wm8782a Wolfson Microelectronics plc, wm8782a Datasheet - Page 6

• Manufacturer Part Number: wm8782a
• Description: 24-bit, 192khz Stereo Adc
• Manufacturer: Wolfson Microelectronics plc

WM8782A
Notes:
w
PARAMETER
Digital supply range
Analogue supply range
Ground
Operating temperature range
RECOMMENDED OPERATING CONDITIONS
1.
ELECTRICAL CHARACTERISTICS
Test Conditions
DVDD = 3.3V, AVDD = 5.0V, T
unless otherwise stated.
PARAMETER
ADC Performance – WM8782SEDS, WM8782SEDS/R (+25˚C)
Full Scale Input Signal Level
(for ADC 0dB Input)
Input resistance, using
recommended external resistor
network on p22.
Input capacitance
Signal to Noise Ratio
(see Terminology note 1,2,4)
Signal to Noise Ratio
(see Terminology note 1,2,4)
Total Harmonic Distortion
Dynamic Range
Channel Separation
(see Terminology note 4)
Channel Level Matching
Channel Phase Deviation
Power Supply Rejection Ratio
Digital supply DVDD must never be more than 0.3V greater than AVDD.
A
= +25
SYMBOL
DGND,AGND
PSRR
o
C, 1kHz signal, A-weighted, fs = 48kHz, MCLK = 256fs, 24-bit audio data, Slave Mode
SNR
SNR
THD
DNR
SYMBOL
DVDD
AVDD
T
A
1kHz 100mVpp, applied
1kHz, -1dB Full Scale
1kHz, -1dB Full Scale
1kHz, -1dB Full Scale
TEST CONDITIONS
to AVDD, DVDD
@ fs = 192kHz
@ fs = 48kHz,
@ fs = 48kHz
@ fs = 48kHz
@ fs = 96kHz
@ fs = 96kHz
@ fs = 96kHz
@ fs = 48kHz
@ fs = 96kHz
AVDD = 3.3V
AVDD = 3.3V
Unweighted,
Unweighted,
1kHz signal
1kHz signal
1kHz Input
weighted,
weighted,
weighted,
weighted,
-60dBFS
TEST CONDITIONS
WM8782SEDS/R
WM8782SEDS/R
WM8782SEDS/R
WM8782SEDS,
WM8782SEDS,
WM8782SEDS,
93
93
MIN
2.7
2.7
-40
MIN
0.0001
100
100
1.0
-93
-93
-92
0.1
10
20
98
98
98
98
98
90
50
TYP
TYP
0
PD, April 2010, Rev 4.8
MAX
+85
MAX
3.6
5.5
Production Data
Degree
V
UNIT
kΩ
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
UNIT
°C
rms
V
V
V
6