參數(shù)資料
型號(hào)： LM4839MT
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 音頻控制
英文描述： Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
中文描述： 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
封裝： TSSOP-28
文件頁(yè)數(shù)： 4/34頁(yè)
文件大?。?/td> 1104K
代理商： LM4839MT
Electrical Characteristics for Single-Ended Mode Operation
(Notes 7, 10)
The following specifications apply for V
DD
= 5V and T
A
= 25C unless otherwise noted.
Symbol
Parameter
Conditions
LM4839
Units
(Limits)
Typical
(Note 14)
85
Limit
(Note 15)
P
O
Output Power
THD+N = 1.0%; f = 1kHz;
R
L
= 32
THD+N = 10%; f = 1 kHz; R
L
=
32
V
OUT
= 1V
RMS
, f=1kHz, R
L
= 10k
,
A
VD
= 1
C
B
= 1.0 μF, f =120 Hz,
V
RIPPLE
= 200 mVrms
P
OUT
=75 mW, R
L
= 32
, A-Wtd
Filter
f=1kHz, C
B
= 1.0 μF
mW
95
mW
THD+N
Total Harmonic Distortion+Noise
0.065
%
PSRR
Power Supply Rejection Ratio
58
dB
SNR
Signal to Noise Ratio
102
dB
X
talk
Channel Separation
65
dB
Electrical Characteristics for Bridged Mode Operation
(Notes 7, 10)
The following specifications apply for V
DD
= 5V and T
A
= 25C unless otherwise noted.
Symbol
Parameter
Conditions
LM4839
Units
(Limits)
Typical
(Note 14)
Limit
(Note 15)
±
50
V
OS
P
O
Output Offset Voltage
Output Power
V
IN
= 0V, No Load
THD + N = 1.0%; f=1kHz; R
L
= 3
(Note 8)
THD + N = 1.0%; f=1kHz; R
L
= 4
(Note 9)(Note 15)
THD = 1.5% (max);f = 1 kHz;
R
L
= 8
THD+N = 10%;f = 1 kHz; R
L
= 8
P
O
= 1W, 20 Hz
<
f
<
20 kHz,
R
L
= 8
, A
VD
= 2
P
O
= 340 mW, R
L
= 32
C
B
= 1.0 μF, f = 120 Hz,
V
RIPPLE
= 200 mVrms; R
L
= 8
V
DD
= 5V, P
OUT
= 1.1W, R
L
= 8
,
A-Wtd Filter
f=1kHz, C
B
= 1.0 μF
mV (max)
W
2.2
2
W
1.1
1.0
W (min)
1.5
0.3
W
%
THD+N
Total Harmonic Distortion+Noise
1.0
74
%
dB
PSRR
Power Supply Rejection Ratio
SNR
Signal to Noise Ratio
93
dB
X
talk
Channel Separation
70
dB
Note 3:
The
θ
JA
given is for an MXA28A package whose exposed-DAP is soldered to an exposed 2in
2
piece of 1 ounce printed circuit board copper.
Note 4:
The
θ
JA
given is for an MXA28A package whose exposed-DAP is soldered to a 2in
2
piece of 1 ounce printed circuit board copper on a bottom side layer
through 21 8mil vias.
Note 5:
The
θ
JA
given is for an MXA28A package whose exposed-DAP is soldered to an exposed 1in
2
piece of 1 ounce printed circuit board copper.
Note 6:
The
θ
JA
given is for an MXA28A package whose exposed-DAP is not soldered to any copper.
Note 7:
All voltages are measured with respect to the ground pins, unless otherwise specified. All specifications are tested using the typical application as shown
in Figure 2.
Note 8:
When driving 3
loads from a 5V supply the LM4839MTE exposed DAP must be soldered to the circuit board and forced-air cooled.
Note 9:
When driving 4
loads from a 5V supply the LM4839MTE exposed DAP must be soldered to the circuit board.
Note 10:
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 Characteristicsstate 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 11:
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
= (T
T
A
)/
θ
JA
. For the LM4839MT, T
JMAX
= 150C, and the typical junction-to-ambient thermal resistance, when board
mounted, is 80C/W assuming the MTC28 package.
Note 12:
Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 13:
Machine Model, 220 pF–240 pF discharged through all pins.
Note 14:
Typicals are measured at 25C and represent the parametric norm.
L
www.national.com
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LM4839MTBD 功能描述:BOARD EVALUATION LM4839MT RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 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:1 系列:-
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LM4840 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Stereo 2W Audio Power Amplifiers with Digital Volume Control and Input Mux
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