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參數(shù)資料
| 型號： | MAX9718A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers |
| 中文描述： | 低成本，單聲道/立體聲，以1.4W差分音頻功率放大器 |
| 文件頁數(shù)： | 4/23頁 |
| 文件大?。?/td> | 569K |
| 代理商： | MAX9718A |
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
M
FREQUENCY (Hz)
T
100
1k
10k
0.001
0.01
0.1
1
10
0.0001
10
100k
V
CC
= 5V
R
L
= 4
A
V
= 2
OUTPUT POWER = 1W
OUTPUT POWER = 50mW
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
M
FREQUENCY (Hz)
T
100
1k
10k
0.001
0.01
0.1
1
10
0.0001
10
100k
V
CC
= 5V
R
L
= 4
A
V
= 4
OUTPUT POWER = 1W
OUTPUT POWER = 200mW
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
M
FREQUENCY (Hz)
T
100
1k
10k
0.001
0.01
0.1
1
10
0.0001
10
100k
V
CC
= 5V
R
L
= 8
A
V
= 2
OUTPUT POWER = 250mW
OUTPUT POWER = 750mW
Typical Operating Characteristics
(V
CC
= 5V, C
BIAS
= 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, T
A
= +25
°
C, unless otherwise noted.)
Note 1:
All specifications are 100% tested at T
A
= +25
°
C. Specifications over temperature (T
A
= T
MIN
to T
MAX
) are guaranteed by
design, not production tested.
Note 2:
Quiescent power-supply current is specified and tested with no load. Quiescent power-supply current depends on the offset
voltage when a practical load is connected to the amplifier. Guaranteed by design.
Note 3:
Common-mode bias voltage is the voltage on BIAS and is nominally V
CC
/2.
Note 4:
Output power is specified by a combination of a functional output current test and characterization analysis.
Note 5:
Measurement bandwidth for THD+N is 22Hz to 22kHz.
Note 6:
Peak voltage measured at power-on, power-off, into or out of SHDN. Bandwidth defined by A-weighted filters, inputs at AC
GND. V
CC
rise and fall times greater than or equal to 1ms.
M
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
—
3V Supply (continued)
(V
CC
= 3V, GND = 0, SHDN/
SHDN
= V
CC
(MAX9718/MAX9719), SHDM = GND (MAX9718), R
IN
= R
F
= 10k
(MAX971_A),
T
A
= +25
°
C. C
BIAS
= 0.1μF, no load. Typical values are at T
A
= +25
°
C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
P
OUT
CONDITIONS
MIN
TYP
475
MAX
UNITS
mW
Output Power
R
L
= 8
, THD+N = 1%, f
IN
= 1kHz (Note 4)
R
L
= 8
, f
IN
= 1kHz, P
OUT
= 0.25W,
A
V
= 6dB
Total Harmonic Distortion Plus
Noise
THD+N
0.003
%
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
Maximum Capacitive Drive
+160
15
500
°
C
°
C
pF
C
LOAD
Bridge-tied capacitance
Power-Up/Enable from
Shutdown Time
t
PU
10
ms
Shutdown Time
Turn-Off Transient
Crosstalk
t
SHDN
V
POP
3
40
-85
μs
mV
dB
(Note 6)
MAX9719, f
N
= 1kHz
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