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.)
EFFICIENCY vs. OUTPUT POWER
(MONO MODE)
MAX9709 toc15
OUTPUT POWER (W)
EFFICIENCY (%)
5040302010
10
20
30
40
50
60
70
80
90
100
0
060
R
LOAD
= 4Ω
OUTPUT POWER vs. SUPPLY VOLTAGE
(MONO MODE)
MAX9709 toc16
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
222018161412
10
20
30
40
50
60
70
0
10 24
THD+N = 1%
THD+N = 10%
R
LOAD
= 4
f
IN
= 1kHz
OUTPUT POWER vs. LOAD RESISTANCE
(MONO MODE)
MAX9709 toc17
LOAD RESISTANCE ()
OUTPUT POWER (W)
1086
10
20
30
40
50
60
0
4 12
THD+N = 10%
f
IN
= 1kHz
OUTPUT POWER vs. LOAD RESISTANCE
(STEREO MODE)
MAX9709 toc18
LOAD RESISTANCE ()
OUTPUT POWER PER CHANNEL (W)
15141312111098
5
10
15
20
25
30
0
7 16
THD+N = 10%
f
IN
= 1kHz
MUTE RESPONSE
MAX9709 toc19
40ms/div
MUTE
5V/div
OUTPUT
50mV/div
SHUTDOWN RESPONSE
MAX9709 toc20
40ms/div
SHDN
5V/div
OUTPUT
50mV/div
MAX9709 25W/50W, Filterless, Spread-Spectrum,
Stereo/Mono, Class D Amplier
Maxim Integrated
7
www.maximintegrated.com
Typical Operating Characteristics (continued)