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.)
PIN NAME FUNCTION
1, 12, 42, 43, 44,
55, 56
N.C. No Connection. Not internally connected.
2, 3, 4, 39, 40,
41, 49, 50
PGND Power Ground
5, 6, 7,
36, 37, 38
PV
DD
Positive Power Supply. Bypass to PGND with a 0.1µF and a 47µF capacitor with the smallest
capacitor placed as close to pins as possible.
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
MAX9709 toc21
FREQUENCY (Hz)
CMRR (dB)
10k1k100
-105
-100
-95
-90
-85
-80
-75
-70
-65
-60
-110
10 100k
INPUT REFERRED
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9709 toc22
FREQUENCY (Hz)
PSRR (dB)
10k1k100
-100
-90
-80
-70
-60
-50
-40
-30
-110
10 100k
CROSSTALK vs. FREQUENCY
MAX9709 toc23
FREQUENCY (Hz)
CROSSTALK (dB)
10k1k100
-110
-100
-90
-80
-70
-60
-50
-40
-120
10 100k
MAXIMUM STEADY-STATE OUTPUT POWER
vs. TEMPERATURE (STEREO MODE)
MAX9709 toc24
AMBIENT TEMPERATURE (°C)
OUTPUT POWER PER CHANNEL (W)
605040
5
10
15
20
25
30
35
0
30 70
f
IN
= 1kHz
TH0 = TH1 = 1
TH2 = 0
MAXIMUM STEADY-STATE OUTPUT POWER
vs. TEMPERATURE (MONO MODE)*
MAX9709 toc25
AMBIENT TEMPERATURE (°C)
OUTPUT POWER (W)
605040
10
20
30
40
50
60
70
0
30
*MEASURED WITH THE MAX9709EVKIT,
JUNCTION TEMPERATURE MAINTAINED AT +110°C.
70
R
LOAD
= 4
f
IN
= 1kHz
TH0 = TH1 = 1
TH2 = 0
MAX9709 25W/50W, Filterless, Spread-Spectrum,
Stereo/Mono, Class D Amplier
Maxim Integrated
8
www.maximintegrated.com
Typical Operating Characteristics (continued)
Pin Description