MAX9741 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX9741 Datasheet PDF : 16 Pages
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12W+12W, Low-EMI, Spread-Spectrum,
Stereo, Class D Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 18V, GND = PGND = 0V, SHDN ≥ VIH, AV = 16dB, CSS = CIN = 0.47µF, CREG = 0.01µF, C1 = 100nF, C2 = 1µF, FS1 = FS2 =
GND (fS = 670kHz), RL connected between OUTL+ and OUTL- and OUTR+ and OUTR-, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETER
Continuous Output Power
(Notes 4, 5)
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Crosstalk
Oscillator Frequency
SYMBOL
CONDITIONS
VDD = 18V, THD+N = RL = 8Ω
10%, f = 1kHz
RL = 4Ω
PCONT
VDD = 24V, THD+N =
10%, f = 1kHz
RL = 8Ω
RL = 4Ω
VDD = 12V, THD+N = RL = 8Ω
10%, f = 1kHz
RL = 4Ω
THD+N
fIN = 1kHz, either FFM or SSM, RL = 8Ω,
POUT = 4W
SNR
RL = 8Ω,
POUT = 4W,
f = 1kHz
BW = 22Hz to 22kHz
Unweighted
A-weighted
FFM
SSM
FFM
SSM
Left to right, right to left, 8Ω load, fIN = 10kHz
FS1 = L, FS2 = L
fOSC
FS1 = L, FS2 = H
FS1 = H, FS2 = L
FS1 = H, FS2 = H (spread-spectrum mode)
MIN TYP MAX UNITS
12
6.5
11
W
5
8
8.5
0.1
%
95.8
91.8
dB
99.1
95.7
65
dB
560
670
800
930
470
kHz
670
±7%
Efficiency (Note 4)
η
Regulator Output
VREG
DIGITAL INPUTS (SHDN, FS_, G_)
Input Thresholds
Input Leakage Current
VDD = 12V, RL = 8Ω, POUT = 8W
VDD = 18V, RL = 8Ω, POUT = 10W
VIH
VIL
78
%
78
6
V
2.5
V
0.8
±1
µA
Note 2: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 3: PSRR is specified with the amplifier inputs connected to GND through CIN.
Note 4: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For RL = 8Ω, L = 68µH.
For RL = 12Ω, L = 100µH. For RL = 16Ω, L = 120µH.
Note 5: Output power measured at TA = +25°C, with a soak time of 15 minutes.
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