Datasheet

MAX4364/MAX4365
1.4W and 1W, Ultra-Small, Audio Power
Amplifiers with Shutdown
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—3V
(V
CC
= 3V, R
L
= ∞, C
BIAS
= 1µF to GND, V
SHDN
= V
GND
, T
A
= +25°C, unless otherwise noted.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4364 6
Supply Current I
CC
(Note 4)
MAX4365 4.5
mA
Shutdown Supply Current I
SHDN
V
SHDN
= V
CC
10 nA
MAX4364 400 500
Output Power P
OUT
R
L
= 8Ω, THD+N =
1%, f
IN
= 1kHz
(Note 8)
MAX4365 350 450
mW
MAX4364,
P
OUT
= 400mW
0.05
Total Harmonic Distortion Plus
Noise
THD + N
A
V
= -2V/V, R
L
= 8Ω,
f
IN
= 1kHz (Notes 5, 9)
MAX4365,
P
OUT
= 400mW
0.08
%
Note 3: All specifications are 100% tested at T
A
= +25°C.
Note 4: Quiescent power-supply current is specified and tested with no load on the outputs. Quiescent power-supply current
depends on the offset voltage when a practical load is connected to the amplifier.
Note 5: Guaranteed by design, not production tested.
Note 6: Common-mode bias voltage is the voltage on BIAS and is nominally V
CC
/2.
Note 7: Maximum differential-output offset voltage is tested in a unity-gain configuration. V
OS
= V
OUT+
- V
OUT-
.
Note 8: Output power is specified by a combination of a functional output-current test, and characterization analysis.
Note 9: Measurement bandwidth for THD+N is 22Hz to 22kHz.
Note 10: Extended short-circuit conditions result in a pulsed output.
ELECTRICAL CHARACTERISTICS—5V (continued)
(V
CC
= 5V, R
L
= ∞, C
BIAS
= 1µF to GND, V
SHDN
= V
GND
, T
A
= +25°C, unless otherwise noted.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4364,
P
OUT
= 1W
0.04
Total Harmonic Distortion Plus
Noise
THD+N
A
V
= -2V/V, R
L
= 8Ω,
f
IN
= 1kHz (Notes 5, 9)
MAX4365,
P
OUT
= 750mW
0.1
%
Noise f
IN
= 10kHz, BW = 22Hz to 22kHz 12 µV
RMS
Short-Circuit Current I
SC
OUT+ to OUT- (Note 10) 600 mA
Thermal Shutdown Threshold 160
o
C
Thermal Shutdown Hysteresis 15
o
C
T
A
= +25°C 50
Power-Up Time t
PU
C
BIAS
= 0.22µF, T
A
= -40°C to +85°C
(Note 5)
14 35
ms
Shutdown Time t
SHDN
10 µs
T
A
= +25°C 50
Enable Time from Shutdown t
ENABLE
C
BIAS
= 0.22µF, T
A
= -40°C to +85°C
(Note 5)
12 35
ms