參數(shù)資料
型號(hào): WM8782
廠商: Wolfson Microelectronics
元件分類: ADC
英文描述: 24-Bit, 192kHz Stereo ADC
中文描述: 24位192kHz立體聲ADC
文件頁(yè)數(shù): 6/19頁(yè)
文件大?。?/td> 216K
代理商: WM8782
WM8782
Product Preview
w
PP, May 2004, Rev 1.0
6
ELECTRICAL CHARACTERISTICS
Test Conditions
DVDD = 3.3V, AVDD = 5.0V, T
A
= +25
o
C, 1kHz signal, A-weighted, fs = 48kHz, MCLK = 256fs, 24-bit audio data, Slave Mode
unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
ADC Performance
Full Scale Input Signal Level
(for ADC 0dB Input)
Input resistance, using
recommended external resistor
network on p17.
Input capacitance
A-weighted,
@ fs = 48kHz
Unweighted,
@ fs = 48kHz
A-weighted,
@ fs = 48kHz, AVDD =
3.3V
A-weighted,
@ fs = 96kHz
Unweighted,
@ fs = 96kHz
A-weighted,
@ fs = 96kHz, AVDD =
3.3V
1kHz, -1dB Full Scale
@ fs = 48kHz
1kHz, -1dB Full Scale
@ fs = 96kHz
1kHz, -1dB Full Scale
@ fs = 192kHz
Dynamic Range
DNR
-60dBFS
ADC Channel Separation
(see Terminology note 4)
20kHz
Channel Level Matching
1kHz signal
Channel Phase Deviation
1kHz signal
1kHz 100mVpp, applied
to AVDD, DVDD
20Hz to 20kHz
100mVpp
Digital Logic Levels (TTL Levels)
Input LOW level
V
IL
MIN
TYP
MAX
UNIT
1.0
V
rms
10
k
20
102
pF
dB
93
100
dB
Signal to Noise Ratio
(see Terminology note 1,2,4)
SNR
100
dB
93
99
dB
99
dB
Signal to Noise Ratio
(see Terminology note 1,2,4)
SNR
99
dB
-90
dB
-90
dB
Total Harmonic Distortion
THD
-90
dB
93
102
90
dB
dB
1kHz Input
90
0.1
0.0001
50
dB
dB
Degree
dB
Power Supply Rejection Ratio
PSRR
45
dB
0.8
+1
V
Input HIGH level
Input leakage current – digital pad
Input leakage current – digital
tristate input (Note 3)
Input capacitance
Output LOW
Output HIGH
V
IH
2.0
-1
V
μA
μA
±0.2
85
5
pF
V
V
V
OL
V
OH
I
OL
=1mA
I
OH
=
-1mA
0.1 x DVDD
0.9 x DVDD
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