max9705aeub+ Maxim Integrated Products, Inc., max9705aeub+ Datasheet - Page 5

• Manufacturer Part Number: max9705aeub+
• Description: Max9705 2.3w, Ultra-low-emi, Filterless, Class D Audio Amplifier
• Manufacturer: Maxim Integrated Products, Inc.

(V
load condition apply to the MAX9705_ETB+T and MAX9705_EUB+ only.)
DD
0.01
100
0.001
0.1
0.01
10
100
100
0.1
1
= 3.3V, SYNC = V
10
90
80
70
60
50
40
30
20
10
1
0
10
2.5
0
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. COMMON-MODE VOLTAGE
V
R
V
f
P
GAIN = 6dB
R
IN
DD
L
DD
OUT
L
TOTAL HARMONIC DISTORTION
= 4Ω
= 1kHz
= 8Ω
= 3.3V
PLUS NOISE vs. FREQUENCY
= 3.3V to 5V
3.0
= 500mW
0.5
COMMON-MODE VOLTAGE (V)
100
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
3.5
FREQUENCY (Hz)
P
EFFICIENCY
OUT
1.0
_______________________________________________________________________________________
R
R
L
L
DD
= 800mW
1k
= 8Ω
= 4Ω
4.0
P
OUT
(SSM), differential input, T
1.5
= 100mW
4.5
10k
f
THD+N = 1%
IN
2.0
= 1kHz
5.0
100k
2.5
5.5
2.3W, Ultra-Low-EMI, Filterless,
0.01
Typical Operating Characteristics (continued)
100
0.1
10
100
100
1
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
800
A
10
0
= +25°C, unless otherwise noted. Typical Operating Characteristics for 4Ω
V
R
DD
L
TOTAL HARMONIC DISTORTION
= 4Ω
1000
PLUS NOISE vs. FREQUENCY
= 5.0V
0.2
100
R
vs. SYNC FREQUENCY
R
L
vs. OUTPUT POWER
SYNC FREQUENCY (kHz)
L
= 8Ω
1200
P
= 4Ω
OUTPUT POWER (W)
OUT
FREQUENCY (Hz)
EFFICIENCY
EFFICIENCY
0.4
= 1.75W
R
R
Class D Audio Amplifier
L
L
1400
1k
= 4Ω
= 8Ω
P
OUT
0.6
1600
= 250mW
10k
V
f
THD+N = 1%
IN
V
f
DD
IN
DD
0.8
1800
= 1kHz
= 1kHz
= 3.3V
= 3.3V
2000
100k
1.0
0.01
100
0.1
10
100
100
1
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
800
10
0
V
R
P
DD
L
OUT
R
TOTAL HARMONIC DISTORTION
= 8Ω
L
1000
PLUS NOISE vs. FREQUENCY
= 3.3V
0.5
= 8Ω
= 450mW
100
vs. SYNC FREQUENCY
vs. OUTPUT POWER
SYNC FREQUENCY (kHz)
1200
OUTPUT POWER (W)
1.0
FREQUENCY (Hz)
EFFICIENCY
FFM
EFFICIENCY
SSM
R
R
R
L
L
L
1400
1k
= 4Ω
1.5
= 8Ω
= 4Ω
1600
2.0
10k
V
f
THD+N = 1%
IN
V
f
DD
IN
DD
1800
= 1kHz
= 1kHz
2.5
= 5.0V
= 5.0V
100k
2000
3.0
5