MAX9770ETI+ Maxim Integrated Products, MAX9770ETI+ Datasheet - Page 8

• 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.)
8
0.001
0.001
DD
0.01
0.01
100
100
0.1
0.1
100
10
10
_______________________________________________________________________________________
90
80
70
60
50
40
30
20
10
1
1
0
= 3.3V, BW = 22Hz to 22kHz, GAIN1 = 1, GAIN2 = 0, spread-spectrum mode, headphone outputs in phase, unless otherwise
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. SUPPLY VOLTAGE (HEADPHONE MODE)
vs. OUTPUT POWER (HEADPHONE MODE)
2.5
vs. OUTPUT POWER (HEADPHONE MODE)
0
0
R
f = 1kHz
R
THD+N = 10%
L
L
V
R
DD
L
= 32Ω
= 16Ω
= 16Ω
3.0
f = 20Hz
f = 20Hz
= 5V
20
f = 1kHz
20
OUTPUT POWER (mW)
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
OUTPUT POWER
f = 10kHz
3.5
40
THD+N = 1%
f = 10kHz
4.0
40
f = 1kHz
60
4.5
60
80
5.0
100
5.5
80
0.001
100
0.01
100
80
60
10
Typical Operating Characteristics (continued)
90
70
50
40
30
20
0.1
10
0
80
70
60
50
40
30
20
10
1
0
vs. LOAD RESISTANCE (HEADPHONE MODE)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. SUPPLY VOLTAGE (HEADPHONE MODE)
10
2.5
vs. OUTPUT POWER (HEADPHONE MODE)
0
R
f = 1kHz
V
R
L
DD
L
f = 20Hz
= 32Ω
= 32Ω
= 5V
3.0
f = 1kHz
20
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
OUTPUT POWER
OUTPUT POWER
3.5
f = 10kHz
THD+N = 10%
100
4.0
40
THD+N = 1%
THD+N = 10%
THD+N = 1%
4.5
60
V
f = 1kHz
5.0
DD
= 5V
1000
5.5
80
0.001
0.01
70
60
50
40
30
20
10
100
80
300
250
200
150
100
0.1
0
10
50
1
0
vs. LOAD RESISTANCE (HEADPHONE MODE)
TOTAL HARMONIC DISTORTION PLUS NOISE
10
vs. OUTPUT POWER (HEADPHONE MODE)
vs. OUTPUT POWER (HEADPHONE MODE)
0
0
R
L
= 16Ω
f = 20Hz
10
f = 1kHz
30
POWER DISSIPATION
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
OUTPUT POWER (mW)
OUTPUT POWER
R
20
L
= 32Ω
60
R
f = 10kHz
L
= 16Ω
100
30
THD+N = 10%
f = 1kHz
P
OUT
THD+N = 1%
90
= P
40
OUTL
120
f = 1kHz
+ P
50
OUTR
1000
150
60