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LM4808LD

产品描述0.15W, 2 CHANNEL, AUDIO AMPLIFIER, DSO8, LLP-8
产品类别模拟混合信号IC    消费电路   
文件大小1MB,共21页
制造商Rochester Electronics
官网地址https://www.rocelec.com/
标准  
下载文档 详细参数 全文预览

LM4808LD概述

0.15W, 2 CHANNEL, AUDIO AMPLIFIER, DSO8, LLP-8

LM4808LD规格参数

参数名称属性值
是否无铅不含铅
厂商名称Rochester Electronics
零件包装代码SOIC
包装说明LLP-8
针数8
Reach Compliance Codeunknown
标称带宽20 kHz
商用集成电路类型AUDIO AMPLIFIER
JESD-30 代码S-XDSO-N8
JESD-609代码e0
长度2.5 mm
湿度敏感等级1
信道数量2
功能数量1
端子数量8
最高工作温度85 °C
最低工作温度-40 °C
标称输出功率0.15 W
封装主体材料UNSPECIFIED
封装代码VSON
封装形状SQUARE
封装形式SMALL OUTLINE, VERY THIN PROFILE
峰值回流温度(摄氏度)235
认证状态COMMERCIAL
座面最大高度0.8 mm
最大供电电压 (Vsup)5.5 V
最小供电电压 (Vsup)2 V
表面贴装YES
温度等级INDUSTRIAL
端子面层TIN LEAD
端子形式NO LEAD
端子节距0.5 mm
端子位置DUAL
处于峰值回流温度下的最长时间30
宽度2.5 mm

