參數(shù)資料
型號： LM4930
廠商： National Semiconductor Corporation
英文描述： Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers
中文描述： 音頻子系統(tǒng)的立體聲耳機(jī)
文件頁數(shù)： 10/33頁
文件大?。?/td> 966K
代理商： LM4930
Electrical Characteristics DV
DD
= 3.3V, AV
DD
= 5V, R
LHP
= 32
, R
LHF
= 8
(Notes 1, 2, 8) (Continued)
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4930
Units
(Limits)
Typical
(Note 6)
Limits
(Notes 7,
15)
V
MIC_BIAS
Mic Bias Voltage
THD+N
Headphone Amplifier Total
Harmonic Motion Distortion +
Noise
P
OHP
Headphone Amplifier Output
Power
P
OLS
Mono Speaker Amplifier Output
Power
PSRR
Power Supply Rejection Ratio
2.0
0.07
V
%
f
IN
= 1 kHz, P
OUT
= 7.5mW; 32
Stereo
Load
THD+N = 0.5%, f
OUT
= 1kHz
27
20
mW (min)
THD+N = 3%, f
OUT
= 1kHz
1
W
C
BYPASS
= 1.0μF
C
DAC_REF
= 1.0μF
V
RIPPLE
= 200mV
P-P
@
217Hz, MIC_P,
MIC_N terminated with 10
to ground
Signal = Vo at f = 1kHz
@
1% THD+N,
32
Stereo Load; Noise = digital zero,
A-weighted, 0dB gain setting
Signal = Vo at f = 1kHz
@
1% THD+N,
32
Stereo Load; Noise = digital zero,
A-weighted; 0dB gain setting
Signal = Vo at f = 1kHz
@
1% THD+N,
32
Stereo Load; Noise for -60dBFS
digital input; A-weighted; 0dB gain setting
Signal = Vo at f=1kHz
@
1% THD+N, 32
Stereo Load; Noise for -60dBFS digital
input; A-weighted, 0dB gain setting
Reference signal = 0dBFS
MIC_P, MIC_N terminated with 10
to
ground;
A-weighted; 47dB MIC preamp gain
setting
Reference signal = 0dBFS
Noise for -60dBFS digital input;
A-weighted; 47dB MIC preamp gain
setting
f
S
= 48kHz, f
IN
= 1kHz sinewave at
-3dB
FS
17dB MIC Preamp gain setting
55
45
dB (min)
SNR
(Voice)
Signal-to-Noise Ratio
(Voice Audio Path)
72
dB
SNR
(Music)
Signal-to-Noise Ratio (Music
Audio Path)
86
dB
DR
(Voice)
Dynamic Range (Voice Audio
Path)
72
dB
DR
(Music)
Dynamic Range (Music Audio
Path)
86
dB
SNR
ADC
Signal-to-Noise Ratio
(Voice ADC Path)
75
dB
DR
ADC
Dynamic Range
(Voice ADC Path)
75
dB
X
TALK
Stereo Channel-to-Channel
Crosstalk
Maximum Differential MIC Input
Voltage
Voice DAC Ripple
75
dB
V
MIC-IN
570
mV
P-P
R
VDAC
300Hz - 3.3kHz through head-phone
output.
300Hz - 3.3kHz through head-phone
output.
-3dB Point
Above 4kHz
Upper -3dB Point
+/-0.15
+/-0.2
dB (max)
R
VADC
Voice ADC Ripple
+/-0.25
+/-0.3
dB (max)
PB
VDAC
SBA
VDAC
Voice DAC Stopband Attenuation
UPB
VADC
Voice ADC Upper Passband
Cutoff Frequency.
Voice DAC Passband
3.46
72
3.47
kHz
dB
kHz
L
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4930_04 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers
LM4930ITL 制造商:Texas Instruments 功能描述:Audio Amp Headphone/Microphone/Speaker 1-CH Mono/2-CH Stereo 1W Class-AB 36-Pin uSMD T/R
LM4930ITL/NOPB 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4930ITLX 制造商:Texas Instruments 功能描述:Audio Amp Headphone/Microphone/Speaker 1-CH Mono/2-CH Stereo 1W Class-AB 36-Pin uSMD T/R
LM4930ITLX/NOPB 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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