AK4120 Datasheet PDF - Asahi Kasei Microsystems

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AK4120
Asahi Kasei Microsystems

Part Number AK4120
Description Sample Rate Converter
Page 30 Pages


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ASAHI KASEI
[AK4120]
www.DataSheet4U.com
AK4120
Sample Rate Converter with Mixer and Volume
GENERAL DESCRIPTION
The AK4120 is a stereo asynchronous sample rate converter. The input sample rate range is from 8kHz
to 48kHz. The output sample rate is fixed at 32kHz, 44.1kHz, 48kHz or 96kHz. AK4120 includes a
digital mixer and digital volume control. Applications for this device include pro audio mastering,
consumer format conversion and desktop audio production and playback.
FEATURES
o Stereo Asynchronous Sample Rate Converter
o Digital Mixer
o Digital Volume
o Input Sample Rate Range (FSI): 8kHz to 48kHz
o Output Sample Rate (FSO): 32kHz, 44.1kHz, 48kHz and 96kHz
o Input to Output Sample Rate Ratio: FSO/FSI = 0.667 to 6
o THD+N: –113dB at 1kHz input
o I/F format: MSB justified (20bit), LSB justified (16bit/20bit), I2S
o Master clock: 256/512fs
o 3-wire Serial or I2C Bus µP I/F for mode setting
o Power Supply: 2.7 to 3.6V
SDTI1
ILRCK1
IBICK1
IMCLK1
IMCLK2
SDTI2
ILRCK2
IBICK2
Input#1
Audio
I/F
I2C I2S
Sample
Rate
Converter
PDN
Volume#1
Input#2
Audio
I/F
Volume#2
Output
Audio
I/F
µ P I/F
I2MODE
CAD0
CSN/CAD1 CCLK/SDL CDTI/SDA
OMODE
VDD
VSS
TEST
OMCLK
SDTO
OLRCK
OBICK
MS0134-E-00
-1-
2002/1



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ASAHI KASEI
n Ordering Guide
AK4120VF
AKD4120
-40 +85°C
24pin VSOP (0.65mm pitch)
Evaluation Board for AK4120
n Pin Layout
[AK4120]
www.DataSheet4U.com
IMCLK1
SDTI1
IBICK1
ILRCK1
TEST
I2S
I2C
CAD0
CSN/CAD1
CCLK/SCL
CDTI/SDA
PDN
1
2
3
4
5
6
7
8
9
10
11
12
Top
View
24 IMCLK2
23 SDTI2
22 IBICK2
21 ILRCK2
20 I2MODE
19 VDD
18 VSS
17 OMODE
16 OMCLK
15 SDTO
14 OBICK
13 OLRCK
MS0134-E-00
-2-
2002/1



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ASAHI KASEI
No. Pin Name
1 IMCLK1
2 SDTI1
3 IBICK1
4 ILRCK1
5 TEST
6 I2S
7 I2C
8 CAD0
9 CSN
CAD1
CCLK
10
SCL
11 CDTI
SDA
12 PDN
13 OLRCK
14 OBICK
15 SDTO
16 OMCLK
17 OMODE
18 VSS
19 VDD
20 I2MODE
21 ILRCK2
22 IBICK2
23 SDTI2
24 IMCLK2
[AK4120]
www.DataSheet4U.com
PIN/FUNCTION
I/O Function
I Master Clock Input Pin for Input#1
I Audio Serial Data Input Pin for Input#1
I Audio Serial Data Clock Pin for Input#1
I L/R Clock Pin for Input#1
I Test Pin. Connect to VSS.
Audio I/F Select Pin
I “L”: Set by Register, “H”: I2S
I I2C Select Pin. “L”: 3-wire, “H”: I2C
I Chip Address 0 Pin
I Chip Select Pin in 3wire serial control mode in 3-wire Serial Control Mode.
I Chip Address 1 Pin in I2C control mode.
Control Data Clock Pin in 3wire serial control mode in 3-wire Serial Control
I
Mode.
I Control Data Clock Pin in I2C control mode.
I
Control Data Input Pin in 3wire serial control mode in 3-wire Serial Control
Mode.
I/O Control Data Pin in I2C serial control mode in I2C control mode.
I Power-Down pin
When “L”, the AK4120 is powered-down and reset.
I/O L/R Clock Pin for Output
I/O Audio Serial Data Clock Pin for Output
O Audio Serial Data Pin for Output
I Master Clock Pin for Output
I
Master/Slave select pin for Output Audio Data
“L”: Slave, “H”: Master
I Digital Ground Pin
I Digital Power Supply Pin, 3.3V
I Master/Slave select pin for Input Audio Data #2
“L”: Slave, “H”: Master
I/O L/R Clock Pin for Input#2
I/O Audio Serial Data Clock Pin for Input#2
I Audio Serial Data Input Pin for Input#2
I Master Clock Input Pin for Input#2
MS0134-E-00
-3-
2002/1



