MAX9729ETI+T Maxim Integrated Products, MAX9729ETI+T Datasheet - Page 7

• Manufacturer Part Number: MAX9729ETI+T
• Description: IC AMP AUDIO .052W STER 28TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9729ETI+T

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 52mW x 2 @ 32 Ohm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Features: Bass Boost, Depop, I²C, Input Multiplexer, Short-Circuit and Thermal Protection, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(V
BM_ = 0V, maximum gain setting = 3.5dB, volume attenuation setting = 0dB (total voltage gain = 3.5dB), BassMax disabled. Load
connected between OUT_ and PGND where specified. THD+N measurement BW = 22Hz to 22kHz. Both channels loaded and driven
in phase. T
DD
-100
-120
250
200
150
100
120
100
-20
-40
-60
-80
50
80
60
40
20
= PV
0
0
0
1.8
10
0
f
R
V
f
P
V
SUPPLY RIPPLE 100mV
R
IN
IN
L
DD
OUT
POWER-SUPPLY REJECTION RATIO
DD
L
DD
2.0
= 1kHz
= 1kHz
= 16Ω
A
= 32Ω
Stereo Headphone Amplifier with BassMax,
= 2.4V
= 2.4V
= P
20
= +25°C, unless otherwise noted.)
= SHDN = 3V, PGND = SGND = 0V, C1 = C2 = C3 = 1µF, C
THD+N = 10%
2.2 2.4 2.6
OUTL
vs. SUPPLY VOLTAGE
100
POWER DISSIPATION
vs. OUTPUT POWER
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. FREQUENCY
+ P
40
FREQUENCY (Hz)
OUTR
_______________________________________________________________________________________
THD+N = 1%
60
1k
R
R
P-P
HPR
HPL
L
L
2.8 3.0
= 16Ω
= 32Ω
80
10k
3.2
100
3.4
120
100k
3.6
Volume Control, and Input Mux
-100
-120
120
100
Typical Operating Characteristics (continued)
-20
-40
-60
-80
90
80
70
60
50
40
30
20
10
80
60
40
20
0
0
0
1.8
10
10
f
R
GAIN = 3.5dB
V
R
IN
L
OUT
L
2.0
= 1kHz
= 32Ω
= 32Ω
CROSSTALK vs. FREQUENCY
= 1V
THD+N = 10%
2.2 2.4 2.6
vs. LOAD RESISTANCE
100
vs. SUPPLY VOLTAGE
P-P
LOAD RESISTANCE (Ω)
SUPPLY VOLTAGE (V)
OUTPUT POWER
OUTPUT POWER
THD+N = 1%
FREQUENCY (Hz)
THD+N = 1%
100
R TO L
L TO R
1k
THD+N = 10%
2.8 3.0
IN
= 1µF (1206 case size, X7R dielectric ceramic capacitor),
10k
3.2
V
f
IN
DD
= 1kHz
3.4
= 3V
1000
100k
3.6
-100
-120
-100
-120
-20
-40
-60
-80
50
45
40
35
30
25
20
15
10
-20
-40
-60
-80
0
5
0
0
10
10
10
GAIN = 19.5dB
V
R
V
SUPPLY RIPPLE 100mV
R
POWER-SUPPLY REJECTION RATIO
OUT
L
DD
L
= 32Ω
= 32Ω
CROSSTALK vs. FREQUENCY
= 3V
= 1V
vs. LOAD RESISTANCE
100
100
P-P
LOAD RESISTANCE (Ω)
OUTPUT POWER
vs. FREQUENCY
FREQUENCY (Hz)
FREQUENCY (Hz)
THD+N = 1%
100
1k
1k
HPR
HPL
P-P
THD+N = 10%
10k
10k
L TO R
R TO L
V
f
IN
DD
= 1kHz
= 2.4V
1000
100k
100k
7