max9758etjt Maxim Integrated Products, Inc., max9758etjt Datasheet - Page 11

• Manufacturer Part Number: max9758etjt
• Description: 2.3w Stereo Speaker Amplifiers And Directdrive Headphone Amplifiers With Automatic Level Control
• Manufacturer: Maxim Integrated Products, Inc.

(V
1µF, C
22kHz, T
MAX9756 MAX9757
Headphone Amplifiers with Automatic Level Control
DD
6, 22
9,19
1
2
3
4
5
7
8
= PV
PVSS
A
DD
= +25°C, unless otherwise noted.)
2.3W Stereo Speaker Amplifiers and DirectDrive
= 1µF, C1 = C2 = 1µF, PREF = unconnected, GAIN1 = 1, GAIN2 = GAIN3 = VOL = 0V, measurement BW = 22Hz to
= HPV
5, 21
8,18
PIN
32
110
100
1
2
3
4
6
7
90
80
70
60
50
40
30
20
10
10
DD
______________________________________________________________________________________
C
10Hz TO 100kHz
OUT
= CPV
LOAD-TRANSIENT RESPONSE
MAX9758
= 2µF
100
vs. FREQUENCY (LDO)
5, 21
8, 18
32
1
2
3
4
6
7
DD
OUTPUT NOISE
FREQUENCY (Hz)
= IN = +5.0V, GND = PGND = CPGND = 0V, SHDN = V
20µs/div
1k
OUTL+
NAME
GAIN1
GAIN2
GAIN3
OUTL-
PGND
BEEP
PV
INL
DD
10k
MAX9756 toc43
Left-Channel Audio Input
Gain Control Input 1
Gain Control Input 2
Gain Control Input 3
Audible Alert Beep Input
Power Ground
Left-Channel Positive Speaker Output
Left-Channel Negative Speaker Output
Speaker Amplifier Power Supply. Bypass with 1µF ceramic capacitor to PGND.
Typical Operating Characteristics (continued)
100k
50V
I
25mV/div
LDO_OUT = 4.65V
20mV/div
0V
LOAD
FUNCTION
LINE-TRANSIENT RESPONSE
LDO SHUTDOWN RESPONSE
DD
, REGEN = DR = SET = GND, C
100ms/div
40µs/div
Pin Description
MAX9756 toc42
MAX9756 toc44
V
500mV/div
5.5V
4.5V
LDO_OUT
20mV/div
LDO_OUT
1V/div
REGEN
5V/div
IN
BIAS
11
=