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MAX9724A Datasheet(PDF) 2 Page - Maxim Integrated Products

Part No. MAX9724A
Description  60mW, DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX9724A Datasheet(HTML) 2 Page - Maxim Integrated Products

 
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60mW, DirectDrive, Stereo Headphone Amplifier
with Low RF Susceptibility and Shutdown
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VDD to GND ..............................................................-0.3V to +6V
PVSS to SVSS .........................................................-0.3V to +0.3V
PGND to SGND .....................................................-0.3V to +0.3V
C1P to PGND..............................................-0.3V to (VDD + 0.3V)
C1N to PGND............................................(PVSS - 0.3V) to +0.3V
PVSS and SVSS to PGND..........................................-6V to +0.3V
IN_ to SGND (MAX9724A)..........................-0.3V to (VDD + 0.3V)
IN_ to SGND (MAX9724B) .............(SVSS - 0.3V) to (VDD + 0.3V)
OUT_ to SVSS (Note 1) ....-0.3V to Min (VDD - SVSS + 0.3V, +9V)
OUT_ to VDD (Note 2) ......+0.3V to Max (SVSS - VDD - 0.3V, -9V)
SHDN to _GND.........................................................-0.3V to +6V
OUT_ Short Circuit to GND ........................................Continuous
Short Circuit between OUTL and OUTR ....................Continuous
Continuous Input Current into PVSS..................................260mA
Continuous Input Current (any other pin) .........................±20mA
Continuous Power Dissipation (TA = +70°C, Multilayer board)
12-Bump UCSP (derate 6.5mW/°C above +70°C) ........519mW
θJA ................................................................................154 C/W
12-Pin TQFN (derate 16.7mW/°C above +70°C) .........1333mW
θJA..................................................................................60°C/W
θJC..................................................................................11°C/W
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Bump Temperature (soldering) Reflow............................+235°C
ELECTRICAL CHARACTERISTICS
(VDD = 5V, PGND = SGND, SHDN = 5V, C1 = C2 = 1µF, RL = ∞, resistive load reference to ground; for MAX9724A gain = -1.5V/V
(RIN = 20kΩ, RF = 30kΩ); for MAX9724B gain = -1.5V/V (internally set), TA = -40°C to +85°C, unless otherwise noted. Typical values
are at TA = +25°C, unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
Supply Voltage Range
VDD
Guaranteed by PSRR test
2.7
5.5
V
Quiescent Current
ICC
3.5
5.5
mA
Shutdown Current
ISHDN
SHDN = SGND = PGND
0.1
1
µA
Shutdown to Full Operation
tSON
180
µs
Input Impedance
RIN
MAX9724B, measured at IN_
12
19
28
k
Ω
Output Offset Voltage
VOS
(Note 4)
±1.5
±10
mV
VDD = 2.7V to 5.5V, TA = +25°C
69
86
f = 1kHz, 100mVP-P (Note 4)
80
Power-Supply Rejection Ratio
PSRR
f = 20kHz, 100mVP-P (Note 4)
65
dB
RL = 32
Ω, THD+N = 1%
30
63
Output Power (TQFN)
POUT
RL = 16
Ω, THD+N = 1%
42
mW
RL = 32
Ω, THD+N = 1%
25
45
Output Power (UCSP)
POUT
RL = 16
Ω, THD+N = 1%
35
mW
Voltage Gain
AV
MAX9724B (Note 5)
-1.52
-1.5
-1.48
V/V
Channel-to-Channel Gain Tracking
MAX9724B
±0.15
%
RL = 1k
Ω, VOUT = 2VRMS, fIN = 1kHz
0.003
RL = 32
Ω, POUT = 50mW, fIN = 1kHz
0.02
Total Harmonic Distortion Plus
Noise (TQFN) (Note 6)
THD+N
RL = 16
Ω, POUT = 35mW, fIN = 1kHz
0.04
%
RL = 1k
Ω, VOUT = 2VRMS, fIN = 1kHz
0.003
RL = 32
Ω, POUT = 45mW, fIN = 1kHz
0.03
Total Harmonic Distortion Plus
Noise (UCSP) (Note 6)
THD+N
RL = 16
Ω, POUT = 32mW, fIN = 1kHz
0.05
%
BW = 22Hz to 22kHz
102
RL = 1k
Ω,
VOUT = 2VRMS
A-weighted
105
BW = 22Hz to 22kHz
98
Signal-to-Noise Ratio
SNR
RL = 32
Ω,
POUT = 50mW
A-weighted
101
dB
Note 1: OUTR and OUTL should be limited to no more than 9V above SVSS, or above VDD + 0.3V, whichever limits first.
Note 2: OUTR and OUTL should be limited to no more than 9V below VDD, or below SVSS - 0.3V, whichever limits first.


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