參數(shù)資料
型號(hào)： LM4809LD/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻／視頻放大
英文描述： 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO8
封裝： LLP-8
文件頁(yè)數(shù)： 16/21頁(yè)
文件大?。?/td> 971K
代理商： LM4809LD/NOPB
Electrical Characteristics V
DD = 3.3V (Notes 2, 3) (Continued)
The following specifications apply for V
DD = 3.3V unless otherwise specified, limits apply to TA = 25C.
Symbol
Parameter
Conditions
LM4809
Units
(Limits)
Typ
Limit
PSRR
Power Supply Rejection Ratio
C
B = 1.0F; VRIPPLE = 200mVPP,
f = 1kHz; Input terminated into 50
70
dB
V
SDIH
Shutdown Voltage Input High
0.8 x V
DD
V (min)
V
SDIL
Shutdown Voltage Input Low
0.2 x V
DD
V (max)
Electrical Characteristics V
DD = 2.6V (Notes 2, 3)
The following specifications apply for V
DD = 2.6V unless otherwise specified, limits apply to TA = 25C.
Symbol
Parameter
Conditions
LM4809
Units
(Limits)
Typ
Limit
I
DD
Supply Current
V
IN = 0V, IO = 0A
0.9
mA
I
SD
Shutdown Current
V
IN = 0V, VSHUTDOWN = GND
0.2
A
V
OS
Output Offset Voltage
V
IN = 0V
4.0
mV
P
O
Output Power
THD+N = 0.1%, f = 1kHz
R
L =16
20
mW
R
L =32
16
mW
THD+N
Total Harmonic Distortion
P
O = 15mW, RL =32
f = 20Hz to 20kHz
0.6
%
Crosstalk
Channel Separation
R
L =32
;P
O = 15mW
70
dB
PSRR
Power Supply Rejection Ratio
C
B = 1.0F; VRIPPLE = 200mVPP,
f = 1kHz; Input terminated into 50
70
dB
V
SDIH
Shutdown Voltage Input High
0.8 x V
DD
V (min)
V
SDIL
Shutdown Voltage Input Low
0.2 x V
DD
V (max)
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 3: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 4: Human body model, 100pF discharged through a 1.5k
resistor.
Note 5: Typical specifications are specified at +25OC and represent the most likely parametric norm.
Note 6: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 7: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 8: Machine Model ESD test is covered by specification EIAJ IC-121-1981. A 200pF cap is charged to the specified voltage, then discharged directly into the
IC with no external series resistor (resistance of discharge path must be under 50Ohms).
Note 9: The given
θJA is for an LM4809 packaged in an LDA08B wit the Exposed-Dap soldered to a printed circuit board copper pad with an area equivalent to that
of the Exposed-Dap itself.
Note 10: The given
θJA is for an LM4809 packaged in an LDA08B with the Exposed-Dap not soldered to any printed circuit board copper.
External Components Description (Figure 1)
Components
Functional Description
1. R
i
The inverting input resistance, along with R
f, set the closed-loop gain. Ri, along with Ci, form a high
pass filter with f
c = 1/(2
πR
iCi).
2. C
i
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
i, along with Ri,
create a highpass filter with f
C = 1/(2
πR
iCi). Refer to the section, Selecting Proper External
Components, for an explanation of determining the value of C
i.
3. R
f
The feedback resistance, along with R
i, set closed-loop gain.
4. C
S
This is the supply bypass capacitor. It provides power supply filtering. Refer to the Application
Information section for proper placement and selection of the supply bypass capacitor.
5. C
B
This is the BYPASS pin capacitor. It provides half-supply filtering. Refer to the section, Selecting
Proper External Components, for information concerning proper placement and selection of C
B.
6. C
O
This is the output coupling capacitor. It blocks the DC voltage at the amplifier’s output and forms a high
pass filter with R
L at fO = 1/(2
πR
LCO)
LM4809
www.national.com
4
相關(guān)PDF資料
PDF描述
LM4809M 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
LM4810MA/NOPB 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
LM4810LD/NOPB 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO8
LM4810M 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
LM4816MT/NOPB 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4809LDX 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
LM4809LDX/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
LM4809LQ 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
LM4809LQ/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
LM4809LQBD 功能描述:音頻 IC 開發(fā)工具 LM4809LQ EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
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