參數(shù)資料
型號(hào)： LM4838ITL
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻控制
英文描述： Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
中文描述： 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PBGA36
封裝： MICRO, SMD-36
文件頁數(shù)： 5/36頁
文件大?。?/td> 2085K
代理商： LM4838ITL
Electrical Characteristics for Single-Ended Mode Operation
(Notes 7,
10) (Continued)
The following specifications apply for V
DD
= 5V. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4838
Units
(Limits)
Typical
(Note 14)
0.065
Limit
(Note 15)
THD+N
Total Harmonic Distortion+Noise
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
%
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, unless otherwise noted. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4838
Units
(Limits)
Typical
(Note 14)
5
2.2
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)
THD = 1% (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
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 1
.
Note 8:
When driving 3
loads from a 5V supply the LM4838LQ, LM4838ITL and LM4838MTE must be mounted to the circuit board and forced-air cooled.
Note 9:
When driving 4
loads from a 5V supply the LM4838LQ, LM4838ITL and LM4838MTE must be mounted 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 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 11:
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
= (T
T
A
)/
θ
JA
. For the LM4838, T
JMAX
= 150C, and the typical junction-to-ambient thermal resistance for each package
can be found in the
Absolute Maximum Ratings
section above.
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.
Note 15:
Limits are guaranteed to National’s AOQL ( Average Outgoing Quality Level). Datasheet min/max specification limits are guaranteed by design, test, or
statistical analysis.
L
www.national.com
5
相關(guān)PDF資料
PDF描述
LM4838ITLX Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
LM4839 Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
LM4839MT Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
LM4839LQ Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
LM4839MTE Stereo 2W Audio Power Amplifiers with DC Volume Control, Bass Boost, and Input Mux
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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LM4838ITLX 制造商:Rochester Electronics LLC 功能描述:- Bulk
LM4838LQ 制造商:Texas Instruments 功能描述:AMP AUDIO POWER DC VOLT LLP-28
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