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PDF AK7780 Data sheet ( Hoja de datos )
| Número de pieza | AK7780 | |
| Descripción | 24bit 5ch ADC & SRC + Audio DSP | |
| Fabricantes | AKM | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AK7780 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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[AK7780]
AK7780
24bit 5ch ADC & SRC + Audio DSP
GENERAL DESCRIPTION
The AK7780 is a highly integrated audio processor, including a 28-bit floating point DSP, two 24-bit stereo
ADC’s and one mono ADC. The stereo ADC’s feature high performance, achieving 96dB dynamic range,
they include 8:1 input selectors. The ADC supports sampling frequencies from 7.35 kHz to 96 kHz. The
AK7780 also includes a stereo sample rate converter (SRC), so it can be used as a master device when
it receives digital audio inputs. The DSP includes 168kbits of SRAM for audio delay data that is suitable
for creating simulated surround fields. The programmable DSP block is realized with 2560step/fs DSP. It
supports sampling frequencies from 7.35kHz to 96 kHz. The AK7780 is used to implement complete
sound field control, such as echo, 3D, parametric equalization, and other sound enhancements. It is
packaged in a 100-lead LQFP package.
FEATURES
[DSP]
Main
Word length: 28-bit (Data RAM F24.4 limited range floating point)
Instruction cycle time: 8.1 ns (2560step/fs fs=48kHz; 1280step/fs fs=96kHz)
Multiplier: 24 x 16 → 40-bit (Double precision available)
Divider: 24 / 24 → 24-bit
ALU: 44-bit arithmetic operation (overflow margin: 4-bits)
F24.4 arithmetic and logic operation
Shift+Register: Flexible setting
Program RAM: 2048 x 36-bit
Coefficient RAM: 2048 x 16-bit
Data RAM: 2048 x 28-bit (F24.4[sign bit + 23-bit mantissa + 4-bit exponent])
Offset RAM: 64 x 13-bit
Internal Delay RAM: 168kbits
( 6144 x 28 bit / 2048 x 28 bit + 8192 x 14 bit / 3072 x 28 bit + 6144 x 14 bit
/ 4096 x 28 bit + 4096 x 14 bit) 4 pattern setting
28bit = F24.4 [24 bit sign & mantissa: 4 bit exponent]
14bit = F10.4 [10 bit sign & mantissa: 4 bit exponent]
Sampling frequency: 7.35kHz ~ 96kHz
Serial interface port for microcontroller or I2C BUS control
Master Clock: 2560fs (generated by PLL from 32fs ,64fs, 256fs and 384fs)
Master/Slave operation
Serial signal input port (10ch): MSB justified 24-bit / LSB justified 16/20/24-bit and I2S
Serial signal output port(12ch): MSB justified 24-bit / LSB justified 24,16-bit and I2S
(SDOUT1,SDOUT2 and SDOUT3)
[ADC]
4 channels (2 stereo pairs)
24-bit 64X over-sampling delta-sigma (fs = 7.35kHz ~ 96kHz)
DR, S/N: 96dBA (fs = 48kHz, fully-differential input)
S/(N+D): 92dB (fs = 48kHz)
Digital HPF (fc = 1Hz)
MS0581-E-00-PB
-1-
2007/09
1 page  
■ Ordering Guide
AK7780VQ
AKD7780
■ Pin layout
-40 ∼ +85°C 100pin LQFP(0.5mm pitch)
Evaluation Board for AK7780
[AK7780]
TESTO
AINM
AINR4
AINL4
AINR3
AINL3
AINR2
AINL2
AVDD
VREFH
VCOM
VREFL
AVSS
AINR-
AINR+
AINL-
AINL+
AINR5
AINL5
AINR6
AINL6
AINR7
AINL7
AINR8
AINL8
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
100 pin LQFP
(TOP VIEW)
50 SO
49 DVDD
48 DVSS
47 DVDD18
46 SCLK/SCL
45 SI / CAD0
44 RQ / CAD1
43 P_DSPRST
42 P_ADRST
41 P_CKRST
40 INIT_RESET
39 DVSS
38 DVDD18
37 LRCLK_I
36 BITCLK_I
35 SDIN5
34 SDIN4
33 SDIN3
32 SDIN2
31 DVDD18
30 DVSS
29 DVDD
28 CLKO1
27 SDOUT5
26 SDOUT4
pin
Input
Output
I/O
Power
MS0581-E-00-PB
-5-
2007/09
5 Page 
[AK7780]
ABSOLUTE MAXIMUM RATINGS
(AVSS = BVSS = DVSS = 0V: All indicated voltages are with respect to ground.)
Item
Symbol
min
Power supply voltage
Analog(AVDD)
VA -0.3
Digital(DVDD)
Digital(DVDD18)
VD
VD18
-0.3
-0.3
|AVSS(BVSS) – DVSS|
(Note 4) ΔGND
Input current (except for power supply pin )
IIN
-
Analog input voltage
AINL+, AINL–, AINR+, AINR–,
AINL2-8, AINR2-8, AINM
VINA
-0.3
VREFH,VREFL
Digital input voltage
VIND
-0.3
Operating ambient temperature
Ta -40
Storage temperature
Tstg -65
max
4.3
4.3
2.5
0.3
±10
VA+0.3
VD+0.3
85
150
Note 4. AVSS (BVSS) should be at the same level as DVSS.
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these critical conditions.
Unit
V
V
V
V
mA
V
V
°C
°C
RECOMMENDED OPERATING CONDITIONS
(AVSS = BVSS = DVSS = 0V: All indicated voltages are with respect to ground.)
Items
Symbol min typ max Unit
Power supply voltage
AVDD
VA 3.0 3.3 3.6
V
DVDD
VD 3.0 3.3 3.6
V
DVDD18
VD18 1.7 1.8 2.0
V
Reference voltage (VREF)
VREFH (Note 5)
VRH
VA
V
VREFL (Note 6)
VRL
0.0
V
Note 5. VREFH normally connects to AVDD.
Note 6. VREFL normally connects to AVSS
Note: The analog input voltage and output voltage are proportional to the VREFH-VREFL voltages.
* AKEMD assumes no responsibility for the usage beyond the conditions in this datasheet.
MS0581-E-00-PB
- 11 -
2007/09
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet AK7780.PDF ] | |
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