參數(shù)資料
型號(hào)： LM4665ITL
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻／視頻放大
英文描述： Filterless High Efficiency 1W Switching Audio Amplifier
中文描述： 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9
封裝： MICRO, SMD-9
文件頁(yè)數(shù)： 4/18頁(yè)
文件大小： 1018K
代理商： LM4665ITL
Electrical Characteristics V
DD
= 3V
The following specifications apply for V
= 3V, and R
L
= 8
+ 33μH, measurement bandwidth is
<
10Hz - 22kHz unless oth-
erwise specified. Limits apply for T
A
= 25C.
(Notes 1, 2)
Symbol
Parameter
Conditions
LM4665
Units
(Limits)
Typical
(Note 6)
3.0
3.5
0.01
1.0
0.8
1.0
0.8
1.0
0.8
Limit
(Notes 7, 8)
7.0
I
DD
Quiescent Power Supply Current
V
IN
= 0V, No Load
V
IN
= 0V, 8
+ 22μH Load
V
SD
= V
SD Mode
(Note 9)
V
SD Mode
= V
DD
V
SD Mode
= V
DD
V
SD Mode
= GND
V
SD Mode
= GND
mA (max)
mA
μA (max)
V (min)
V (max)
V (min)
V (max)
V (min)
V (max)
dB (min)
dB (max)
dB (min)
dB (max)
mV
ms
mW (min)
% (max)
k
k
I
SD
V
SDIH
V
SDIL
V
SDIH
V
SDIL
V
GSIH
V
GSIL
Shutdown Current
Shutdown Voltage Input High
Shutdown Voltage Input Low
Shutdown Voltage Input High
Shutdown Voltage Input Low
Gain Select Input High
Gain Select Input Low
5.0
1.4
0.4
1.4
0.4
1.4
0.4
5.5
6.5
11.5
12.5
A
V
Closed Loop Gain
V
Gain Select
= V
DD
6
A
V
Closed Loop Gain
V
Gain Select
= GND
12
V
OS
T
WU
P
o
THD+N
Output Offset Voltage
Wake-up Time
Output Power
Total Harmonic Distortion+Noise
10
5
400
0.4
100
65
THD+N = 2% (max), f
IN
= 1kHz
P
O
= 100mW
RMS
, f
IN
= 1kHz
V
Gain Select
= V
DD
, Gain = 6dB
V
Gain Select
= GND, Gain = 12dB
V
Ripple
= 100mV
RMS
,
f
Ripple
= 217Hz, A
V
= 6dB,
Inputs Terminated
V
Ripple
= 100mV
RMS
,
f
Ripple
= 217Hz, A
V
= 6dB
A-Weighted filter, V
IN
= 0V
350
R
IN
Differential Input Resistance
PSRR
Power Supply Rejection Ratio
52
dB
CMRR
Common Mode Rejection Ratio
39
dB
e
N
Output Noise Voltage
350
μV
Note 1:
All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2:
Absolute Maximum Ratings
indicate limits beyond which damage to the device may occur.
Operating Ratings
indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Electrical Characteristics
state DC andAC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 3:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX
,
θ
JA
, and the ambient temperature T
A
. The maximum
allowable power dissipation is P
= (T
–T
)/
θ
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4665, T
JMAX
= 150C.
See the
Efficiency and Power Dissipation versus Output Power
curves for more information.
Note 4:
Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 5:
Machine Model, 220 pF–240 pF discharged through all pins.
Note 6:
Typical specifications are specified at 25C and represent the parametric norm.
Note 7:
Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9:
Shutdown current is measured in a normal room environment. Exposure to direct sunlight will increase I
SD
by a maximum of 2μA. The Shutdown Mode pin
should be connected to V
DD
or GND and the Shutdown pin should be driven as close as possible to V
DD
or GND for minimum shutdown current and the best THD
performance in PLAY mode. See the
Application Information
section under SHUTDOWN FUNCTION for more information.
Note 10:
The exposed-DAP of the LDA10B package should be electrically connected to GND.
Note 11:
The LM4665 in the micro SMD package (ITL) has an operating range of 2.7V - 3.8V for 8
speaker loads. The supply range may be increased as speaker
impedance is increased. It is not recommended that 4
loads be used with the micro SMD package. To increase the supply voltage operating range, see Figure 2
and INCREASING SUPPLY VOLTAGE RANGE in the
Application Information
section for more information.
External Components Description
(
Figure 1
)
Components
1.
Functional Description
C
S
Supply bypass capacitor which provides power supply filtering. Refer to the
Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
L
www.national.com
4
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4665ITL/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
LM4665ITLX 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Filterless High Efficiency 1W Switching Audio Amplifier
LM4665LD 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Filterless High Efficiency 1W Switching Audio Amplifier
LM4665LD/NOPB 功能描述:IC AMP AUDIO 1.4W MONO AB 10LLP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR)
LM4665LDX 制造商:ROCHESTER 制造商全稱:ROCHESTER 功能描述:NATIONALa??S AUDIO AMPLIFIER now featuring RoHS compliancy Audio Amplifier
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