User Manual

MAX9713/MAX9714
6W, Filterless, Spread-Spectrum
Mono/Stereo Class D Amplifiers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
(All voltages referenced to GND.)
V
DD
to PGND, AGND .............................................................30V
OUTR_, OUTL_, C1N..................................-0.3V to (V
DD
+ 0.3V)
C1P............................................(V
DD
- 0.3V) to (CHOLD + 0.3V)
CHOLD........................................................(V
DD
- 0.3V) to +40V
All Other Pins to GND.............................................-0.3V to +12V
Duration of OUTR_/OUTL_
Short Circuit to GND, V
DD
......................................Continuous
Continuous Input Current (V
DD
, PGND, AGND) ...................1.6A
Continuous Input Current (all other pins)..........................±20mA
Continuous Power Dissipation (T
A
= +70°C)
MAX9713 32-Pin TQFN (derate 21.3mW/°C
above +70°C)..........................................................1702.1mW
MAX9714 32-Pin TQFN (derate 33.3mW/°C
above +70°C)..........................................................2666.7mW
Junction Temperature......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(V
DD
= 15V, GND = PGND = 0V, SHDN ≥ V
IH
, A
V
= 16dB, C
SS
= C
IN
= C
REG
= 0.47µF, C1 = 100nF, C2 = 1µF, FS1 = FS2 = GND
(f
S
= 330kHz), R
L
connected between OUTL+ and OUTL- and OUTR+ and OUTR-, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Notes 1, 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
GENERAL
Supply Voltage Range V
DD
Inferred from PSRR test 10 25 V
MAX9713 10 17.5
Quiescent Current I
DD
R
L
= ∞
MAX9714 18 23
mA
Shutdown Current I
SHDN
0.2 1.5 µA
C
SS
= 470nF 100
Turn-On Time t
ON
C
SS
= 180nF 50
ms
Amplifier Output Resistance in
Shutdown
SHDN = GND 150 330 kΩ
A
V
= 13dB 35 58 80
A
V
= 16dB 30 48 65
A
V
= 19.1dB 23 39 55
Input Impedance R
IN
A
V
= 22.1dB 20 31 42
kΩ
G1 = L, G2 = L 21.9 22.1 22.3
G1 = L, G2 = H 18.9 19.1 19.3
G1 = H, G2 = L 12.8 13 13.2
Voltage Gain A
V
G1 = H, G2 = H 15.9 16 16.3
dB
Gain Matching Between channels (MAX9714) 0.5 %
Output Offset Voltage V
OS
±1.6 ±1.3 mV
Common-Mode Rejection Ratio CMRR f
IN
= 1kHz, input referred 60 dB
V
DD
= 10V to 25V 54 76
f
RIPPLE
= 1kHz 76
Power-Supply Rejection Ratio
(Note 3)
PSRR
200mV
P-P
ripple
f
RIPPLE
= 20kHz 60
dB
R
L
= 16Ω 5.5 8
Output Power P
OUT
TH D + N = 10%,
f = 1kH z
R
L
= 8Ω 6
W