MAX9725AETC+T Maxim Integrated Products, MAX9725AETC+T Datasheet - Page 6

• Manufacturer Part Number: MAX9725AETC+T
• Description: IC AMP AUDIO .025W STER 12TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9725AETC+T

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 25mW x 2 @ 16 Ohm
• Voltage - Supply: 900 mV ~ 1.8 V
• Features: Depop, Short-Circuit Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 12-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1V, Low-Power, DirectDrive, Stereo Headphone
Amplifier with Shutdown
(V
to 22kHz, T
6
DD
80
70
60
50
40
30
20
10
40
35
30
25
20
15
10
50
45
40
35
30
25
20
15
10
_______________________________________________________________________________________
0
5
0
5
0
= 1.5V, V
0.9
10
0
CAPACITANCE AND LOAD RESISTANCE
C1 = C2 = 0.47μF
f
R
BOTH INPUTS
DRIVEN IN-PHASE
OUTPUT POWER vs. CHARGE-PUMP
IN
L
= 1kHz
= 32Ω
A
10
= +25°C, unless otherwise noted.) (See the Functional Diagrams. )
20
vs. SUPPLY VOLTAGE
POWER DISSIPATION
PGND
R
vs. OUTPUT POWER
R
LOAD RESISTANCE (Ω)
L
OUTPUT POWER (mW)
L
SUPPLY VOLTAGE (V)
C1 = C2 = 0.68μF
OUTPUT POWER
C1 = C2 = 2.2μF
= 16Ω
1.1
= 32Ω
20
= V
THD+N = 10%
THD+N = 1%
30
SGND
C1 = C2 = 1μF
V
f
P
OUTPUTS IN-PHASE
IN
DD
OUT
30
= 1kHz
= 1.5V
1.3
= P
= 0V, V
V
f
THD+N = 1%
OUTL
40
IN
DD
40
= 1kHz
= 1.5V
+ P
OUTR
SHDN
50
50
1.5
= 1.5V, V
-100
-120
-140
-160
80
70
60
50
40
30
20
10
-20
-40
-60
-80
35
30
25
20
15
10
0
Typical Operating Characteristics (continued)
5
0
0
10
0
0
SS
THD+N = 10%
= V
PVSS,
vs. LOAD RESISTANCE
R
POWER DISSIPATION
5
5
OUTPUT SPECTRUM
vs. OUTPUT POWER
R
L
THD+N = 1%
LOAD RESISTANCE (Ω)
L
OUTPUT POWER (mW)
= 16Ω
OUTPUT POWER
vs. FREQUENCY
= 32Ω
FREQUENCY (kHz)
C1 = C2 = 1µF, C
100
10
10
V
f
P
OUTPUTS IN-PHASE
IN
DD
OUT
V
f
BOTH INPUTS
DRIVEN IN-PHASE
= 1kHz
IN
DD
= 1V
= P
= 1kHz
f
R
V
V
IN
= 1.5V
L
OUT
DD
OUTL
15
15
= 1kHz
= 32Ω
= 1.5V
= -60dBV
+ P
OUTR
IN
1k
20
20
= 1µF, THD+N measurement bandwidth = 22Hz
80
70
60
50
40
30
20
10
-10
0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
-1
-2
-3
-4
-5
-6
-7
-8
-9
2
1
0
0
10
10
0.9
V
f
BOTH INPUTS
DRIVEN IN-PHASE
THD+N = 10%
IN
NO LOAD
DD
= 1kHz
= 1V
1.0
THD+N = 1%
100
vs. LOAD RESISTANCE
vs. SUPPLY VOLTAGE
LOAD RESISTANCE (Ω)
SUPPLY CURRENT
OUTPUT POWER
vs. FREQUENCY
SUPPLY VOLTAGE (V)
GAIN FLATNESS
1.1
FREQUENCY (Hz)
100
1k
1.2
1.3
10k
1.4
100k
1k
1.5