Rainbow Electronics MAX9758 - Manual (Page 9)

MAX9756/MAX9757/MAX9758
2.3W Stereo Speaker Amplifiers and DirectDrive
Headphone Amplifiers with Automatic Level Control
_______________________________________________________________________________________ 9
TURN-ON RESPONSE (HEADPHONE MODE)
MAX9756 toc28
10ms/div
SHDN
5V/div
HPR
10mV/div
HPL
10mV/div
TURN-OFF RESPONSE (HEADPHONE MODE)
MAX9756 toc29
10ms/div
SHDN
5V/div
HPR
10mV/div
HPL
10mV/div
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9756 toc30
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.3 5.1 4.9 4.7
8
11
14
17
20
5
4.5 5.5
HPS = GND
HPS = V DD
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
MAX9756 toc31
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (nA)
5.3 5.1 4.7 4.9
100
200
300
400
500
600
0
4.5 5.5
POWER LIMITING OF SINE BURST
(FAST ATTACK AND FAST RELEASE)
MAX9756 toc32
10ms/div
OUTPUT
2V/div
CT
1V/div
POWER LIMITING OF SINE BURST
(FAST ATTACK AND SLOW RELEASE)
MAX9756 toc33
40ms/div
OUTPUT
2V/div
CT
1V/div
POWER LIMITING OF SINE BURST
(SLOW ATTACK AND SLOW RELEASE)
MAX9756 toc33
2s/div
OUTPUT
2V/div
CT
1V/div
LDO OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
MAX9756 toc35
LOAD CURRENT (mA)
DEVIATION (%)
125 100 25 50 75
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
-2.0
0 150
Typical Operating Characteristics (continued)
(V
DD
= PV
DD
= HPV
DD
= CPV
DD
= IN = +5.0V, GND = PGND = CPGND = 0V, SHDN = V
DD
, REGEN = DR = SET = GND, C
BIAS
=
1µF, C PVSS = 1µF, C1 = C2 = 1µF, PREF = unconnected, GAIN1 = 1, GAIN2 = GAIN3 = VOL = 0V, measurement BW = 22Hz to
22kHz, T A = +25°C, unless otherwise noted.)