
M
20W/40W, Filterless, Spread-Spectrum,
Mono/Stereo, Class D Amplifier
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
PV
DD
, V
DD
to PGND, GND.......................................-0.3 to +30V
PV
DD
to V
DD
..........................................................-0.3V to +0.3V
OUTR+, OUTR-, OUTL+,
OUTL- to PGND, GND...........................-0.3V to (PV
DD
+ 0.3V)
C1N to GND.............................................-0.3V to (PV
DD
+ 0.3V)
C1P to GND..............................(PV
DD
- 0.3V) to (CPV
DD
+ 0.3V)
CPV
DD
to GND..........................................(PV
DD
- 0.3V) to +40V
All Other Pins to GND.............................................-0.3V to +12V
Continuous Input Current (except PV
DD
, V
DD
, OUTR+,
OUTR-, OUTL+, and OUTL-) ...........................................20mA
ELECTRICAL CHARACTERISTICS
(PV
DD
= V
DD
= +18V, PGND = GND = 0V, C
SS
= 0.47μF, C
REG
= 0.01μF, C1 = 0.1μF, C2 = 1μF, R
LOAD
=
∞
, MONO = low (stereo
mode),
SHDN
=
MUTE
= high, G1 = low, G2 = high (A
V
= 22dB), FS1 = FS2 = high (SSM), SYNCIN = low. All load resistors (R
L
) are
connected between OUT_+ and OUT_-, unless otherwise stated. T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Continuous Power Dissipation (T
A
= +70°C)
56-Pin Thin QFN (derate 47.6mW/°C above +70°C) ......3.81W
64-Pin TQFP (derate 43.5mW/°C above +70°C).............3.48W
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature......................................................+150°C
Thermal Resistance (
θ
JC
)
56-Pin Thin QFN… .......................................................0.6°C/W
64-Pin TQFP….................................................................2°C/W
Lead Temperature (soldering, 10s).................................+300°C
PARAMETER
SYMBOL
V
DD
I
SHDN
t
SON
t
MUTE
CONDITIONS
MIN
10
TYP
MAX
18
1
UNITS
V
μA
ms
ms
Supply Voltage Range
Shutdown Current
Shutdown to Full Operation
Mute to Full Operation
Inferred from PSRR test
SHDN
= low
0.1
100
100
85
63
43
21
600
G1 = 0, G2 = 1
G1 = 1, G2 = 1
G1 = 1, G2 = 0
G1= 0, G2 = 0
SHDN
= GND
50
40
25
12
125
90
60
30
Input Impedance
R
IN
k
Output Pulldown Resistance
k
Output Offset Voltage
V
OS
AC-coupled input, measured between
OUT_+ and OUT_-
±30
mV
PV
DD
= 10V to 18V
200mV
P-P
ripple
(Note 2)
68
90
90
50
70
70
0.3
f
RIPPLE
= 1kHz
f
RIPPLE
= 20kHz
Power-Supply Rejection Ratio
PSRR
dB
DC, input referred
f = 20Hz to 20kHz, input referred
One power switch
FS1
0
1
1
0
FS1 = FS2 = high (SSM)
Equal to f
SW
x 4
50
Common-Mode Rejection Ratio
CMRR
dB
Switch On-Resistance
R
DS
0.75
FS2
0
1 (SSM)
0
1
180
200
200
160
250
±2
220
Switching Frequency
f
SW
kHz
Oscillator Spread Bandwidth
SYNCIN Lock Range
%
kHz
600
1200