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參數(shù)資料
| 型號(hào)： | LM4732TA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Stereo 50W Audio Power Amplifier with Mute |
| 中文描述： | 50 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM27 |
| 封裝： | PLASTIC, TO-220, 27 PIN |
| 文件頁數(shù)： | 4/22頁 |
| 文件大?。?/td> | 861K |
| 代理商： | LM4732TA |
Electrical Characteristics
(Notes 1, 2) (Continued)
Note 3:
The maximum power dissipation must be de-rated at elevated temperatures and is dictated by T
JMAX
,
θ
JC
, and the ambient temperature T
A
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
-T
A
)/
θ
JC
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4732, T
JMAX
= 150C
and the typical
θ
JC
is 0.8C/W. Refer to the Thermal Considerations section for more information.
Note 4:
Human body model, 100pF discharged through a 1.5k
resistor.
Note 5:
Machine Model: a 220pF - 240pF discharged through all pins.
Note 6:
Typical specifications are measured 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:
The maximum operating junction temperature is 150C. However, the instantaneous Safe Operating Area temperature is 250C.
Note 10:
V
-
must have at least - 9V at its pin with reference to GND in order for the under-voltage protection circuitry to be disabled. In addition, the voltage
differential between V
and V
must be greater than 14V.
Note 11:
Cross talk performance was measured using the demo board shown in the datasheet. PCB layout will affect cross talk. It is recommended that input and
output traces be separated by as much distance as possible. Return ground traces from outputs should be independent back to a single ground point and use as
wide of traces as possible.
Note 12:
The Differential Input Voltage Absolute Maximum Rating is based on supply voltages V
+
= 40V and V
-
= - 40V.
Note 13:
The TA27A is a non-isolated package. The package’s metal back, and any heat sink to which it is mounted are connected to the V
-
potential when using
only thermal compound. If a mica washer is used in addition to thermal compound,
θ
CS
(case to sink) is increased, but the heat sink will be electrically isolated from
V
.
Note 14:
CCIR/ARM:
A Practical Noise Measurement Method;
by Ray Dolby, David Robinson and Kenneth Gundry, AES Preprint No. 1353 (F-3).
L
www.national.com
4
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