Datasheet

MAX4364/MAX4365
1.4W and 1W, Ultra-Small, Audio Power
Amplifiers with Shutdown
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
CC
= 5V, THD+N measurement bandwidth = 22Hz to 22kHz, T
A
= +25°C, unless otherwise noted.)
GAIN AND PHASE vs. FREQUENCY
MAX4364 toc39
FREQUENCY (Hz)
GAIN/PHASE (dB/DEGREES)
1M100k10k1k100
-160
-140
-120
-100
-80
-60
-40
-20
0
20
40
60
80
-180
10 10M
A
V
= 1000V/V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX4364 toc40
FREQUENCY (Hz)
PSRR (dB)
10k1k100
-70
-60
-50
-40
-30
-20
-80
10 100k
R
L
= 8
Ω
V
RIPPLE
= 200mV
P-P
Pin Description
PIN
MAX4364 MAX4365
SO µMAX/TDFN
NAME FUNCTION
1 7 SHDN Active-High Shutdown. Connect SHDN to GND for normal operation.
2 1 BIAS
DC Bias Bypass. See BIAS Capacitor section for capacitor selection. Connect C
BIAS
capacitor from BIAS to GND.
3 2 IN+ Noninverting Input
4 4 IN- Inverting Input
5 5 OUT+ Bridged Amplifier Positive Output
66V
CC
Power Supply
7 3 GND Ground
8 8 OUT- Bridged Amplifier Negative Output
——EP
Exposed Pad (TDFN Only). Internally connected to GND. Connect to a large ground
plane to maximize thermal performance. Not intended as an electrical connection point.
MAX4365
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX4364 toc38
TEMPERATURE (
°
C)
SUPPLY CURRENT (nA)
3510-15
20
30
10
40
50
60
70
80
0
-40 85
60
V
CC
= 5V
MAX4365
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX4364 toc37
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
4.84.13.4
2
4
6
8
12
0
2.7 5.5
10