MAX9770ETI+ Maxim Integrated Products, MAX9770ETI+ Datasheet - Page 5

• 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

0.001
(V
noted.)
0.001
0.01
0.01
0.001
0.1
0.1
10
0.01
DD
10
100
1
0.1
1.2W, Low-EMI, Filterless, Mono Class D Amplifier
1
10
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
10
= 3.3V, BW = 22Hz to 22kHz, GAIN1 = 1, GAIN2 = 0, spread-spectrum mode, headphone outputs in phase, unless otherwise
10
0
vs. OUTPUT POWER (SPEAKER MODE)
V
P
R
R
V
R
vs. FREQUENCY (SPEAKER MODE)
vs. FREQUENCY (SPEAKER MODE)
DD
OUT
L
L
DD
L
P
= 8Ω
= 8Ω
= 4Ω
OUT
= 5V
= +5V
= 1W
f = 20Hz
with Stereo DirectDrive Headphone Amplifiers
FFM MODE
P
SSM MODE
100
OUT
= 25mW
100
200
OUTPUT POWER (mW)
= 1000mW
FREQUENCY (Hz)
FREQUENCY (Hz)
_______________________________________________________________________________________
f = 1kHz
1k
400
1k
f = 10kHz
10k
10k
600
800
100k
100k
0.001
0.01
0.001
0.001
0.1
0.01
0.01
10
100
100
0.1
0.1
1
10
10
1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
10
0
0
vs. OUTPUT POWER (SPEAKER MODE)
vs. OUTPUT POWER (SPEAKER MODE)
V
R
V
f = 1kHz
R
R
vs. FREQUENCY (SPEAKER MODE)
DD
L
DD
L
L
= 8Ω
= 8Ω
= 4Ω
P
= 5V
= 5V
f = 20Hz
OUT
P
100
400
400
OUT
= 100mW
OUTPUT POWER (mW)
OUTPUT POWER (mW)
= 500mW
FREQUENCY (Hz)
SSM MODE
1k
800
800
f = 1kHz
FFM MODE
Typical Operating Characteristics
f = 10kHz
1200
1200
10k
1600
1600
100k
0.001
0.01
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.001
0.1
10
0.01
100
0.1
1
0
10
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
10
vs. LOAD RESISTANCE (SPEAKER MODE)
1
0
vs. OUTPUT POWER (SPEAKER MODE)
R
V
f = 1kHz
vs. FREQUENCY (SPEAKER MODE)
R
L
DD
L
= 8Ω
= 4Ω
P
f = 20Hz
= 5V
OUT
200
P
OUT
100
THD+N = 1%
= 40mW
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
= 400mW
OUTPUT POWER
FREQUENCY (Hz)
400
1k
10
f = 1kHz
THD+N = 10%
600
f = 10kHz
10k
800
1000
100k
100
5