MAX9720 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX9720 Datasheet PDF : 21 Pages
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50mW, DirectDrive, Stereo Headphone
Amplifier with SmartSense and Shutdown
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
Total Harmonic Distortion Plus
Noise
THD+N
Signal-to-Noise Ratio
SNR
Slew Rate
SR
Maximum Capacitive Load
CL
Crosstalk
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
SmartSense
Shorted Load Threshold
Pulse Duration
DEBOUNCE TIME (TIME)
RSMS
tSMS
TIME Charging Current
ITIME
TIME Discharge Switch
Resistance
RTIME
TIME Threshold
VTIME
HEADPHONE SENSE INPUT (HPS)
CONDITIONS
fIN = 1kHz
RL = 32Ω,
POUT = 30mW
RL = 16Ω,
POUT = 30mW
fIN = 1kHz, VOUT = 0.5VRMS, RL = 16Ω,
BW = 22Hz to 22kHz
No sustained oscillations
RL = 32Ω, POUT = 1mW, fIN = 10kHz
HPS = GND
VIH
HPS Threshold
VIL
Input Leakage Current
Input Capacitance
ALERT
Output Current High
Output Voltage Low
MODE_ INPUT
IIL
MODE1= MODE2 = GND
CIN
IOH
VALERT = VDD
VOL
IOL = 3mA
VIH
MODE_ Thresholds
VIL
MODE_ Input Leakage Current
MIN TYP MAX UNITS
0.003
%
0.005
97
dB
0.8
V/µs
150
pF
75
dB
140
oC
15
oC
2.4
4
5.6
Ω
3.1
µs
0.7
1.1
1.8
µA
4
10
kΩ
1
1.1
1.2
V
0.9 x
VDD
V
0.7 x
VDD
±1
µA
10
pF
1
µA
0.4
V
0.7 x
VDD
V
0.3 x
VDD
±1
µA
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.
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