Pre-Production
WM8976
Test Conditions
DCVDD=1.8V, AVDD=DBVDD=SPKVDD= 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise
stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
52
MAX
UNIT
dB
Power Supply Rejection Ratio
(50Hz-22kHz)
PSRR
RL = 10kΩ
RL = 10kΩ
56
dB
SPKVDD=5V (boost)
Microphone Bias
Bias Voltage
VMICBIAS
MBVSEL=0
MBVSEL=1
0.9*AVDD
V
V
0.65*AVDD
Bias Current Source
Output Noise Voltage
Digital Input / Output
Input HIGH Level
Input LOW Level
IMICBIAS
Vn
3
mA
1K to 20kHz
15
nV/√Hz
VIH
VIL
0.7×DBVDD
0.9×DBVDD
V
V
0.3×DBVDD
Output HIGH Level
Output LOW Level
Input capacitance
Input leakage
VOH
VOL
IOL=1mA
IOH-1mA
V
0.1xDBVDD
V
TBD
TBD
pF
pA
PP Rev 3.0 April 2006
9
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
