MAX9776EVKIT+ Maxim Integrated Products, MAX9776EVKIT+ Datasheet - Page 9

• Manufacturer Part Number: MAX9776EVKIT+
• Description: EVALUATION KIT FOR MAX9776
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r

Specifications of MAX9776EVKIT+

• Amplifier Type: Class D
• 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
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: 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
1000
2200
2000
1800
1600
1400
1200
1000
800
600
400
200
800
600
400
200
= PV
0
0
2.7
1
V
f = 1kHz
R
f = 1kHz
DD
DD
L
= 4Ω
= 3.3V
3.2
THD+N = 1%
= CPV
2 x 1.5W, Stereo Class D Audio Subsystem
vs. SUPPLY VOLTAGE
THD+N = 10%
SUPPLY VOLTAGE (V)
OUTPUT POWER
OUTPUT POWER
3.7
DD
vs. LOAD
_______________________________________________________________________________________
LOAD (Ω)
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
10
THD+N = 10%
THD+N = 1%
4.2
with DirectDrive Headphone Amplifier
4.7
5.2
100
1600
1400
1200
1000
-100
800
600
400
200
Typical Operating Characteristics (continued)
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
2.7
10
R
f = 1kHz
V
V
R
POWER-SUPPLY REJECTION RATIO
L
DD
IN
L
= 8Ω
= 8Ω
= 100mV
= 3.3V
3.2
100
THD+N = 10%
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
P-P
OUTPUT POWER
vs. FREQUENCY
3.7
FREQUENCY (Hz)
1k
4.2
THD+N = 1%
DD
OUTR
OUTL
4.7
, I
10k
2
C default gain settings (INA gain = +20dB, INB gain =
5.2
100k
-100
-110
-120
2.5
2.0
1.5
1.0
0.5
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
10
1
V
f = 1kHz
OUT_ = 1V
R
DD
L
= 8Ω
= 5V
THD+N = 1%
CROSSTALK vs. FREQUENCY
100
LEFT TO RIGHT
P-P
OUTPUT POWER
FREQUENCY (Hz)
RIGHT TO LEFT
vs. LOAD
LOAD (Ω)
LSP
THD+N = 10%
10
1k
) are terminated
10k
A
=
100k
100
9