MAX9770ETI+ Maxim Integrated Products, MAX9770ETI+ Datasheet - Page 19

• Manufacturer Part Number: MAX9770ETI+
• Description: IC AMP AUDIO 1.2W MONO D 28TQFN
• Manufacturer: Maxim Integrated Products
• Type: Class Dr

Specifications of MAX9770ETI+

• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.2W x 1 @ 8 Ohm; 80mW x 2 @ 16 Ohm
• Voltage - Supply: 2.5 V ~ 5.5 V
• Features: Depop, Input Multiplexer, Mute, 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

1.2W, Low-EMI, Filterless, Mono Class D Amplifier
RIGHT-CHANNEL
RIGHT-CHANNEL
LEFT-CHANNEL
LEFT-CHANNEL
AUDIO INPUT 2
AUDIO INPUT 2
AUDIO INPUT 1
AUDIO INPUT 1
with Stereo DirectDrive Headphone Amplifiers
AUDIO INPUT
MONO
V
______________________________________________________________________________________
DD
1μF
0.47μF
0.47μF
0.47μF
0.47μF
V
1μF
( ) FOR TSSOP PIN.
C
C
HPS
GND
GND
C
C
C
V
V
V
DD
1μF
IN
IN
IN
IN
IN
DD
DD
DD
C1
CPGND
MONO
CPV
GAIN2
GAIN1
SHDN
SYNC
SELM
IN1R
IN2R
SEL1
SEL2
IN2L
IN1L
C1P
C1N
DD
28
(3)
24
(27)
21
(24)
22
(25)
14
(17)
12
(15)
13
(16)
15
(18)
7
(10)
10
(13)
11
(14)
16
(19)
25
(28)
23
(26)
27
(2)
9
(12)
GAIN CONTROL
CPV
HEADPHONE
SHUTDOWN
OSCILLATOR
DETECTION
MUX/GAIN
CONTROL
CONTROL
MUX AND
(11)
MIXER/
CHARGE
PUMP
SS
8
(8)
5
C2
1μF
SV
SS
OSC/2
1μF
MODULATOR
CLASS D
2.5V TO 5.5V
MAX9770
(5)
(1)
26
2
V
GND
DD
V
DD
H-BRIDGE
(23)
(21)
(22)
(20) PGND
(4) BIAS
(9)
(7)
(6)
20
18
19
17
1
6
4
3
PV
OUT+
OUT-
HPS
HPOUTL
HPOUTR
DD
Block Diagram
0.1μF
C
0.047μF
BIAS
2.5V TO 5.5V
19