MAX9759 Просмотр технического описания (PDF) - Maxim Integrated
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MAX9759 Datasheet PDF : 20 Pages
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3.2W, High Efficiency, Low-EMI, Filterless,
Class D Audio Amplifier
ELECTRICAL CHARACTERISTICS (VDD = 5.0V) (continued)
(VDD = PVDD = SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = 0V (FFM). Gain = 12dB (G1 = 0, G2 = 1). Speaker load resistor
(RL) connected between OUT+ and OUT-, unless otherwise noted, RL = ∞, TA = TMIN to TMAX, unless otherwise noted. Typical val-
ues are at TA = +25°C.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Power
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
POUT
THD+N
SNR
RL = 3Ω
THD+N = 1%
RL = 4Ω
RL = 8Ω
RL = 3Ω
THD+N = 10%
RL = 4Ω
RL = 8Ω
fIN = 1kHz, either
FFM or SSM,
POUT = 1W
RL = 3Ω
RL = 4Ω
RL = 8Ω
POUT = 1W,
RL = 8Ω
BW = 22Hz to
22kHz
A-weighted
FFM
SSM
FFM
SSM
3.4
2.6
1.4
W
4.3
3.2
1.8
0.08
0.05
%
0.02
93
89
dB
96
92
SYNC = GND (FFM mode)
1000 1100 1200
Oscillator Frequency
fOSC
SYNC = FLOAT (FFM mode)
SYNC = VDD (SSM mode)
1102 1500 1837
kHz
1200
±70
SYNC Frequency Lock Range
TTL-compatible clock input
1000
1600 kHz
Click-and-Pop Level
Peak voltage,
Into shutdown
-50
KCP A-weighted, 32 samples
dB
per second (Notes 3, 4) Out of shutdown
-57
Efficiency
η
POUT = 1W, fIN = 1kHz, RL = 8Ω in series
with 68µH
92
%
DIGITAL INPUTS (SHDN, MUTE, G1, G2, SYNC)
SYNC, G1, G2 Input Voltage High
SYNC, G1, G2 Input Voltage Low
SHDN, MUTE Voltage High
VINH
VINL
VINH
VDD x 0.9
2
V
VDD x 0.1 V
V
SHDN, MUTE Voltage Low
VINL
0.8
V
SYNC Input Resistance
200
kΩ
SYNC Input Current
SHDN, MUTE, G1, G2 Input
Current
SYNC Capacitance
±35
µA
±1
µA
10
pF
DIGITAL OUTPUTS (SYNC_OUT)
Output Voltage High
Output Voltage Low
SYNC_OUT Capacitive Drive
VOH
VOL
IOH = 3mA
IOL = 3mA
TTL-compatible clock output
2.4
V
0.4
V
100
pF
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