參數(shù)資料
型號(hào)： LM4908LQ/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻／視頻放大
英文描述： 0.157 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC8
封裝： LLP-8
文件頁(yè)數(shù)： 16/21頁(yè)
文件大?。?/td> 935K
代理商： LM4908LQ/NOPB
Electrical Characteristics (Notes 2, 3) (Continued)
The following specifications apply for V
DD = 5V unless otherwise specified, limits apply to TA = 25C.
Symbol
Parameter
Conditions
LM4908
Units
(Limits)
Typ
Limit
C
L
Load Capacitance
200
pF
SR
Slew Rate
Unity Gain Inverting
3
V/s
Electrical Characteristics (Notes 2, 3)
The following specifications apply for V
DD = 3.3V unless otherwise specified, limits apply to TA = 25C.
Symbol
Parameter
Conditions
Units
(Limits)
Typ
Limit
I
DD
Supply Current
V
IN = 0V, IO = 0A
1.4
mA (max)
V
OS
Input Offset Voltage
V
IN = 0V
5
mV (max)
P
o
Output Power
THD+N = 0.1%,f=1kHz
R
L =16
43
mW
R
L =32
30
mW
THD+N = 10%,f=1kHz
R
L =16
61
mW
R
L =32
41
mW
Electrical Characteristics (Notes 2, 3)
The following specifications apply for V
DD = 2.6V unless otherwise specified, limits apply to TA = 25C.
Symbol
Parameter
Conditions
Units
(Limits)
Typ
Limit
I
DD
Supply Current
V
IN = 0V, IO = 0A
1.3
mA (max)
V
OS
Input Offset Voltage
V
IN = 0V
5
mV (max)
P
o
Output Power
THD+N = 0.1%,f=1kHz
R
L =16
20
mW
R
L =32
16
mW
THD+N = 10%,f=1kHz
R
L =16
34
mW
R
L =32
24
mW
Note 2: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 3: 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 and AC 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 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature TA. The maximum
allowable power dissipation is PDMAX =(TJMAX TA)/ θJA. For the LM4908, TJMAX = 150C, and the typical junction-to-ambient thermal resistance, when board
mounted, is 210C/W for package MUA08A and 170C/W for package M08A.
Note 5: Human body model, 100pF discharged through a 1.5k
resistor.
Note 6: Machine Model, 220pF–240pF discharged through all pins.
Note 7: Typicals are measured at 25C and represent the parametric norm.
Note 8: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level). Datasheet min/max specification limits are guaranteed by design, test,
or statistical analysis.
Note 9: The given
θJA is for an LM4908 packaged in an LQB08A with 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 LM4908 packaged in an LQB08A with the Exposed-DAP not soldered to any printed circuit board copper.
LM4908
www.national.com
4
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