WM8728
Production Data
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
AVDD = 5V
DVDD = 5V
AVDD = 3.3V
DVDD = 3.3V
SYMBOL
DVDD
AVDD
AGND, DGND
-0.3
TEST CONDITIONS
MIN
3.0
3.0
0
0
19
8
18
4
+0.3
TYP
MAX
5.5
5.5
UNIT
V
V
V
V
mA
mA
mA
mA
Note:
DVDD supply needs to be active before AVDD supply for correct device power on reset. See Power Supply Timing section.
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD, DVDD = 5V, AGND = 0V, DGND = 0V, T
A
= +25
o
C, fs = 48kHz, MCLK = 256fs unless otherwise stated.
PARAMETER
Digital Logic Levels (TTL Levels)
Input LOW level
Input HIGH level
Output LOW
Output HIGH
Analogue Reference Levels
Reference voltage
VMID
(VREFP -
VREFN)/2 -
50mV
(VREFP -
VREFN)/2
10k
At DAC outputs
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
1.1 x
AVDD/5
106
106
106
102
(VREFP -
VREFN)/2 +
50mV
V
V
IL
V
IH
V
OL
V
OH
I
OL
= 1mA
I
OH
= 1mA
DVDD – 0.3V
2.0
DGND + 0.3V
0.8
V
V
V
V
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Potential divider resistance
DAC Output (Load = 10kΩ 50pF)
0dBFs Full scale output voltage
SNR (Note 1,2,3)
SNR (Note 1,2,3)
SNR (Note 1,2,3)
SNR (Note 1,2,3)
R
VMID
Ω
Vrms
dB
dB
dB
dB
SNR (Note 1,2,3)
102
dB
SNR (Note 1,2,3)
THD (Note 1,2,3)
THD+N (Dynamic range, Note 2)
DAC channel separation
103
-97
100
106
100
dB
dB
dB
dB
w
PD, Rev 4.6, August 2008
6
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
