Production Data
Test Conditions
o
WM8973L
DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, T
A
= +25 C, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio
data unless otherwise stated.
PARAMETER
Output Power at 1% THD
Abs. Max Power Ouptut
Total Harmonic Distortion
Signal to Noise Ratio
(A-weighted)
Analogue Reference Levels
Midrail Reference Voltage
Buffered Reference Voltage
Microphone Bias
Bias Voltage
Bias Current Source
Output Noise Voltage
Digital Input / Output
Input HIGH Level
Input LOW Level
Output HIGH Level
Output LOW Level
HPDETECT (pin 23)
Input HIGH Level
Input LOW Level
V
IH
V
IL
0.7AVDD
0.3AVDD
V
V
V
IH
V
IL
V
OH
V
OL
I
OH
= +1mA
I
OL
= -1mA
0.9DBVDD
0.1DBVDD
0.7DBVDD
0.3DBVDD
V
V
V
V
V
MICBIAS
I
MICBIAS
Vn
1K to 20kHz
15
3mA load current
–5%
0.9AVDD
+ 5%
3
V
mA
nV/Hz
VMID
VREF
–3%
–3%
AVDD/2
AVDD/2
+3%
+3%
V
V
SYMBOL
P
O
P
O
max
THD
SNR
Po=200mW, R
L
=8,
HPVDD=3.3V
HPVDD=3.3V, R
L
=8
TEST CONDITIONS
THD = 1%
MIN
TYP
330
500
-63
0.07
95
MAX
UNIT
mW (rms)
mW (rms)
dB
%
dB
Speaker Output (LOUT2/ROUT2 with 8 bridge tied load, ROUT2INV=1)
w
PD, Rev 4.5, December 2011
9
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
