MAX9728AETC+ Maxim Integrated Products, MAX9728AETC+ Datasheet - Page 5

• Manufacturer Part Number: MAX9728AETC+
• Description: IC AMP AUDIO .06W STER AB 12TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9728AETC+

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 60mW x 2 @ 32 Ohm
• Voltage - Supply: 4.5 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: 60 mW
• Thd Plus Noise: 0.02 %
• Operating Supply Voltage: 4.5 V to 5.5 V
• Supply Current: 3.5 mA
• Maximum Power Dissipation: 1177 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Amplifier Class: AB
• No. Of Channels: 2
• Supply Voltage Range: 4.5V To 5.5V
• Load Impedance: 32ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: TQFN
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(V
THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, T
DD
100
90
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
0
= 5V, PGND = SGND = 0V, SHDN = V
10
0
OUTPUT POWER vs. LOAD RESISTANCE
AND CHARGE-PUMP CAPACITOR SIZE
C1 = C2 = 2.2μF
V
f
IN
DD
= 1kHz
50
C1 = C2 = 0.47μF
= 5V
vs. LOAD RESISTANCE
LOAD RESISTANCE (Ω)
LOAD RESISTANCE (Ω)
OUTPUT POWER
100
C1 = C2 = 1μF
_______________________________________________________________________________________
THD+N = 1%
150
100
60mW, DirectDrive, Stereo Headphone
THD+N = 10%
200
V
f
THD+N = 1%
IN
DD
= 1kHz
= 5V
250
1000
300
DD
, C1 = C2 = 1µF, R
-100
-120
-20
-40
-60
-80
3.45
3.40
3.35
3.30
3.50
3.25
3.20
Typical Operating Characteristics (continued)
0
4.5
10
R
V
L
DD
= 32Ω
= 5V
POWER-SUPPLY REJECTION
RATIO vs. FREQUENCY
100
vs. SUPPLY VOLTAGE
SUPPLY CURRENT
Amplifiers with Shutdown
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
L
NO LOAD INPUTS GROUND
= ∞, gain = -1.5V/V (R
1k
5.0
10k
A
100k
5.5
= +25°C, unless otherwise noted.)
IN
= 20kΩ, R
-100
-120
-20
-40
-60
-80
0
10
9
8
7
6
5
4
3
2
1
0
10
4.5
P
R
OUT
L
= 16Ω
F
CROSSTALK vs. FREQUENCY
= 15mW
= 30kΩ for the MAX9728A),
100
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
LEFT TO RIGHT
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
NO LOAD INPUTS GROUND
1k
5.0
RIGHT TO LEFT
10k
100k
5.5
5