MAX9778ETI+ Maxim Integrated Products, MAX9778ETI+ Datasheet - Page 24

• Manufacturer Part Number: MAX9778ETI+
• Description: IC AMP AUDIO PWR 2.6W AB 28TQFN
• Manufacturer: Maxim Integrated Products
• Type: Class ABr

Specifications of MAX9778ETI+

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 2.6W x 2 @ 4 Ohm; 200mW x 2 @ 16 Ohm
• Voltage - Supply: 4.5 V ~ 5.5 V
• Features: Depop, Input Multiplexer, Mute, Shutdown, Thermal Protection,
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
24
µCONTROLLER
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
TO
10kΩ
AUDIO
AUDIO
AUDIO
AUDIO
INPUT
INPUT
INPUT
INPUT
1kΩ
4.5V TO 5.5V
0.68
0.68
0.68
0.68
µ
µ
µ
µ
F
F
F
F
1kΩ
15kΩ
15kΩ
15kΩ
15kΩ
1
µ
F
19
17
20
14
28
15
6
2
5
1
INL1
INL2
INR1
INR2
BIAS
IN1/2
MUTE
GAINA/B
HPS_EN
SHDN
100
MAX9778
µ
F
INPUT
INPUT
MUX
MUX
BIAS
2:1
2:1
LOGIC
11, 25
4.5V TO 5.5V
PV
DD
18
3, 4
GND
V
DD
10k
10k
Ω
10k
Ω
10k
Ω
Ω
0.1
10k
10k
µ
F
PGND
Ω
Ω
Functional Diagrams (continued)
10k
10k
9, 13, 23, 27
GAIN
GAIN
MUX
MUX
SET
SET
Ω
Ω
HPS
GAINRB
GAINRA
GAINLB
GAINLA
OUTL+
OUTR+
OUTR-
OUTL-
HPS
8
7
10
12
22
21
24
26
16
15k
15k
Ω
Ω
33.2k
33.2k
Ω
Ω
27.4k
27.4k
0.047µF
0.047µF
220µF
220µF
Ω
Ω
10k
10k
Ω
Ω