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MAX9724A Datenblatt(Datasheet) 6 Page - Maxim Integrated Products

Teile-Nr. MAX9724A
Beschreibung  60mW, DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown
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Hersteller  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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 6 page
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60mW, DirectDrive, Stereo Headphone Amplifier
with Low RF Susceptibility and Shutdown
6
_______________________________________________________________________________________
Pin Description
PIN
TQFN
UCSP
NAME
FUNCTION
1
A1
C1P
Flying Capacitor Positive Terminal. Connect a 1µF ceramic capacitor from C1P to C1N.
2A2
PGND
Power Ground. Connect to SGND.
3
A3
C1N
Flying Capacitor Negative Terminal. Connect a 1µF ceramic capacitor from C1P to C1N.
4A4
PVSS
Charge-Pump Output. Connect to SVSS and bypass with a 1µF ceramic capacitor to PGND.
5C2
SHDN
Active-Low Shutdown Input
6
B3
INL
Left-Channel Input
7C1
SGND
Signal Ground. Connect to PGND.
8
B2
INR
Right-Channel Input
9B4
SVSS
Amplifier Negative Supply. Connect to PVSS.
10
C3
OUTR
Right-Channel Output
11
C4
OUTL
Left-Channel Output
12
B1
VDD
Positive Power-Supply Input. Bypass with a 1µF capacitor to PGND.
EP
EP
Exposed Paddle. Internally connected to SVSS. Connect to SVSS or leave unconnected.
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE (TQFN ONLY)
SUPPLY VOLTAGE (V)
5.0
4.5
4.0
3.5
3.0
20
40
60
80
100
120
140
0
2.5
5.5
NO LOAD INPUTS GND
EXITING SHUTDOWN
VSHDN
5V/div
VOUT_
500mV/div
VIN_
1V/div
40
µs/div
ENTERING SHUTDOWN
VSHDN
5V/div
VOUT_
500mV/div
VIN_
1V/div
20
µs/div
Typical Operating Characteristics (continued)
(VDD = 5V, PGND = SGND = 0V, SHDN = VDD, C1 = C2 = 1µF, RL =
∞, gain = -1.5V/V (RIN = 20kΩ, RF = 30kΩ for the MAX9724A),
THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, TA = +25°C, unless otherwise noted.)




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