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參數(shù)資料
| 型號： | LM4904 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:4; Connector Shell Size:32; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| 中文描述： | 1瓦音頻功率放大器 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 670K |
| 代理商： | LM4904 |
Electrical Characteristics V
DD
= 2.6V
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T
A
= 25C.
(Notes 1, 2)
Symbol
Parameter
Conditions
LM4904
Units
(Limits)
Typical
(Note 6)
2.0
3.0
0.1
1.0
0.9
5
Limit
(Notes 7, 9)
I
DD
Quiescent Power Supply Current
V
IN
= 0V, I
o
= 0A, No Load
V
IN
= 0V, I
o
= 0A, 8
Load
V
SD
= V
DD
(Note 8)
mA (max)
mA (max)
μA (max)
V (min)
V (max)
mV (max)
k
(max)
k
(min)
I
SD
V
SDIH
V
SDIL
V
OS
R
OUT
Shutdown Current
Shutdown Voltage Input High
Shutdown Voltage Input Low
Output Offset Voltage
50
9.7
7.0
Resistor Output to GND (Note 10)
8.5
P
o
Output Power ( 8
)
THD = 1% (max); f = 1 kHz
THD = 1% (max); f = 1 kHz
275
340
70
0.1
mW
( 4
)
T
WU
THD+N
Wake-up time
Total Harmonic Distortion+Noise
mS (max)
%
P
o
= 0.15 Wrms; f = 1kHz
V
ripple
= 200mV sine p-p
Input terminated with 10
PSRR
Power Supply Rejection Ratio
51 (f =
217Hz)
51 (f = 1kHz)
dB (min)
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
,
θ
, and the ambient temperature T
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
–T
A
)/
θ
JA
or the number given inAbsolute Maximum Ratings, whichever is lower. For the LM4904, see power derating
curves for additional 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:
Typicals are measured at 25C and represent the parametric norm.
Note 7:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8:
For micro SMD only, shutdown current is measured in a Normal Room Environment. Exposure to direct sunlight will increase I
SD
by a maximum of 2μA.
Note 9:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 10:
R
ROUT
is measured from the output pin to ground. This value represents the parallel combination of the 10k
output resistors and the two 20k
resistors.
Note 11:
If the product is in Shutdown mode and V
DD
exceeds 6V (to a max of 8V V
DD
), then most of the excess current will flow through the ESD protection circuits.
If the source impedance limits the current to a max of 10mA, then the device will be protected. If the device is enabled when V
DD
is greater than 5.5V and less than
6.5V, no damage will occur, although operation life will be reduced. Operation above 6.5V with no current limit will result in permanent damage.
Note 12:
All bumps have the same thermal resistance and contribute equally when used to lower thermal resistance. The LM4904ITL demo board (views featured
in the
Application Information
section) has two inner layers, one for V
DD
and one for GND. The planes each measure 600mils x 600mils (15.24mm x 15.24mm)
and aid in spreading heat due to power dissipation within the IC.
Note 13:
Maximum power dissipation in the device (P
DMAX
) occurs at an output power level significantly below full output power. P
DMAX
can be calculated using
Equation 1 shown in the
Application Information
section. It may also be obtained from the power dissipation graphs.
L
www.national.com
4
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| LM4905LD/NOPB | 功能描述:IC AMP AUDIO PWR 1.07W MONO 8LLP 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) |
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