參數(shù)資料
型號: WM8728
廠商: Wolfson Microelectronics
英文描述: 24-bit, 192kHz Stereo DAC with Volume Control and DSD Support
中文描述: 24位,192kHz立體聲DAC,具有音量控制和渠務(wù)署支持
文件頁數(shù): 4/28頁
文件大?。?/td> 266K
代理商: WM8728
WM8728
Product Preview
WOLFSON MICROELECTRONICS LTD
PP Rev 1.2 April 2001
4
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Digital supply range
Analogue supply range
Ground
Difference DGND to AGND
Analogue supply current
Digital supply current
Analogue supply current
Digital supply current
SYMBOL
DVDD
AVDD
AGND, DGND
TEST CONDITIONS
MIN
3.0
3.0
TYP
MAX
5.5
5.5
UNIT
V
V
V
V
mA
mA
mA
mA
0
0
-0.3
+0.3
AVDD = 5V
DVDD = 5V
AVDD = 3.3V
DVDD = 3.3V
19
8
18
4
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD, DVDD = 5V, AGND = 0V, DGND = 0V, T
A
= +25
o
C, fs = 48kHz, MCLK = 256fs unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
Digital Logic Levels (TTL Levels)
Input LOW level
V
IL
Input HIGH level
V
IH
Output LOW
V
OL
Output HIGH
V
OH
Analogue Reference Levels
Reference voltage
MIN
TYP
MAX
UNIT
0.8
V
V
V
V
2.0
I
OL
= 1mA
I
OH
= 1mA
AGND + 0.3V
AVDD
0.3V
VMID
(VREFP -
VREFN)/2 -
50mV
(VREFP -
VREFN)/2
(VREFP -
VREFN)/2 +
50mV
V
Potential divider resistance
DAC Output (Load
= 10k ohms. 50pF)
0dBFs Full scale output voltage
R
VMID
12k
ohms
At DAC outputs
1.1 x
AVDD/5
106
Vrms
SNR (Note 1,2,3)
A-weighted,
@ fs = 48kHz
A-weighted
@ fs = 96kHz
A-weighted
@ fs = 192kHz
A-weighted,
@ fs = 48kHz
AVDD, DVDD = 3.3V
A-weighted
@ fs = 96kHz
AVDD, DVDD = 3.3V
Non
A
weighted @ fs
= 48kHz
1kHz, 0dBFs
1kHz, -60dBFs
100
dB
SNR (Note 1,2,3)
106
dB
SNR (Note 1,2,3)
106
dB
SNR (Note 1,2,3)
105
dB
SNR (Note 1,2,3)
103
dB
SNR (Note 1,2,3)
106
dB
THD (Note 1,2,3)
THD+N (Dynamic range, Note 2)
DAC channel separation
Analogue Output Levels
Output level
-97
106
100
dB
dB
dB
100
Load = 10k Ohms,
0dBFS
Load = 10k Ohms,
0dBFS,
(AVDD = 3.3V)
1.1
V
RMS
0.726
V
RMS
Gain mismatch
channel-to-channel
±1
%FSR
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