Datasheet

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
Continuous Power Dissipation (T
A
= +70°C)
56-Pin Thin QFN (derate 47.6mW/°C above +70°C) ....3.81W
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
Lead Temperature (soldering, 10s) ................................. +300°C
(PV
DD
= V
DD
= +20V, 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)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
DD
Inferred from PSRR test 10 22 V
Shutdown Current I
SHDN
SHDN = low 0.1 1 µA
Shutdown to Full Operation t
SON
100 ms
Mute to Full Operation t
MUTE
100 ms
Input Impedance R
IN
G1 = 0, G2 = 1 50 85 125
kΩ
G1 = 1, G2 = 1 40 63 90
G1 = 1, G2 = 0 25 43 60
G1 = 0, G2 = 0 12 21 30
Output Pulldown Resistance SHDN = GND 600 kΩ
Output Offset Voltage V
OS
AC-coupled input, measured between
OUT_+ and OUT_-
3 ±40 mV
Power-Supply Rejection Ratio PSRR
PV
DD
= 10V to 22V 67 90
dB
200mV
P-P
ripple
(Note 2)
f
RIPPLE
= 1kHz 90
f
RIPPLE
= 20kHz 52
Common-Mode Rejection Ratio CMRR
DC, input referred 49 70
dB
f = 20Hz to 20kHz, input referred 60
Switch On-Resistance R
DS
One power switch 0.3 0.6 Ω
Switching Frequency f
SW
FS1 FS2
kHz
0 0 180 200 220
1 1 (SSM) 200
1 0 160
0 1 250
Oscillator Spread Bandwidth FS1 = FS2 = high (SSM) ±2 %
SYNCIN Lock Range Equal to f
SW
x 4 600 1200 kHz
MAX9709 25W/50W, Filterless, Spread-Spectrum,
Stereo/Mono, Class D Amplier
www.maximintegrated.com
Maxim Integrated │ 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.
Electrical Characteristics