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參數(shù)資料
| 型號： | MXF10A |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 1W Monaural, 85mW Stereo Headphone Audio Amplifier |
| 中文描述： | 1W的單聲道，85mW立體聲耳機(jī)音頻放大器 |
| 文件頁數(shù)： | 4/15頁 |
| 文件大小： | 384K |
| 代理商： | MXF10A |
Electrical Characteristics: Bridged-Mode Operation (V
DD
= 5V)
The following specifications apply for the circuit shown in Figure 1, R
L
= 8
, and a measurement bandwidth of 20Hz to
80kHz, unless otherwise specified. Limits apply for T
A
= 25C.
(Note 3)
Symbol
Parameter
Conditions
LM4914
Units
(Limits)
Typical
(Note 8)
Limit
(Notes 9, 10)
P
O
Output Power (Note 1, 11)
R
L
= 8
, f = 1kHz,
THD+N = 0.1%, A
V
= 8dB
R
L
= 8
, f = 1kHz, P
O
= 1W
C
B
= 0.47μF, 20Hz
<
f
<
20kHz
1
W (min)
THD+N
V
ON
Total Harmonic Distortion + Noise
Output Voltage Noise
0.33
35
%
μV
RMS
Electrical Characteristics: SE Operation (V
DD
= 5V)
The following specifications apply for the circuit shown in Figure 1 and a measurement bandwidth of 20Hz to 80kHz, unless
otherwise specified. Limits apply for T
A
= 25C.
(Note 3)
Symbol
Parameter
Conditions
LM4914
Units
(Limits)
Typical
(Note 8)
Limit
(Notes 9, 10)
P
O
Output Power (Note 11)
THD+N = 0.1%, f = 1kHz,
R
L
= 32
, A
V
= 1.9dB (Note 12)
C
B
= 0.47μF, 20Hz
<
f
<
20kHz
85
mW (min)
V
ON
Output Voltage Noise
13
μV
RMS
Electrical Characteristics for Entire Amplifier (V
DD
= 3V)
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T
A
= 25C.
(Note 3)
Symbol
Parameter
Conditions
LM4914
Units
(Limits)
Typical
(Note 8)
Limit
(Notes 9, 10)
2.5
5.5
5
4
V
DD
Supply Voltage
V (min)
V (max)
mA (max)
μA (max)
I
DD
I
SD
Quiescent Power Supply Current
Shutdown Quiescent Power Supply
Current
Output Offset Voltage
V
IN
= 0V, I
O
= 0A, No Load
V
SHUTDOWN
= GND
2.7
0.03
V
OS
7
30
mV (max)
PSRR
Power Supply Rejection Ratio
V
DD
= 3V, C
BYPASS
= 0.47μF,
V
ripple
= 200mVp-p 1kHz sine wave
R
L
= 8
52 BTL
60 SE
dB
HP-S
VIH
HP-SENSE Logic-High Threshold
Voltage
HP-SENSE Logic-Low Threshold
Voltage
Shutdown Logic High Threshold
Shutdown Logic LowThreshold
2.7
V (min)
HP-S
VIL
1.65
V (max)
SD
VIH
SD
VIL
2
V (min)
V (max)
0.8
L
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