MAX9776ETJ+ Maxim Integrated Products, MAX9776ETJ+ Datasheet - Page 10
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MAX9776ETJ+
Manufacturer Part Number
MAX9776ETJ+
Description
IC AMP AUDIO PWR 1.5W D 32TQFN
Manufacturer
Maxim Integrated Products
Series
DirectDrive™r
Type
Class Dr
Datasheet
1.MAX9776ETJ.pdf
(38 pages)
Specifications of MAX9776ETJ+
Output Type
1-Channel (Mono) with Stereo Headphones
Max Output Power X Channels @ Load
1.5W x 1 @ 4 Ohm; 60mW x 2 @ 16 Ohm
Voltage - Supply
2.7 V ~ 5.5 V
Features
Depop, Differential Inputs, I²C, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
Mounting Type
Surface Mount
Package / Case
32-TQFN Exposed Pad
Product
Class-D
Output Power
1.5 W
Common Mode Rejection Ratio (min)
45 dB
Thd Plus Noise
0.04 %
Operating Supply Voltage
2.7 V to 5.5 V
Supply Current
9.5 mA
Maximum Power Dissipation
1360 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Amplifier Class
D
No. Of Channels
3
Supply Voltage Range
2.7V To 5.5V
Load Impedance
4ohm
Operating Temperature Range
-40°C To +85°C
Amplifier Case Style
TQFN
Rohs Compliant
Yes
For Use With
MAX9776EVKIT+ - EVALUATION KIT FOR MAX9776
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
2 x 1.5W, Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
10
(V
INC gain = 0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). Speaker load resistors (R
between OUT_+ and OUT_-, headphone load resistors are terminated to GND, unless otherwise stated. C1 = C2 = C3 = 1µF. T
+25°C, unless otherwise noted.)
DD
-100
-110
-120
-100
-120
-140
-10
-20
-30
-40
-50
-60
-70
-80
-90
-20
-40
-60
-80
20
0
0
______________________________________________________________________________________
= PV
0.1
0
V
R
INPUTS AC GROUNDED
f
R
GAIN = +12dB
CROSSTALK vs. INPUT AMPLITUDE
IN
DD
L
L
WIDEBAND OUTPUT SPECTRUM
= 8Ω
= 1kHz
= 8Ω
DD
= 5V
0.1
FIXED-FREQUENCY MODE
= CPV
INPUT AMPLITUDE (V
1
0.2
FREQUENCY (MHz)
LEFT TO RIGHT
DD
RIGHT TO LEFT
0.3
10
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
0.4
RMS
100
)
0.5
1000
0.6
-100
-120
-140
-100
-120
-140
-20
-40
-60
-80
Typical Operating Characteristics (continued)
20
-20
-40
-60
-80
20
0
0
0.1
0
V
R
INPUTS AC GROUNDED
SSM MODE
R
V
f
UNWEIGHTED
DD
L
IN
L
DD
WIDEBAND OUTPUT SPECTRUM
= 8Ω
= 8Ω
= 1kHz
= 5V
IN-BAND OUTPUT SPECTRUM
SPREAD-SPECTRUM MODE
= 3.3V
1
5k
FREQUENCY (MHz)
FREQUENCY (Hz)
10
10k
DD
100
, I
15k
2
C default gain settings (INA gain = +20dB, INB gain =
1000
20k
-100
-120
-140
-20
-40
-60
-80
20
25
20
15
10
0
2.7
0
SP MODE
INPUTS AC GROUNDED
OUTPUTS UNLOADED
FFM MODE
R
V
f
UNWEIGHTED
IN
L
DD
= 8Ω
= 1kHz
IN-BAND OUTPUT SPECTRUM
= 3.3V
MAX9775 SUPPLY CURRENT
3.2
5k
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
3.7
LSP
10k
) are terminated
4.2
4.7
15k
5.2
A
=
20k