參數(shù)資料
型號： LM4931
廠商： National Semiconductor Corporation
英文描述： Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers
中文描述： 與單聲道音頻子系統(tǒng)高效揚聲器和立體聲耳機放大器
文件頁數(shù)： 9/47頁
文件大?。?/td> 1640K
代理商： LM4931
Electrical Characteristics DV
DD
= 3.3V, AV
DD
= 5V, R
LHP
= 32
, R
LHF
= 8
(Notes 1, 2) (Continued)
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4931
Units
(Limits)
Typical
(Note 6)
Limits
(Note 7)
V
FS
Full-Scale Output Voltage (Mono
speaker amplifie)r
Total Harmonic Distortion + Noise
Loudspeaker Amplifier Output
Power
Power Supply Rejection Ratio
(Loudspeaker Amplifier)
8
load, 0dB gain setting
2.6
V
P-P
THD+N
P
OLS
f
OUT
= 1kHz, P
OUT
= 400mW
THD = 1%, f
OUT
= 1kHz
0.16
1.1
%
W
PSRR
C
B
= 1.0μF
V
RIPPLE
= 200mV
PP
f
RIPPLE
= 217Hz
Signal = V
O
at 0dBFS, f = 1kHz
Noise = digital zero, A-weighted
0dB gain setting (Note 10)
f
MCLK
= 12.288MHz, PLL disabled
f
MCLK
= 12MHz, PLL active
Signal = V
O
at 0dBFS, f = 1kHz
Noise = digital zero, A-weighted
0dB gain setting (Note 10)
f
MCLK
= 12.288MHz, PLL disabled
f
MCLK
= 12MHz, PLL active
A-Weighted filter, V
IN
= digital zero (Note
10)
f
MCLK
= 12.288MHz, PLL disabled
f
MCLK
= 12MHz, PLL active
56
dB
SNR (Voice)
Signal-to-Noise Ratio of Voice
Channel (Loudspeaker Amplifier)
70
69
dB
dB
SNR (Music)
Signal-to-Noise Ratio of Music
Channel (Loudspeaker Amplifier)
74
73
dB
dB
e
N
(Music)
Output Noise
250
320
10
–34.5
12
1.5
μV
μV
mV
dB
dB
dB
V
OS
Offset Voltage
Volume Control Range
(Loudspeaker Amplifier)
Volume Control Step Size
VCR
Minimum Gain
Maximum Gain
SS
Headphone Amplifier
V
FS
Full-Scale Output Voltage
(Headphone Amplifier)
Total Harmonic Distortion + Noise
(Headphone Amplifier)
Output Power (Headphone
Amplifier)
Power Supply Rejection Ratio
(Headphone Amplifier)
32
stereo load, 0dB gain setting
2.6
V
P-P
THD+N
f
IN
= 1kHz, P
OUT
= 7.5mW
32
stereo load
THD = 0.5%, f
OUT
= 1kHz
0.05
%
P
OHP
26
20
mW (min)
PSRR
C
B
= 1.0μF
V
RIPPLE
= 200mV
PP
f
RIPPLE
= 217Hz
Signal = V
O
at f = 1kHz and 1% THD+N,
Noise = digital zero, A-weighted
0dB gain setting (Note 10)
f
MCLK
= 12.288MHz, PLL disabled
f
MCLK
= 12MHz, PLL active
Signal = V
O
at f = 1kHz and 1% THD+N,
Noise = digital zero, A-weighted
0dB gain setting (Note 10)
f
MCLK
= 12.288MHz, PLL disabled
f
MCLK
= 12MHz, PLL active
70
dB
SNR (Voice)
Signal-to-Noise Ratio of Voice
Channel (Headphone Amplifier)
75
73
dB
dB
SNR (Music)
Signal-to-Noise Ratio of Music
Channel (Headphone Amplifier)
86
82
dB
dB
L
www.national.com
9
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相關代理商/技術參數(shù)
參數(shù)描述
LM4931_06 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Audio Subsystem with Mono High Efficiency Loudsperker and Stereo Headphone Amplifiers
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LM4931ITLBD 功能描述:BOARD EVALUATION LM4931ITL RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:-
LM49321 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression
LM49321RL 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Audio Sub-System with Stereo DAC, Mono Class AB Loudspeaker Amplifier, OCL/SE Stereo Headphone Output and RF Suppression
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