參數(shù)資料
型號(hào)： LM4808
廠商： National Semiconductor Corporation
英文描述： Dual 105 mW Headphone Amplifier
中文描述： 雙105毫瓦耳機(jī)放大器
文件頁(yè)數(shù)： 3/13頁(yè)
文件大?。?/td> 674K
代理商： LM4808
Electrical Characteristics
(Notes 2, 3)
The following specifications apply for V
DD
= 3.3V unless otherwise specified, limits apply to T
A
= 25C.
Symbol
Parameter
Conditions
Conditions
Units (Limits)
Typ
(Note 7)
1.0
7
Limit
(Note 8)
I
DD
V
OS
P
o
Supply Current
Input Offset Voltage
Output Power
V
IN
= 0V, I
O
= 0A
V
IN
= 0V
THD+N = 0.1%, f = 1 kHz
R
L
= 16
R
L
= 32
THD+N = 10%, f = 1 kHz
R
L
= 16
R
L
= 32
mA (max)
mV (max)
40
28
mW
mW
56
38
mW
mW
Electrical Characteristics
(Notes 2, 3)
The following specifications apply for V
DD
= 2.6V unless otherwise specified, limits apply to T
A
= 25C.
Symbol
Parameter
Conditions
Conditions
Units (Limits)
Typ
(Note 7)
0.9
5
Limit
(Note 8)
I
DD
V
OS
P
o
Supply Current
Input Offset Voltage
Output Power
V
IN
= 0V, I
O
= 0A
V
IN
= 0V
THD+N = 0.1%, f = 1 kHz
R
L
= 16
R
L
= 32
THD+N = 10%, f = 1 kHz
R
L
= 16
R
L
= 32
mA (max)
mV (max)
20
16
mW
mW
31
22
mW
mW
Note 2:
All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 3:
Absolute Maximum Ratingsindicate limits beyond which damage to the device may occur. Operating Ratingsindicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristicsstate DC andAC electrical specifications under particular test conditions which guar-
antee 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 T
JMAX
,
θ
JA
, and the ambient temperature T
A
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
T
A
) /
θ
JA
. For the LM4808, T
JMAX
= 150C, and the typical junction-to-ambient thermal resistance, when board
mounted, is 210C/W for the MSOP Package and 107C/W for package N08E.
Note 5:
Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 6:
Machine Model, 220 pF–240 pF discharged through all pins.
Note 7:
Typicals are measured at 25C and represent the parametric norm.
Note 8:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
L
www.national.com
3
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