Production Data
WM8523
ELECTRICAL CHARACTERISTICS
Test Conditions
LINEVDD=AVDD=3.3V, LINEGND=AGND=0V, TA=+25°C, Slave Mode, fs=48kHz, MCLK=256fs, 24-bit data, unless otherwise
stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Analogue Output Levels
Output Level
0dBFS
1.89
1
2.1
2.31
Vrms
kΩ
Load Impedance
Load Capacitance
No external RC filter
300
1
pF
With filter shown in
Error! Reference
source not found.
μF
DAC Performance
Signal to Noise Ratio
SNR
RL = 10kΩ
A-weighted
RL = 10kΩ
Un-weighted
RL = 10kΩ
A-weighted
RL = 10kΩ
-1dBFS
100
106
104
104
-89
-86
dB
dB
dB
dB
dB
Dynamic Range
DNR
THD
Total Harmonic Distortion
RL = 10kΩ
0dBFS
AVDD + LINEVDD
PSRR
100Hz
54
54
dB
dB
Power Supply Rejection Ratio
1kHz
20kHz
50
dB
Channel Separation
1kHz
dB
100
20Hz to 20kHz
dB
95
0
System Absolute Phase
Channel Level Matching
Mute Attenuation
degrees
dB
0.1
-120
0
dB
DC Offset at LINEVOUTL and
LINEVOUTR
-1
1
mV
Digital Logic Levels
Input HIGH Level
VIH
VIL
0.7×
V
V
V
V
LINEVDD
Input LOW Level
Output HIGH Level
Output LOW Level
0.3×
LINEVDD
VOH
VOL
0.9×
LINEVDD
IOL = 1mA
0.1×
LINEVDD
IOH = -1mA
Input Capacitance
Input Leakage
10
pF
-0.9
0.9
μA
TERMINOLOGY
1. Signal-to-Noise Ratio (dB) – SNR is a measure of the difference in level between the maximum theoretical full scale output signal
and the output with no input signal applied.
2. Total Harmonic Distortion (dB) – THD is the level of the rms value of the sum of harmonic distortion products relative to the
amplitude of the measured output signal.
3. All performance measurements carried out with 20kHz low pass filter, and where noted an A-weighted filter. Failure to use such a
filter will result in higher THD and lower SNR readings than are found in the Electrical Characteristics. The low pass filter removes
out of band noise; although it is not audible it may affect dynamic specification values.
4. Mute Attenuation – This is a measure of the difference in level between the full scale output signal and the output with mute
applied.
PD, Rev 4.1, August 2011
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
