WM9082 WOLFSON [Wolfson Microelectronics plc], WM9082 Datasheet - Page 5

• Manufacturer Part Number: WM9082
• Description: PDM Input Mono 3W Class D Speaker Driver
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

Production Data
w
ELECTRICAL CHARACTERISTICS
Test Conditions
SPKVDD = 3.6V, DVDD = 1.8V, SPKGND=GND = 0V, T
1kHz signal, CLK=6.144MHz (128fs), fs=48kHz unless otherwise stated.
Speaker Driver
Signal to Noise ratio
Idle channel noise
Total Harmonic
Distortion + Noise
Output Power
(THD+N = 1%)
Speaker Load resistance
(see note 1)
Speaker Load
capacitance
(see note 1)
PSRR (SPKVDD)
Power efficiency
Clocking (IN1 or IN2)
CLK input
Digital Input (IN1 or IN2)
Input high level
(see note 1)
Input low level
(see note 1)
Input capacitance
(see note 1)
Input leakage
Other Parameters
Pop-free start-up time
Shutdown time
PARAMETER
SYMBOL
THD+N
PSRR
SNR
P
O
A-weighted
A-weighted
P
R
R
R
R
Direct connection to
SPKOUTP+SPKOUTN
200mV (peak-peak) 217Hz
Idle digital audio input while in
the ON state
R
SPKVDD = 3.6V
R
SPKVDD = 3.6V
fs = 48kHz
fs = 44.1kHz
fs = 32kHz
‘OFF’ state to ‘ON’ state
(see Figure 3)
‘ON’ state to ‘OFF’ state
(see Figure 3)
O
L
L
L
L
L
L
= 4, SPKVDD = 3.6V
= 4, SPKVDD = 5.0V
= 8, SPKVDD = 3.6V
= 8, SPKVDD = 5.0V
= 4, P
= 8, P
= 625mW
TEST CONDITIONS
O
O
A
= 625mW,
= 625mW,
= +25
o
C, Load = 4Ω+33µH,
0.7 x DVDD
-0.9
MIN
3
5.6448
6.144
4.096
0.65
1.25
TYP
-70
1.3
2.5
92
66
70
82
86
1
1
PD, August 2012, Rev 4.1
0.3 x DVDD
MAX
200
0.9
10
WM9082
V
UNIT
MHz
dB
dB
dB
A
ms
ms
pF
pF
W

%
V
V
RMS
5