Datasheet
(PV
DD
= V
DD
= +20V, PGND = GND = 0V, C
SS
= 0.47µF, C
REG
= 0.01µF, C1 = 0.1µF, C2 = 1µF, R
LOAD
= ∞, MONO = low (stereo
mode), SHDN = MUTE = high, G1 = low, G2 = high (A
V
= 22dB), FS1 = FS2 = high (SSM), SYNCIN = low. All load resistors (R
L
) are
connected between OUT_+ and OUT_-, unless otherwise stated. T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Gain A
V
G1 = 0, G2 = 1 21.6 22.0 22.3
dB
G1 = 1, G2 = 1 24.9 25.0 25.6
G1 = 1, G2 = 0 29.2 29.5 29.9
G1 = 0, G2 = 0 35.9 36.0 36.6
TEMP Flag Threshold T
FLAG
TH2 TH1 TH0
°C
0 0 0 80
0 0 1 90
0 1 0 100
0 1 1 110
1 0 0 120
1 0 1 129
1 1 0 139
1 1 1
TEMP Flag Accuracy From +80°C to +140°C ±6 °C
TEMP Flag Hysteresis 2 °C
STEREO MODE (R
LOAD
= 8Ω, Note 3)
Quiescent Current
MUTE = 1, R
LOAD
= ∞ 20 33
mA
MUTE = 0 6.5 13
Output Power P
OUT
f = 1kHz, THD =
10%, T
A
= +25°C
P
VDD
= 20V 25
W
P
VDD
= 22V 29
P
VDD
= 12V,
R
LOAD
= 4Ω
15
Total Harmonic Distortion Plus
Noise
THD+N
f = 1kHz, BW = 22Hz to 22kHz,
P
OUT
= 12W
0.1 %
Signal-to-Noise Ratio SNR P
OUT
= 10W
22Hz to 22kHz 91
dB
A-weighted 96
Efciency η P
OUT
= 25W + 25W, f = 1kHz 87 %
Left-Right Channel Gain
Matching
R
LOAD
= ∞ 0.2 %
MAX9709 25W/50W, Filterless, Spread-Spectrum,
Stereo/Mono, Class D Amplier
www.maximintegrated.com
Maxim Integrated
│
3
Electrical Characteristics (continued)