MAX9770ETI+ Maxim Integrated Products, MAX9770ETI+ Datasheet - Page 6

• 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
with Stereo DirectDrive Headphone Amplifiers
(V
noted.)
6
DD
-100
-120
-140
0.8
1.0
0.6
0.4
0.2
-20
-40
-60
-80
100
0
_______________________________________________________________________________________
90
80
70
60
50
40
30
20
10
0
0
= 3.3V, BW = 22Hz to 22kHz, GAIN1 = 1, GAIN2 = 0, spread-spectrum mode, headphone outputs in phase, unless otherwise
vs. LOAD RESISTANCE (SPEAKER MODE)
0
1
0
f = 1kHz
EFFICIENCY vs. OUTPUT POWER
R
0.2
L
THD+N = 1%
5
= 8Ω
OUTPUT SPECTRUM
LOAD RESISTANCE (Ω)
(SPEAKER MODE)
OUTPUT POWER
OUTPUT POWER (W)
FREQUENCY (kHz)
0.4
R
10
10
L
THD+N = 10%
= 4Ω
0.6
R
f = 1kHz
SSM MODE
V
L
IN
15
= 8Ω
f = 1kHz
= -60dBV
0.8
100
20
1.0
-100
-120
-160
-140
Typical Operating Characteristics (continued)
-20
-40
-60
-80
2.0
1.5
1.0
0.5
-10
-20
-30
-40
-50
-60
-70
-80
0
0
0
2.5
10
0
vs. SUPPLY VOLTAGE (SPEAKER MODE)
POWER-SUPPLY REJECTION RATIO
f = 1kHz
R
vs. FREQUENCY (SPEAKER MODE)
V
R
L
RIPPLE
L
= 8Ω
= 8Ω
3.0
100
= 200mV
5
OUTPUT SPECTRUM
(SPEAKER MODE)
SUPPLY VOLTAGE (V)
OUTPUT POWER
3.5
FREQUENCY (kHz)
FREQUENCY (Hz)
THD+N = 10%
P-P
THD+N = 1%
10
4.0
1k
4.5
R
f = 1kHz
SSM MODE
A-WEIGHTED
V
L
IN
10k
15
= 8Ω
= -60dBV
5.0
100k
20
5.5
-100
-120
-140
100
-20
-40
-60
-80
-10
-20
-30
-40
-50
-60
90
80
70
60
50
40
30
20
10
40
30
20
10
0
0
0
1M
0
0
EFFICIENCY vs. OUTPUT POWER
WIDEBAND OUTPUT SPECTRUM
0.2
5
OUTPUT SPECTRUM
0.4
(SPEAKER MODE)
(SPEAKER MODE)
OUTPUT POWER (W)
10M
FREQUENCY (kHz)
FREQUENCY (Hz)
0.6
10
0.8
1.0
R
f = 1kHz
FFM MODE
V
FFM MODE
RBW = 10kHz
L
IN
15
V
f = 1kHz
R
100M
= 8Ω
= -60dBV
DD
L
= 8Ω
1.2
= 5V
1.4
20