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參數(shù)資料
| 型號： | LM4874 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 2.1W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown |
| 中文描述： | 2.1W差分輸入，BTL輸出立體聲音頻放大器可選增益和關(guān)機 |
| 文件頁數(shù)： | 3/21頁 |
| 文件大小： | 869K |
| 代理商： | LM4874 |
Absolute Maximum Ratings
3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Notes 2,
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (Note 4)
ESD Susceptibility (Note 5)
ESD Susceptibility (Note 6)
Junction Temperature
Soldering Information
Small Outline Package
Vapor Phase (60 sec.)
6.0V
-65C to + 150C
0.3V to V
DD
+ 0.3V
Internally Limited
2000V
200V
150C
215C
Infrared (15 sec.)
See AN-450 “Surface Mounting and their Effects on
Product Reliability” for other methods of soldering surface
mount devices.
Thermal Resistance
θ
JC
(typ) MXA20A
θ
JA
(typ) MXA20A
220C
2C/W
41C/W (Note 7)
Operating Ratings
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage
40C
≤
TA
≤
85C
3.0 V
≤
V
DD
≤
5.5V
Electrical Characteristics for LM4874
(Notes 2, 8)
The following specifications applies to the LM4874 when used in the circuit shown in Figure 1 and operating with V
DD
= 5V and
A
V
= 6dB, unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4874
Units
(Limits)
Typical
(Note 8)
Limit
(Notes 9,
10)
3.0
5.5
12.0
1.0
50
V
DD
Supply Voltage
V (min)
V (max)
mA (max)
μA (max)
mV (max)
dB
I
DD
I
SD
V
OS
PSRR
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Supply Rejection Ratio
V
IN
= 0V, I
O
= 0A, R
L
=
∞
V
shutdown
= GND
9.0
0.1
7
62
V
DD
= 5V, V
RIPPLE
= 200mV
P-P
sinewave, C
BYPASS
= 0.47μF,
R
L
= 8
THD+N = 1% (max), f = 1kHz (Note12)
R
L
= 3
R
L
= 4
R
L
= 8
THD+N = 10% (max), f = 1kHz
(Note12)
R
L
= 3
R
L
= 4
R
L
= 8
20Hz
≤
f
≤
20kHz
R
L
= 4
, P
O
= 2W
R
L
= 8
, P
O
= 1W
f = 1kHz, C
BYPASS
= 0.47μF,
P
O
= 1.1W, R
L
= 8
Pins 5, 7, 9, and 17
P
O
Output Power (Note 11)
2.1
1.9
1.2
1.0
W
W
W (min)
2.6
2.6
1.5
W
W
W
THD+N
Total Harmonic Distortion + Noise
0.3
0.3
97
%
%
dB
S/N
Signal-to-Noise Ratio
R
IN
Input Resistance
See Table 1.
Note 1:
An LM4874MH that has been properly mounted to a circuit board with a copper heatsink area of at least 2in
2
will deliver 1.9W into 4
or 2.1W into 3
.
Note 2:
All voltages are measured with respect to the GND pin unless other wise specified.
Note 3:
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 and AC electrical specifications under particular test conditions that
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 4:
The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX,
θ
, and the ambient temperature, T
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
- T
A
/
θ
JA
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4874, see power derating
currents for more information.
Note 5:
Human body model, 100 pF discharged through a 1.5 k
resistor.
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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|---|---|
| LM4874MH | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:2.1W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown |
| LM4874MH/NOPB | 功能描述:IC AMP AUDIO PWR 2.6W AB 20TSSOP 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，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，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) |
| LM4875 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch |
| LM4875M | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4875M/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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