WM8521 Production Data
w
PD, Rev 4.2, February 2013
6
DC ELECTRICAL CHARACTERISTICS
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
WM8521HC Analogue
supply range
AVDD 7.6 12 13.2 V
WM8521H9 Analogue
supply range
AVDD 7.6 9 13.2 V
Digital supply range
DVDD 2.7 3.3 3.6 V
Ground
AGND / DGND 0 V
WM8521HC Supply current
I
AVDD
AVDD = 12V 28.0 mA
I
DVDD
DVDD = 3.3V 4.0
WM8521H9 Supply current
I
AVDD
AVDD = 9V 25.0 mA
I
DVDD
DVDD = 3.3V 4.0
WM8521HC Power down
current (note 4)
I
AVDD
AVDD = 12V 22.8 mA
I
DVDD
DVDD = 3.3V 0.014
WM8521H9 Power down
current (note 4)
I
AVDD
AVDD = 9V 17.1 mA
I
DVDD
DVDD = 3.3V 0.014
Note:
1. AVDD and DVDD are fully independent and can be applied in any order without damage to the device.
ELECTRICAL CHARACTERISTICS
Test Conditions
WM8521HC: AVDD = 12V, DVDD = 3.3V, AGND / DGND = 0V, T
A
= +25
o
C, fs = 48kHz, MCLK = 256fs unless otherwise stated.
WM8521H9: AVDD = 9V, DVDD = 3.3V, AGND / DGND = 0V, T
A
= +25
o
C, fs = 48kHz, MCLK = 256fs unless otherwise stated.
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Digital Logic Levels (CMOS Levels)
Input LOW level V
IL
0.3 x DVDD V
Input HIGH level V
IH
0.7 x DVDD V
Output LOW V
OL
I
OL
= 1mA 0.1 x DVDD V
Output HIGH V
OH
I
OH
= -1mA 0.9 x DVDD V
Analogue Reference Levels
Reference voltage (CAP)
AVDD/2 V
Potential divider resistance R
CAP
VDD to CAP and CAP
to GND
50 k
WM8521HC DAC Output (Load = 10k . 50pF)
0dBFs Full scale output voltage
At DAC outputs 1.9 2.0 2.1 V
rms
SNR (Terminology Note 1,2,3)
A-weighted,
@ fs = 48kHz
91 98 dB
SNR (Terminology Note 1,2,3)
A-weighted
@ fs = 96kHz
98 dB
SNR (Terminology Note 1,2,3)
on A weighted @ fs =
48kHz
95 dB
THD (Note 3)
1kHz, 0dBFs -81 dB
Dynamic Range (Note 2)
1kHz, THD+N @
-60dBFs
91 98 dB
DAC Channel Separation
1kHz, 0dBFs 93 dB
Power Supply Rejection Ratio
PSRR 1kHz 100mVpp 46 dB
WM8521H9 DAC Output (Load = 10k . 50pF)
0dBFs Full scale output voltage
At DAC outputs 1.9 2.0 2.1 V
rms
SNR (Terminology Note 1,2,3)
A-weighted,
@ fs = 48kHz
91 96 dB