Datasheet

(PV
DD
= V
DD
= +20V, PGND = GND = 0V, C
SS
= 0.47µF, C
REG
= 0.01µF, C1 = 0.1µF, C2 = 1µF, R
LOAD
= 8Ω, SHDN = high, MONO
= low, MUTE = high, G1 = low, G2 = high, FS1 = FS2 = high (SSM), SYNCIN = low. All load resistors (R
L
) are between OUT_+ and
OUT_-, T
A
= +25°C, unless otherwise stated.)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (STEREO MODE)
MAX9709 toc02
OUTPUT POWER (W)
THD+N (%)
2015105
0.1
1
10
100
0.01
0 25
R
LOAD
= 4
R
LOAD
= 8
PV
DD
= 12V
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (STEREO MODE)
MAX9709 toc03
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.1
10 100k
1
0.01
P
OUT
= 12W
EFFICIENCY vs. OUTPUT POWER
(STEREO MODE)
MAX9709 toc04
OUTPUT POWER (W)
EFFICIENCY (%)
252015105
10
20
30
40
50
60
70
80
90
100
0
030
OUTPUT POWER vs. SUPPLY VOLTAGE
(STEREO MODE)
MAX9709 toc05
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
222018161412
5
10
15
20
25
30
35
0
10 24
THD+N = 1%
THD+N = 10%
NO-LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE (STEREO MODE)
MAX9709 toc06
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
2018161412
12
14
16
18
20
22
24
10
10 22
T
A
= +25°C
T
A
= +85°C
T
A
= -40°C
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9709 toc07
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
201812 14 16
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
10 22
SHDN = 0
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (STEREO MODE)
MAX9709 toc01
OUTPUT POWER (W)
THD+N (%)
30252015105
0.1
1
10
100
0.01
0 35
f
IN
= 1kHz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (MONO MODE)
MAX9709 toc08
OUTPUT POWER (W)
THD+N (%)
5040302010
0.1
1
10
100
0.01
0 60
R
LOAD
= 4
f
IN
= 1kHz
MAX9709 25W/50W, Filterless, Spread-Spectrum,
Stereo/Mono, Class D Amplier
Maxim Integrated
5
www.maximintegrated.com
Typical Operating Characteristics