MAX9720 Maxim, MAX9720 Datasheet - Page 3

• Manufacturer Part Number: MAX9720
• Description: 50mW / DirectDrive / Stereo Headphone Amplifier with SmartSense and Shutdown
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
Typical values are at T
Note 1: All specifications are 100% tested at T
Note 2: Inputs are AC-coupled to ground.
Note 3: Inputs are connected directly to ground.
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Slew Rate
Maximum Capacitive Load
Crosstalk
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
SmartSense
Shorted Load Threshold
Pulse Duration
DEBOUNCE TIME (TIME)
TIME Charging Current
TIME Discharge Switch
Resistance
TIME Threshold
HEADPHONE SENSE INPUT (HPS)
HPS Threshold
Input Leakage Current
Input Capacitance
ALERT
Output Current High
Output Voltage Low
MODE_ INPUT
MODE_ Thresholds
MODE_ Input Leakage Current
DD
= V
MODE1
PARAMETER
= V
Amplifier with SmartSense and Shutdown
MODE2
_______________________________________________________________________________________
A
= +25°C.) (Note 1)
50mW, DirectDrive, Stereo Headphone
= 3.0V, PGND = SGND = 0V, R
SYMBOL
THD+N
R
V
R
I
SNR
t
V
TIME
C
I
SMS
TIME
TIME
SR
C
SMS
OH
I
OL
IL
IN
L
A
f
f
BW = 22Hz to 22kHz
No sustained oscillations
R
HPS = GND
V
V
MODE1= MODE2 = GND
V
I
V
V
IN
IN
OL
L
IH
IL
ALERT
IH
IL
= +25
= 1kHz
= 1kHz, V
= 32Ω, P
= 3mA
o
= V
C; temperature limits are guaranteed by design.
DD
OUT
OUT
L
= ∞, C1 = C2 = 2.2µF. T
CONDITIONS
= 1mW, f
= 0.5V
R
P
R
P
RMS
OUT
OUT
L
L
IN
= 16Ω,
= 32Ω,
, R
= 10kHz
= 30mW
= 30mW
L
= 16Ω,
A
= T
MIN
0.9 x
0.7 x
MIN
V
V
2.4
0.7
DD
DD
4
1
to T
MAX,
0.003
0.005
TYP
150
140
0.8
3.1
1.1
1.1
97
75
15
10
4
unless otherwise noted.
MAX
0.7 x
0.3 x
V
V
5.6
1.8
1.2
0.4
10
±1
±1
DD
DD
1
UNITS
V/µs
dB
pF
dB
µA
kΩ
µA
pF
µA
µA
o
o
µs
%
Ω
V
V
V
V
C
C
3