LM4808LD文档预览

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LM4808 Dual 105 mW Headphone Amplifier
August 2001
LM4808
Dual 105 mW Headphone Amplifier
General Description
The LM4808 is a dual audio power amplifier capable of
delivering 105mW per channel of continuous average power
into a 16Ω load with 0.1% (THD+N) from a 5V power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components using surface mount packaging. Since
the LM4808 does not require bootstrap capacitors or snub-
ber networks, it is optimally suited for low-power portable
systems.
The unity-gain stable LM4808 can be configured by external
gain-setting resistors.
Key Specifications
n
THD+N at 1kHz at 105mW continuous average output
power into 16Ω
0.1% (typ)
n
THD+N at 1kHz at 70mW continuous average output
power into 32Ω
0.1% (typ)
n
Output power at 0.1% THD+N at 1kHz into 32Ω 70mW
(typ)
Features
n
n
n
n
n
LLP, MSOP, and SOP surface mount packaging
Switch on/off click suppression
Excellent power supply ripple rejection
Unity-gain stable
Minimum external components
Applications
n
Headphone Amplifier
n
Personal Computers
n
Portable electronic devices
Typical Application
10127601
*Refer to the
Application Information
Section for information concerning proper selection of the input and output coupling capacitors.
FIGURE 1. Typical Audio Amplifier Application Circuit
Boomer
®
is a registered trademark of National Semiconductor Corporation.
© 2001 National Semiconductor Corporation
DS101276
www.national.com
LM4808
Connection Diagrams
LLP Package
10127657
Top View
Order Number LM4808LD
See NS Package Number LDA08B
SOP & MSOP Package
10127602
Top View
Order Number LM4808M, LM4808MM
See NS Package Number M08A, MUA08A
www.national.com
2
LM4808
Absolute Maximum Ratings
(Note 3)
θ
JC
(MSOP)
θ
JA
(MSOP)
θ
JC
(SOP)
θ
JA
(SOP)
θ
JC
(LLP)
θ
JA
(LLP)
θ
JA
(LLP)
56˚C/W
210˚C/W
35˚C/W
170˚C/W
15˚C/W
117˚C/W (Note 9)
150˚C/W (Note 10)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (Note 4)
ESD Susceptibility (Note 5)
ESD Susceptibility (Note 6)
Junction Temperature
Soldering Information (Note 1)
Small Outline Package
Vapor Phase (60 seconds)
Infrared (15 seconds)
Thermal Resistance
215˚C
220˚C
6.0V
−65˚C to +150˚C
−0.3V to V
DD
+ 0.3V
Internally limited
3500V
250V
150˚C
Operating Ratings
Temperature Range
T
MIN
T
A
T
MAX
Supply Voltage
−40˚C
T
A
85˚C
2.0V
V
DD
5.5V
Note 1:
See AN-450 “Surface Mounting and their Effects on Product Reli-
ability” for other methods of soldering surface mount devices.
Electrical Characteristics
(Notes 2, 3)
The following specifications apply for V
DD
= 5V unless otherwise specified, limits apply to T
A
= 25˚C.
Symbol
Parameter
Conditions
LM4808
Typ
(Note
Limit
(Note
7)
8)
V
DD
I
DD
P
tot
V
OS
Ibias
V
CM
G
V
Io
R
O
V
O
PSRR
Crosstalk
THD+N
Supply Voltage
Supply Current
Total Power Dissipation
Input Offset Voltage
Input Bias Current
Common Mode Voltage
Open-Loop Voltage Gain
Max Output Current
Output Resistance
Output Swing
Power Supply Rejection Ratio
Channel Separation
Total Harmonic Distortion + Noise
R
L
= 32Ω, 0.1% THD+N, Min
R
L
= 32Ω, 0.1% THD+N, Max
Cb = 1.0µF, Vripple = 100mV
PP
,
f = 100Hz
R
L
= 32Ω
f = 1 kHz
R
L
= 16Ω,
V
O
=3.5V
PP
(at 0 dB)
R
L
= 32Ω,
V
O
=3.5V
PP
(at 0 dB)
SNR
f
G
P
o
Signal-to-Noise Ratio
Unity Gain Frequency
Output Power
V
O
= 3.5V
pp
(at 0 dB)
Open Loop, R
L
= 5kΩ
THD+N = 0.1%, f = 1 kHz
R
L
= 16Ω
R
L
= 32Ω
THD+N = 10%, f = 1 kHz
R
L
= 16Ω
R
L
= 32Ω
C
I
Input Capacitance
3
Units
(Limits)
V (min)
V (max)
mA (max)
mW (max)
mV (max)
pA
V
V
dB
mA
V
dB
dB
%
dB
%
dB
dB
MHz
mW
2.0
5.5
V
IN
= 0V, I
O
= 0A
V
IN
= 0V, I
O
= 0A
V
IN
= 0V
1.2
6
10
10
0
4.3
R
L
= 5kΩ
THD+N
<
0.1 %
67
70
0.1
.3
4.7
89
75
0.05
66
0.05
66
105
5.5
105
70
150
90
3
60
3.0
16.5
50
mW
mW
mW
pF
www.national.com
LM4808
Electrical Characteristics
(Notes 2, 3)
The following specifications apply for V
DD
Symbol
Parameter
(Continued)
= 5V unless otherwise specified, limits apply to T
A
= 25˚C.
Conditions
LM4808
Typ
(Note
Limit
(Note
7)
8)
Units
(Limits)
pF
V/µs
C
L
SR
Load Capacitance
Slew Rate
Unity Gain Inverting
3
200
Electrical Characteristics
(Notes 2, 3)
The following specifications apply for V
DD
= 3.3V unless otherwise specified, limits apply to T
A
= 25˚C.
Symbol
Parameter
Conditions
Conditions
Typ
(Note
Limit
(Note
7)
8)
I
DD
V
OS
P
o
Supply Current
Input Offset Voltage
Output Power
V
IN
= 0V, I
O
= 0A
V
IN
= 0V
THD+N = 0.1%, f = 1 kHz
R
L
= 16Ω
R
L
= 32Ω
THD+N = 10%, f = 1 kHz
R
L
= 16Ω
R
L
= 32Ω
56
38
mW
mW
40
28
mW
mW
1.0
7
Units
(Limits)
mA (max)
mV (max)
Electrical Characteristics
(Notes 2, 3)
The following specifications apply for V
DD
= 2.6V unless otherwise specified, limits apply to T
A
= 25˚C.
Symbol
Parameter
Conditions
Conditions
Typ
(Note
Limit
(Note
7)
8)
I
DD
V
OS
P
o
Supply Current
Input Offset Voltage
Output Power
V
IN
= 0V, I
O
= 0A
V
IN
= 0V
THD+N = 0.1%, f = 1 kHz
R
L
= 16Ω
R
L
= 32Ω
THD+N = 10%, f = 1 kHz
R
L
= 16Ω
R
L
= 32Ω
Note 2:
All voltages are measured with respect to the ground pin, unless otherwise 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 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 4:
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
. For the LM4808, T
JMAX
= 150˚C, and the typical junction-to-ambient thermal resistance, when board
mounted, is 210˚C/W for package MUA08A and 170˚C/W for package M08A.
Note 5:
Human body model, 100 pF discharged through a 1.5 kΩ resistor.
Note 6:
Machine Model, 220 pF–240 pF discharged through all pins.
Note 7:
Typicals are measured at 25˚C and represent the parametric norm.
Note 8:
Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level). Datasheet min/max specification limits are guaranteed by design, test,
or statistical analysis.
Note 9:
The given
θ
JA
is for an LM4808 packaged in an LDA08B with the Exposed-DAP soldered to a printed circuit board copper pad with an area equivalent to
that of the Exposed-DAP itself.
Note 10:
The given
θ
JA
is for an LM4808 packaged in an LDA08B with the Exposed-DAP not soldered to any printed circuit board copper.
Units
(Limits)
mA (max)
mV (max)
mW
mW
mW
mW
0.9
5
20
16
31
22
www.national.com
4

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