MAX9776ETJ+T Maxim Integrated Products, MAX9776ETJ+T Datasheet - Page 13

• Manufacturer Part Number: MAX9776ETJ+T
• Description: IC AMP AUDIO PWR 1.5W D 32TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class Dr

Specifications of MAX9776ETJ+T

• 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
• For Use With: MAX9776EVKIT+ - EVALUATION KIT FOR MAX9776
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(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
200
180
160
140
120
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
80
60
40
20
0
= PV
0
10
10
V
V
R
POWER-SUPPLY REJECTION RATIO
DD
IN
L
DD
= 32Ω
THD+N = 1%
= 100mV
= 3.3V
HPR
= CPV
100
2 x 1.5W, Stereo Class D Audio Subsystem
P-P
OUTPUT POWER
vs. FREQUENCY
THD+N = 10%
FREQUENCY (Hz)
DD
vs. LOAD
______________________________________________________________________________________
LOAD (Ω)
100
1k
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
with DirectDrive Headphone Amplifier
10k
V
f = 1kHz
HPL
DD
= 5V
100k
1000
-100
-120
-140
Typical Operating Characteristics (continued)
200
180
160
140
120
100
-20
-40
-60
-80
80
60
40
20
20
0
0
10
0
V
f = 1kHz
THD+N = 1%
V
f = 1kHz
R
DD
OUTPUT FREQUENCY SPECTRUM
DD
L
= 32Ω
= 3.3V
= 3.3V
5k
OUTPUT POWER
THD+N = 10%
FREQUENCY (Hz)
vs. LOAD
LOAD (Ω)
100
10k
DD
, I
15k
2
C default gain settings (INA gain = +20dB, INB gain =
1000
20k
-100
-110
-120
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
80
60
40
20
0
0
10
10
OUTPUT POWER vs. LOAD RESISTANCE
AND CHARGE-PUMP CAPACITOR SIZE
V
f = 1kHz
THD+N = 1%
OUT_ = 1V
R
C1 = C2 = 0.68μF
DD
L
= 32Ω
= 3.3V
CROSSTALK vs. FREQUENCY
LEFT TO RIGHT
100
C1 = C2 = 2.2μF
P-P
RIGHT TO LEFT
FREQUENCY (Hz)
LOAD (Ω)
LSP
C1 = C2 = 1μF
100
1k
) are terminated
10k
A
1000
100k
=
13