEATURES
1. Resolution : 16bits
2. Recording Function
• Mono Input
• 2 to 1 Selector (Internal and External MIC)
• 1st MIC Amplifier : +20dB or 0dB
• 2nd Amplifier with ALC : +27.5dB ∼ −8dB, 0.5dB Step
• ADC Performance : S/(N+D) : 79dB, DR, S/N : 83dB
3. Playback Function
• Digital De-emphasis Filter (tc=50/15µs, fs=32kHz, 44.1kHz, 48kHz)
• Digital Volume (0dB ∼ −127dB, 0.5dB Step, Mute)
• Headphone-Amp
- S/(N+D) : 70dB, S/N : 90dB
- Output Power : 15mW@16Ω (HVDD=3.3V)
- Click Noise Free at Power ON/OFF
• Mono Speaker-Amp with ALC
- S/(N+D) : 64dB@150mW, S/N : 90dB
- BTL Output
- ALC circuit
- Output Power : 300mW@8Ω, THD+N=10% (HVDD=3.3V)
• Mono and Stereo Beep Inputs
4. Phone I/F
• Full-differential AUX Input
• Full-differential Mono Output
5. Power Management
6. Master Clock
(1) PLL Mode
• Frequencies : 11.2896MHz, 12MHz and 12.288MHz
• Input Level : CMOS
(2) External Clock Mode
• Frequencies : 1.792MHz ∼ 12.288MHz
7. Output Master Clock Frequencies : 32fs/64fs/128fs/256fs
8. Sampling Rate
(1) PLL Mode
• 8kHz, 11.025kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz
(2) External Clock Mode
• 8kHz ∼ 48kHz
9. Control mode: 4-wire Serial / I2C Bus
10. Master/Slave mode
MS0273-E-00
-1-
2004/03
1 page  
ASAHI KASEI
Comparison with AK4534, AK4538
1. Function
Function
SPK-Amp Output Power at DAC
path
DAC Digital Filter
Stopband Attenuation
AUX Input
MOUT Gain Select
Path from IPGA to Analog Output
HP-Amp Mono mode
Stereo Line Out
MIC Detect
HP-Amp Power Supply Current
(typ)
SPK-Amp Power Supply Current
(typ)
Package
AK4534
150mW
43dB
Not Available
Not Available
Not Available
Not Available
Not Available
Not Available
6.5mA
9mA
52pin QFN
(7.2mm x 7.2mm)
2. Pin
Pin#
2
42
43
46
47
3. Register
Addr
00H
02H
03H
05H
07H
0EH
0FH
Data
D2
D4
D4
D7
D4
D5
D6
D2
D3
D4
D7
D3-0
D6-4
D7
D0
AK4534
TST1
TST2
TST3
TST4
TST5
AK4534
0
0
0
0
0
0
0
0
HPLM
HPRM
0
0
0
0
-
AK4538
150mW
43dB
Available
Available
Available
Available
Available
Available
6.5mA
9mA
52pin QFN
(7.2mm x 7.2mm)
AK4538
MDT
ROUT
LOUT
AUXIN−
AUXIN+
AK4538
PMAUX
PMLO
MICM
MOGN
MICL
AUXL
PSLO
HPM
HPLM
HPRM
AUXAD
GN3-0
ATTS2-0
ATTM
DTMIC
[AK4640]
AK4640
300mW
59dB
Available
Available
Available
Available
Not Available
Not Available
4mA
7mA
52pin QFN
(7.2mm x 7.2mm),
57pin BGA
(5mm x 5mm)
AK4640VN
NC
NC
NC
AUXIN−
AUXIN+
AK4640
PMAUX
0
MICM
MOGN
MICL
AUXL
0
HPM
0
0
AUXAD
GN3-0
ATTS2-0
ATTM
-
MS0273-E-00
-5-
2004/03
5 Page 
ASAHI KASEI
[AK4640]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD, DVDD, PVDD, HVDD=3.3V; AVSS=DVSS=PVSS=HVSS=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:
Input Resistance
20 30 40 kΩ
Gain
(MGAIN bit = “0”)
(MGAIN bit = “1”)
- 0 - dB
- 20 - dB
MIC Power Supply:
Output Voltage (Note 4)
2.22 2.47 2.72 V
Load Resistance
2 - - kΩ
Load Capacitance
- - 30 pF
Input PGA Characteristics:
Input Resistance (Note 5)
5 10 15 kΩ
Step Size
0.1 0.5 0.9 dB
Gain Control Range
−8
-
+27.5
dB
ADC Analog Input Characteristics: MIC Gain=20dB, IPGA=0dB, ALC1=OFF, MIC → IPGA → ADC
Resolution
- - 16 Bits
Input Voltage (Note 6)
0.168
0.198
0.228
Vpp
S/(N+D)
(−1dBFS)
71 79
- dBFS
D-Range
(−60dBFS, A-weighted)
75 83
- dB
S/N (A-weighted)
75 83
- dB
DAC Characteristics:
Resolution
- - 16 Bits
Mono Line Output Characteristics: RL=20kΩ, DAC → MOUT+/MOUT− pins
Output Voltage
MOGN bit = “1”, −17dB
-
0.31
- Vpp
(Note 7)
MOGN bit = “0”, +6dB
3.56
3.96
4.36 Vpp
S/(N+D) (-3dBFS) MOGN bit = “1”, −17dB
-
76
dBFS
MOGN bit = “0”, +6dB
79
89
dBFS
S/N (A-weighted) MOGN bit = “1”, −17dB
-
79
dB
MOGN bit = “0”, +6dB
85
95
dB
Load Resistance
MOGN bit = “1”, −17dB
2
kΩ
MOGN bit = “0”, +6dB
20
kΩ
Load Capacitance
30 pF
Note 4. Output voltage is proportional to AVDD voltage. Vout = 0.75 x AVDD(typ).
Note 5. When IPGA Gain is changed, this typical value changes between 8kΩ and 11kΩ.
Note 6. Input voltage is proportional to AVDD voltage. Vin = 0.06 x AVDD(typ).
Note 7. Output voltage is proportional to AVDD voltage. Vout = 1.2 x AVDD(typ)@MOGN bit = “0” at Full-differential
output. Vout = 0.6 x AVDD(typ)@MOGN bit = “0” at Single-end Output.
MS0273-E-00
- 11 -
2004/03
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK4640.PDF ] | |
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