MAX4409ETP+ Maxim Integrated Products, MAX4409ETP+ Datasheet - Page 7

• Manufacturer Part Number: MAX4409ETP+
• Description: IC AMP AUDIO .08W STER AB 20TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX4409ETP+

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 80mW x 2 @ 16 Ohm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Features: Depop, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 20-TQFN Exposed Pad
• Product: General Purpose Audio Amplifiers
• Output Power: 80 mW
• Common Mode Rejection Ratio (min): 96 dB
• Thd Plus Noise: 0.002 %
• Operating Supply Voltage: 1.8 V to 3.6 V
• Supply Current: 5 mA
• Maximum Power Dissipation: 2051 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Input Bias Current (max): 0 nA
• Input Offset Voltage: 0.5 mV
• Input Signal Type: Differential
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.8 V
• Amplifier Class: AB
• No. Of Channels: 2
• Supply Voltage Range: 1.8V To 3.6V
• Load Impedance: 16ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: TQFN
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(
C1 = C2 = 2.2µF, R
400
350
300
250
200
150
100
50
70
60
50
40
30
20
10
10
0
0
8
6
4
2
0
1.8
0
0
CHARGE-PUMP OUTPUT RESISTANCE
f
R
V
P
IN
V
I
NO LOAD
L
DD
OUT
PVSS
f
R
V
P
IN_
= 1kHz
= 16Ω
IN
L
DD
OUT
= 3V
IN PHASE
10
2.1
= P
= 1kHz
= 32Ω
INPUTS
= GND
40
= 1.8V
= 10mA
= P
OUTL
vs. SUPPLY VOLTAGE
POWER DISSIPATION
POWER DISSIPATION
vs. OUTPUT POWER
vs. OUTPUT POWER
OUTL
OUTPUT POWER (mW)
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
2.4
20
+ P
IN
+ P
80
OUTR
_______________________________________________________________________________________
= R
OUTR
2.7
30
F
80mW, DirectDrive, Stereo Headphone
120
= R1 = R2 = 10kΩ, THD+N measurement bandwidth = 22Hz to 22kHz, T
OUT OF PHASE
OUT OF PHASE
INPUTS 180°
3.0
40
INPUTS 180°
IN PHASE
INPUTS
Amplifier with Common-Mode Sense
160
50
3.3
200
3.6
60
-100
-120
-140
-160
-180
Typical Operating Characteristics (continued)
-20
-40
-60
-80
180
160
140
120
100
80
60
40
20
80
60
40
20
90
80
70
60
50
40
30
20
10
0
0
0
10
100
0
CAPACITANCE AND LOAD RESISTANCE
OUTPUT POWER vs. CHARGE-PUMP
C1 = C2 = 0.68μF
V
A
R
C1 = C2 = 2.2μF
IN PHASE
GAIN AND PHASE vs. FREQUENCY
f
R
V
P
DD
V
L
INPUTS
IN
L
DD
OUT
= 1000V/V
= 16Ω
C1 = C2 = 0.47μF
= 1kHz
= 32Ω
= 3V
1k
= 3V
40
= P
20
POWER DISSIPATION
vs. OUTPUT POWER
OUTL
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
FREQUENCY (Hz)
+ P
10k
80
OUTR
30
OUT OF PHASE
INPUTS 180°
100k
120
C1 = C2 = 1μF
PHASE
INPUTS IN PHASE
GAIN
THD+N = 1%
40
f
160
IN
1M
= 1kHz
10M
200
50
-100
-120
-10
-20
-30
-40
-50
140
120
100
10
-20
-40
-60
-80
80
60
40
20
0
0
0
A
100
10
0
= +25°C, unless otherwise noted.
OUTPUT SPECTRUM vs. FREQUENCY
f
R
V
P
IN
V
A
R
L
DD
OUT
GAIN FLATNESS vs. FREQUENCY
DD
V
L
= 1kHz
= 16Ω
= -1V/V
= 16Ω
= 1.8V
10
100
= 3V
= P
OUTL
POWER DISSIPATION
vs. OUTPUT POWER
OUTPUT POWER (mW)
1k
20
1k
+ P
FREQUENCY (Hz)
FREQUENCY (Hz)
OUTR
10k
30
100k
10k
40
OUT OF PHASE
INPUTS 180°
V
f
R
A
IN
IN PHASE
IN
L
V
INPUTS
= 1kHz
= 32Ω
= -1V/V
= 1V
1M
50
P-P
10M
100k
)
60
7