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ASAHI KASEI
[AK4120]
www.DataSheet4U.com
(VSS=0V; Note 1)
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
min
max
Power Supplies
VDD
-0.3
4.6
Input Current, Any Pin Except Supplies
IIN -
±10
Input Voltage
VIN -0.3
VDD+0.3
Ambient Temperature (Power applied)
Ta -40
85
Storage Temperature
Tstg -65
150
Note 1: All voltages with respect to ground.
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
RECOMMENDED OPERATING CONDITIONS
(VSS=0V; Note 2)
Parameter
Symbol
min
typ
Power Supplies
VDD 2.7 3.3
Note 2: All voltages with respect to ground.
max
3.6
Units
V
mA
V
°C
°C
Units
V
SRC PERFORMANCE
(Ta=-4085°C; VDD = 2.73.6V; data = 20bit; measurement bandwidth = 20Hz~ FSO/2; unless otherwise specified.)
Parameter
Symbol min typ max Units
Resolution
20 Bits
Input Sample Rate (Note 3)
FSI 8
48 kHz
Output Sample Rate (Note 4)
FSO 32
96 kHz
Dynamic Range (Input= 1kHz, -60dBFS, Note 5)
FSO/FSI=44.1kHz/48kHz
- 115 - dB
FSO/FSI=48kHz/44.1kHz
FSO/FSI=32kHz/48kHz
FSO/FSI=96kHz/32kHz
- 116 - dB
- 114 - dB
- 119 - dB
Worst Case (FSO/FSI=32kHz/48kHz)
Dynamic Range (Input= 1kHz, -60dBFS, A-weighted, Note 5)
FSO/FSI=44.1kHz/48kHz
112 -
- dB
- 117 - dB
THD+N
(Input= 1kHz, 0dBFS, Note 5)
FSO/FSI=44.1kHz/48kHz
- -112 - dB
FSO/FSI=48kHz/44.1kHz
FSO/FSI=32kHz/48kHz
FSO/FSI=96kHz/32kHz
- -113 - dB
- -111 - dB
- -111 - dB
Worst Case (FSO/FSI=48kHz/8kHz)
- - -103 dB
Ratio between Input and Output Sample Rate
(FSO/FSI, Note 6, Note 7)
FSO/FSI 0.667
6-
Note 3. 32kHz~96kHz for INPUT#2 at Path Mode 0. 8kHz~96kHz at Path Mode 2 and 3.
Note 4. Min = 8kHz at Path Mode 2 and 3.
Note 5. Measured by Rohde & Schwarz UPD04, Rejection Filter= wide, 8192point FFT. Refer Figure 1 and Figure 2.
Note 6. The “0.667” is the ratio of FSO/FSI when FSI is 48kHz and FSO is 32kHz
Note 7. The “6” is the ratio when FSI is 8kHz and FSO is 48kHz.
MS0134-E-00
-4-
2002/1



AK4120 datasheet pdf
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