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MAX9720 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # MAX9720
Description  50mW, DirectDrive, Stereo Headphone Amplifier with SmartSense and Shutdown
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX9720 Datasheet(HTML) 3 Page - Maxim Integrated Products

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50mW, DirectDrive, Stereo Headphone
Amplifier with SmartSense and Shutdown
_______________________________________________________________________________________
3
Note 1: All specifications are 100% tested at TA = +25oC; temperature limits are guaranteed by design.
Note 2: Inputs are AC-coupled to ground.
Note 3: Inputs are connected directly to ground.
ELECTRICAL CHARACTERISTICS (continued)
(VDD = VMODE1 = VMODE2 = 3.0V, PGND = SGND = 0V, RL =
∞, C1 = C2 = 2.2µF. TA = TMIN to TMAX, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
RL = 32
Ω,
POUT = 30mW
0.003
Total Harmonic Distortion Plus
Noise
THD+N
fIN = 1kHz
RL = 16
Ω,
POUT = 30mW
0.005
%
Signal-to-Noise Ratio
SNR
fIN = 1kHz, VOUT = 0.5VRMS, RL = 16
Ω,
BW = 22Hz to 22kHz
97
dB
Slew Rate
SR
0.8
V/µs
Maximum Capacitive Load
CL
No sustained oscillations
150
pF
Crosstalk
RL = 32
Ω, POUT = 1mW, fIN = 10kHz
75
dB
Thermal Shutdown Threshold
140
oC
Thermal Shutdown Hysteresis
15
oC
SmartSense
Shorted Load Threshold
RSMS
2.4
4
5.6
Pulse Duration
tSMS
3.1
µs
DEBOUNCE TIME (TIME)
TIME Charging Current
ITIME
0.7
1.1
1.8
µA
TIME Discharge Switch
Resistance
RTIME
HPS = GND
4
10
k
TIME Threshold
VTIME
1
1.1
1.2
V
HEADPHONE SENSE INPUT (HPS)
VIH
0.9 x
VDD
HPS Threshold
VIL
0.7 x
VDD
V
Input Leakage Current
IIL
MODE1= MODE2 = GND
±1µA
Input Capacitance
CIN
10
pF
ALERT
Output Current High
IOH
VALERT = VDD
1µA
Output Voltage Low
VOL
IOL = 3mA
0.4
V
MODE_ INPUT
VIH
0.7 x
VDD
MODE_ Thresholds
VIL
0.3 x
VDD
V
MODE_ Input Leakage Current
±1µA


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