MAX9779ETI+ Maxim Integrated Products, MAX9779ETI+ Datasheet - Page 6

• Manufacturer Part Number: MAX9779ETI+
• Description: IC AMP AUDIO PWR 2.6W AB 28TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9779ETI+

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 2.6W x 2 @ 3 Ohm; 110mW x 2 @ 16 Ohm
• Voltage - Supply: 4.5 V ~ 5.5 V
• Features: Depop, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

- OUT_-
OUT_+
OUT_+
OUT_-
0.0001
SHDN
0.001
AND
0.01
0.1
10
2.6W Stereo Audio Power Amplifier and
DirectDrive Headphone Amplifier
1
6
(Measurement BW = 22Hz to 22kHz, T
TOTAL HARMONIC DISTORTION PLUS NOISE
10
vs. FREQUENCY (HEADPHONE MODE)
_______________________________________________________________________________________
V
R
A
R
DD
L
V
L
= 16Ω
= 3dB
= 8Ω
= 3.3V
OUTPUT POWER = 10mW
TURN-OFF RESPONSE
100
(SPEAKER MODE)
OUTPUT POWER = 30mW
FREQUENCY (Hz)
20ms/div
-100
-120
-110
-10
-20
-40
-50
-60
-70
-80
-90
-30
1k
0
10
V
V
R
DD
RIPPLE
L
= 4Ω
10k
= 5V
CROSSTALK vs. FREQUENCY
MAX9779 toc12
= 200mV
LEFT TO RIGHT
100
(SPEAKER MODE)
FREQUENCY (Hz)
100k
RIGHT TO LEFT
P-P
5V/div
2V/div
20mV/div
1k
A
= +25°C, unless otherwise noted.)
0.0001
0.0001
10k
0.001
0.001
0.01
0.01
0.1
0.1
Typical Operating Characteristics (continued)
10
10
1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
10
10
vs. FREQUENCY (HEADPHONE MODE)
vs. FREQUENCY (HEADPHONE MODE)
100k
V
R
A
V
R
A
DD
L
V
DD
L
V
= 32Ω
= 16Ω
= 3dB
= 3dB
= 3.3V
= 5V
OUTPUT POWER = 30mW
OUTPUT POWER = 10mW
100
100
OUTPUT POWER = 90mW
OUTPUT POWER = 45mW
FREQUENCY (Hz)
FREQUENCY (Hz)
1k
1k
- OUT_-
OUT_+
OUT_+
OUT_-
SHDN
10k
10k
AND
R
L
100k
100k
= 8Ω
TURN-ON RESPONSE
(SPEAKER MODE)
0.0001
0.001
0.001
1000
0.01
0.01
100
0.1
0.1
20ms/div
10
10
1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
10
0
vs. FREQUENCY (HEADPHONE MODE)
V
R
A
V
R
A
DD
L
V
DD
L
V
= 16Ω
= 3dB
= 32Ω
= 3dB
= 5V
25
= 5V
OUTPUT POWER = 10mW
100
MAX9779 toc11
OUTPUT POWER (mW)
OUTPUT POWER = 45mW
50
FREQUENCY (Hz)
75
1k
5V/div
2V/div
100mV/div
100
10k
125
100k
150