參數(shù)資料
型號(hào)： 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(yè)數(shù)： 11/33頁(yè)
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)
LPB
VADC
Voice ADC Lower Passband
Cutoff Frequency.
SBA
VADC
Voice ADC Stopband Attenuation
SBA
NOTCH
Voice ADC Notch Attenuation
Lower -3dB Point
0.230
kHz
Above 4kHz
Centered on 55Hz, figure gives worst
case attenuation for 50Hz & 60Hz.
20Hz - 20kHz through head-phone output.
-3dB point
Above 24kHz
Signal = VO at f = 1kHz
@
1% THD+N;
f = 1kHz; Noise for -60dBFS digital input;
0dB gain; A-weighted
Signal = VO at f = 1kHz
@
1% THD+N;
f = 1kHz; Noise for -60dBFS digital input;
0dB gain; A-weighted
65
58
dB
dB
R
DAC
PB
DAC
SBA
DAC
DR
DAC
Audio DAC Ripple
Audio DAC Passband Width
Audio DAC Stopband Attenuation
Audio DAC Dynamic Range
Digital Filter Section
+/-0.1
22.7
76
97
+/-0.2
dB (max)
kHz
dB
dB
SNR
DAC
Audio DAC SNR Digital Filter
Section
97
dB
A
CH-CH
Stereo Channel-to-Channel Gain
Mismatch
Digital Input: Logic Low Voltage
Level
Digital Input: Logic High Voltage
Level
Volume Control Range
(Headphone amplifiers)
Volume Control Range (Mono
speaker amplifier)
Volume Control Step Size (Output
amplifiers)
Volume Control Range
(Microphone Preamp)
Volume Control Step Size
(Microphone Preamp)
Side Tone Attenuation Range
0.3
dB
V
IL
0.4
V
V
IH
1.4
V
Maximum Attenuation
Minimum Attenuation
Minimum Gain
Maximum Gain
-46.5
0
-34.5
12
1.5
dB
dB
dB
dB
dB
Minimum Gain
Maximum Gain
17
47
2
dB
dB
dB
Maximum Attenuation
Minimum Attenuation
-30
0
3
dB
dB
dB
MHz
MHz
% (min)
% (max)
kHz
Side Tone Attenuation Step Size
MCLK frequency
f
MCLK
CLOCK_DIV = 0
CLOCK_DIV = 1
12.288
24.576
50
MCLK Duty Cycle
40
60
f
CONV
Sampling Clock Frequency (Note
9)
SCL_CLK Frequency
SCL_CLK, SCL_DATA Rise Time
SCL_CLK, SDA_DATA Fall Time
SDA_DATA Hold Time
SDA_DATA Setup Time
48
f
CLKSCL
t
RISESCL
t
FALLSCL
t
SDAH
t
SDAS
400
300
300
500
500
kHz
ns
ns
ns
ns
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(chēng):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(lèi)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(lèi)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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