MAX9726BETP+T Maxim Integrated Products, MAX9726BETP+T Datasheet - Page 8

• Manufacturer Part Number: MAX9726BETP+T
• Description: IC AMP AUDIO .124W STER 20TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9726BETP+T

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 124mW x 2 @ 16 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Bass Boost, Depop, I²C, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 20-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

200mV/div
DirectDrive, Headphone Amplifier with
BassMax, I
(V
ume (overall gain = 0dB), BassMax disabled. Load connected between OUT_ and PGND where specified. Outputs in phase, both
channels loaded. T
8
DD
V
5V/div
2V/div
V
SHDN
OUT_
V
_______________________________________________________________________________________
90
85
80
75
70
65
60
IN_
= SHDN = 5V, PGND = SGND = 0V, C1 = C2 = 1µF, C
10
CAPACITANCE AND LOAD RESISTANCE
C1 = C2 = 2.2μF
OUTPUT POWER vs. CHARGE-PUMP
V
THD+N = 1%
f
DD
IN
15
= 1kHz
= 3.3V
C1 = C2 = 0.68μF
ENTERING SHUTDOWN
20
LOAD RESISTANCE (Ω)
A
25
= +25°C, unless otherwise noted.) (See the Functional Diagram/Typical Operating Circuit )
20μs/div
30
C1 = C2 = 1μF
35
2
40
C, Volume and Gain Control
MAX9726 toc25
45
50
10mV/div
2V/div
V
Typical Operating Characteristics (continued)
OUT_
V
5.6
5.5
5.4
5.3
5.2
5.1
5.0
4.9
4.8
DD
2
NO LOAD
INPUTS AC GROUNDED
POWER-UP/POWER-DOWN
PREG
vs. SUPPLY VOLTAGE
3
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
= C
20ms/div
4
NREG
= 1µF, BM_ = 0V, R
5
R
L
MAX9726 toc23
= 32Ω
6
200mV/div
V
5V/div
2V/div
V
SHDN
OUT_
V
10
IN
IN_
9
8
7
6
5
4
= 10kΩ, R
2
NO LOAD
INPUTS AC GROUNDED
vs. SUPPLY VOLTAGE
SHUTDOWN CURRENT
3
EXITING SHUTDOWN
SUPPLY VOLTAGE (V)
F
= 10kΩ, maximum vol-
100μs/div
4
5
MAX9726 toc24
6