MAX9724BETC+ Maxim Integrated Products, MAX9724BETC+ Datasheet - Page 7

• Manufacturer Part Number: MAX9724BETC+
• Description: IC AMP AUDIO .045W STER 12TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9724BETC+

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 63mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 12-TQFN Exposed Pad
• Product: General Purpose Audio Amplifiers
• Output Power: 42 mW
• Thd Plus Noise: 0.02 %
• Supply Current: 3.5 mA
• Maximum Power Dissipation: 1333 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 16 Ohms
• Minimum Operating Temperature: - 40 C
• Amplifier Class: AB
• No. Of Channels: 2
• Supply Voltage Range: 2.7V To 5.5V
• Load Impedance: 16ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: TQFN
• Rohs Compliant: Yes
• For Use With: MAX9724AEVKIT+ - EVALUATION KIT FOR MAX9724A/BMAX9724DEVKIT+ - KIT EVAL FOR MAX9724D
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(V
THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, T
DD
60mW, DirectDrive, Stereo Headphone Amplifier
= 5V, PGND = SGND = 0V, SHDN = V
-100
-120
-20
-40
-60
-80
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
80
70
60
50
40
30
20
10
0
0
OUTPUT POWER vs. LOAD RESISTANCE AND
with Low RF Susceptibility and Shutdown
2.5
_______________________________________________________________________________________
SUPPLY CURRENT vs. SUPPLY VOLTAGE
10
CHARGE-PUMP CAPACITOR SIZE (UCSP)
0
C1 = C2 = 2.2μF
P
R
OUT
L
= 16Ω
3.0
CROSSTALK vs. FREQUENCY
= 15mW
100
C1 = C2 = 1μF
LOAD RESISTANCE (Ω)
SUPPLY VOLTAGE (V)
3.5
RIGHT TO LEFT
50
FREQUENCY (Hz)
C1 = C2 = 0.47μF
4.0
1k
100
4.5
LEFT TO RIGHT
DD
V
f
THD+N = 1%
IN
10k
NO LOAD
INPUTS
GROUND
DD
, C1 = C2 = 1µF, R
= 1kHz
= 5V
5.0
Typical Operating Characteristics (continued)
100k
5.5
150
L
= ∞, gain = -1.5V/V (R
-100
-110
-120
-130
-140
-40
-50
-60
-70
-80
-90
140
120
100
80
70
60
50
40
30
20
80
60
40
20
OUTPUT POWER vs. LOAD RESISTANCE AND
0
2.5
CHARGE-PUMP CAPACITOR SIZE (TQFN)
0
0
OUTPUT SPECTRUM vs. FREQUENCY
NO LOAD INPUTS GND
A
C1 = C2 = 2.2μF
vs. SUPPLY VOLTAGE (TQFN)
3.0
= +25°C, unless otherwise noted.)
SHUTDOWN CURRENT
5
LOAD RESISTANCE (Ω)
SUPPLY VOLTAGE (V)
IN
50
3.5
FREQUENCY (kHz)
= 20kΩ, R
C1 = C2 = 0.47μF
10
4.0
C1 = C2 = 1μF
100
4.5
R
V
f
V
IN
L
DD
OUT
F
V
f
THD+N = 1%
IN
= 32Ω
= 1kHz
DD
15
= 30kΩ for the MAX9724A),
= 3V
= 1kHz
= -60dBV
= 5V
5.0
150
5.5
20
7