MAX9724BETC+ Maxim Integrated Products, MAX9724BETC+ Datasheet - Page 4

• 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

60mW, DirectDrive, Stereo Headphone Amplifier
with Low RF Susceptibility and Shutdown
(V
THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, T
4
0.001
0.001
0.001
DD
0.01
0.01
0.01
100
100
0.1
0.1
0.1
10
10
10
_______________________________________________________________________________________
1
1
1
= 5V, PGND = SGND = 0V, SHDN = V
0
0
0
TOTAL HARMONIC DISTORTION PLUS
TOTAL HARMONIC DISTORTION PLUS
TOTAL HARMONIC DISTORTION PLUS
V
R
V
R
V
R
NOISE vs. OUTPUT POWER (TQFN)
NOISE vs. OUTPUT POWER (USCP)
DD
L
f
NOISE vs. OUTPUT POWER (TQFN)
DD
L
DD
L
IN
f
= 32Ω
= 32Ω
= 16Ω
IN
5
= 1kHz
= 3V
= 5V
= 3V
20
= 1kHz
f
IN
10
10
= 1kHz
OUTPUT POWER (mW)
OUTPUT POWER (mW)
OUTPUT POWER (mW)
f
40
IN
15
= 20Hz
f
IN
= 20Hz
20
f
60
IN
20
= 20Hz
25
80
f
IN
f
f
IN
IN
= 10kHz
30
30
= 10kHz
= 10kHz
100
35
120
40
40
DD
, C1 = C2 = 1µF, R
0.001
0.001
0.001
0.01
0.01
0.01
100
0.1
0.1
0.1
10
10
10
1
1
1
0
0
0
TOTAL HARMONIC DISTORTION PLUS
TOTAL HARMONIC DISTORTION PLUS
TOTAL HARMONIC DISTORTION PLUS
V
R
V
R
V
R
NOISE vs. OUTPUT POWER (UCSP)
DD
L
NOISE vs. OUTPUT POWER (UCSP)
DD
L
DD
L
NOISE vs. OUTPUT POWER (TQFN)
f
f
f
= 16Ω
IN
= 32Ω
= 16Ω
IN
IN
= 5V
= 5V
= 3V
= 1kHz
= 1kHz
5
= 20Hz
20
25
OUTPUT POWER (mW)
OUTPUT POWER (mW)
OUTPUT POWER (mW)
f
10
IN
f
= 1kHz
40
IN
L
= 20Hz
f
= ∞, gain = -1.5V/V (R
IN
15
50
= 20Hz
60
Typical Operating Characteristics
f
f
IN
IN
20
= 10kHz
= 10kHz
f
IN
= 10kHz
75
80
25
A
100
100
30
= +25°C, unless otherwise noted.)
IN
0.001
= 20kΩ, R
0.001
0.001
0.01
0.01
100
0.01
0.1
0.1
10
0.1
10
1
1
1
10
0
0
TOTAL HARMONIC DISTORTION PLUS
TOTAL HARMONIC DISTORTION PLUS
V
R
TOTAL HARMONIC DISTORTION PLUS
V
R
V
R
DD
L
NOISE vs. OUTPUT POWER (TQFN)
DD
L
NOISE vs. OUTPUT POWER (UCSP)
DD
L
= 32Ω
P
= 16Ω
= 16Ω
NOISE vs. FREQUENCY (TQFN)
10
OUT
= 3V
= 3V
f
f
= 5V
IN
F
IN
P
10
f
IN
= 1kHz
OUT
= 30kΩ for the MAX9724A),
= 1kHz
= 5mW
f
100
= 20Hz
IN
20
OUTPUT POWER (mW)
= 10mW
= 20Hz
OUTPUT POWER (mW)
FREQUENCY (Hz)
20
30
1k
40
30
f
IN
f
IN
50
= 10kHz
= 10kHz
10k
60
40
70
100k
50
80