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參數(shù)資料
| 型號： | LM4849 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Stereo 2W Audio Power Amplifiers with DC Volume Control and Input Mux |
| 中文描述： | 立體聲2W的音頻功率放大器直流音量控制和輸入復(fù)用器 |
| 文件頁數(shù)： | 3/19頁 |
| 文件大小： | 690K |
| 代理商： | LM4849 |
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
LM4849
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)
THD = 1.5% (max);f = 1 kHz;
R
L
= 8
THD+N = 10%;f = 1 kHz; R
L
= 8
P
O
= 1W, f = 1kHz,
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
0.2
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
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 LM4849MH exposed DAP must be soldered to the circuit board and forced-air cooled.
Note 9:
When driving 4
loads from a 5V supply the LM4849MH 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 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
DMAX
= (T
JMAX
T
A
)/
θ
JA
.
Note 12:
Human body model, 100pF discharged through a 1.5k
resistor.
Note 13:
Machine Model, 220pF–240pF discharged through all pins.
Note 14:
Typicals are measured at 25C and represent the parametric norm.
Note 15:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. Limits are guaranteed to National’sAOQL (Average Outgoing
Quality Level).
L
www.national.com
3
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LM4849MH | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 2W Audio Power Amplifiers with DC Volume Control and Input Mux |
| LM4849MH/NOPB | 功能描述:IC AMP AUDIO PWR 2.2W AB 28TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 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:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4849MHX/NOPB | 功能描述:IC AMP AUDIO PWR 2.2W AB 28TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 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:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4850 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Mono 1.5 W / Stereo 300 mW Power Amplifier |
| LM4850A E WAF | 制造商:Texas Instruments 功能描述: |
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