Datasheet

MAX9710/MAX9711
3W Mono/Stereo BTL Audio Power Amplifiers
with Shutdown
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= PV
DD
= 5.0V, V
GND
= V
PGND
= V
MUTE
= 0V, V
SHDN
= 5V, R
IN
= R
F
= 15kΩ, R
L
= ∞. 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.
Note 1: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 2: PSSR is specified with the amplifier inputs connected to GND through R
IN
and C
IN
.
V
DD
to GND, PGND ...............................................................+6V
PV
DD
to V
DD
.......................................................................±0.3V
PGND to GND.....................................................................±0.3V
All Other Pins to GND.................................-0.3V to (V
DD
+ 0.3V)
Continuous Input Current (into any pin
except power supply and output pins).........................±20mA
Continuous Power Dissipation (T
A
= +70°C)
12-Pin Thin QFN (derate 16.9mW/°C above +70°C) ....1349mW
20-Pin Thin QFN (derate 20.8mW/°C above +70°C) ....1667mW
Operating Temperature Range............................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
DD
/PV
DD
Inferred from PSRR test 4.5 5.5 V
MAX9710 12 30
Quiescent Supply Current
(I
VDD
+ I
PVDD
)
I
DD
MAX9711 7 17
mA
Shutdown Supply Current I
SHDN
SHDN = GND 0.5 30 µA
C
BIAS
= 1µF (10% of final value) 300
Turn-On Time t
ON
C
BIAS
= 0.1µF (10% of final value) 30
ms
Thermal Shutdown Threshold 160 °C
Thermal Shutdown Hysteresis 15 °C
OUTPUT AMPLIFIERS
Output Offset Voltage V
OS
V
OUT_+
- V
OUT_-
, A
V
= 2 ±2 ±14 mV
V
DD
= 4.5V to 5.5V 82 100
f = 1kHz 87
Power-Supply Rejection Ratio PSRR
V
RIPPLE
= 200mV
P-P
(Note 2)
f = 20kHz 74
dB
R
L
= 8Ω 1.1 1.4
R
L
= 4Ω 2.6Output Power P
OUT
f
IN
= 1kHz,
THD+N < 1%
R
L
= 3Ω 3
W
P
OUT
= 1.2W, R
L
= 8Ω 0.005
Total Harmonic Distortion Plus
Noise
THD+N
f
IN
= 1kHz, BW =
22Hz to 22kHz
P
OUT
= 2W, 4Ω 0.01
%
Signal-to-Noise Ratio SNR R
L
= 8Ω, V
OU T
= 2.8V
RM S
, BW = 22H z to 22kH z95 dB
Slew Rate SR 1.6 V/µs
Maximum Capacitive Load Drive C
L
No sustained oscillations 1 nF
Crosstalk f
IN
= 10kHz 77 dB
BIAS VOLTAGE (BIAS)
BIAS Voltage V
BIAS
2.35 2.5 2.65 V
Output Resistance R
BIAS
50 kΩ
DIGITAL INPUTS (MUTE, SHDN)
Input Voltage High V
IH
2V
Input Voltage Low V
IL
0.8 V
Input Leakage Current I
IN
±1µA