MAX9724BETC+ Maxim Integrated Products, MAX9724BETC+ Datasheet - Page 6

• 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
6
DD
120
100
250
200
150
100
80
60
40
20
50
_______________________________________________________________________________________
35
30
25
20
15
10
0
0
5
0
= 5V, PGND = SGND = 0V, SHDN = V
2.5
10
0
THD+N = 10%
f
R
IN
L
= 1kHz
= 32Ω
R
vs. SUPPLY VOLTAGE (TQFN)
vs. LOAD RESISTANCE (UCSP)
3.0
L
vs. OUTPUT POWER (TQFN)
= 16Ω
10% THD+N
THD+N = 1%
POWER DISSIPATION
20
OUTPUT POWER
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
3.5
OUTPUT POWER
1% THD+N
4.0
100
40
V
f
P
OUTPUTS IN PHASE
IN
DD
OUT
= 1kHz
R
= 3V
L
4.5
= P
= 32Ω
OUTL
60
V
f
5.0
IN
+ P
DD
= 1kHz
OUTR
= 3V
1000
5.5
80
DD
, C1 = C2 = 1µF, R
160
140
120
100
120
100
Typical Operating Characteristics (continued)
100
80
60
40
20
80
60
40
20
90
80
70
60
50
40
30
20
10
0
0
0
2.5
10
0
f
R
IN
V
f
L
IN
5
DD
= 1kHz
= 32Ω
vs. SUPPLY VOLTAGE (UCSP)
= 1kHz
R
vs. LOAD RESISTANCE (TQFN)
3.0
vs. OUTPUT POWER (UCSP)
= 5V
L
10 15 20 25 30
= 16Ω
THD+N = 10%
POWER DISSIPATION
10% THD+N
OUTPUT POWER (mW)
OUTPUT POWER
SUPPLY VOLTAGE (V)
LOAD RESISTANCE (Ω)
3.5
OUTPUT POWER
THD+N = 1%
L
= ∞, gain = -1.5V/V (R
4.0
1% THD+N
V
f
P
OUTPUTS IN PHASE
IN
R
DD
OUT
L
= 1kHz
= 32Ω
= 3V
= P
4.5
35
OUTL
40 45
5.0
+ P
OUTR
A
100
5.5
50
= +25°C, unless otherwise noted.)
IN
= 20kΩ, R
-100
-120
100
-20
-40
-60
-80
35
30
25
20
15
10
90
80
70
60
50
40
30
20
10
5
0
0
0
10
10
10
10% THD+N
R
V
f
POWER-SUPPLY REJECTION RATIO
IN
L
DD
= 32Ω
F
= 1kHz
vs. LOAD RESISTANCE (TQFN)
vs. LOAD RESISTANCE (UCSP)
V
= 5V
DD
= 30kΩ for the MAX9724A),
THD+N = 10%
= 5V
100
LOAD RESISTANCE (Ω)
LOAD RESISTANCE (Ω)
OUTPUT POWER
1% THD+N
OUTPUT POWER
vs. FREQUENCY
FREQUENCY (Hz)
V
DD
THD+N = 1%
= 3V
100
1k
10k
V
f
IN
DD
= 1kHz
= 3V
1000
100
100k