參數(shù)資料
型號: LM4834
廠商: National Semiconductor Corporation
英文描述: 1.75W Audio Power Amplifier with DC Volume Control and Microphone Preamp
中文描述: 1.75W音頻功率放大器直流音量控制和麥克風(fēng)前置放大器
文件頁數(shù): 2/12頁
文件大?。?/td> 443K
代理商: LM4834
Absolute Maximum Ratings
(Note 2)
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
ESD Susceptibility (Note 4)
Pin 5
ESD Susceptibility (Note 5)
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
1500V
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.
θ
JC
(typ)— MSA028CB
θ
JA
(typ)— MSA028CB
220C
29C/W
95C/W
Operating Ratings
Temperature Range
T
MIN
T
A
T
MAX
Supply Voltage
40C
TA
85C
4.5
V
DD
5.5V
Electrical Characteristics for Entire IC
(Notes 1, 2)
The following specifications apply for V
DD
= 5V unless otherwise noted. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4834
Units
(Limits)
Typical
(Note 6)
Limit
(Note 7)
4.5
5.5
26
2.0
V
DD
Supply Voltage
V (min)
V (max)
mA (max)
μA (max)
I
DD
I
SD
Quiescent Power Supply Current
Shutdown Current
V
IN
= 0V, I
O
= 0A
V
pin13
= V
DD
17.5
0.6
Electrical Characteristics for Volume Attenuators
(Notes 1, 2)
The following specifications apply for V
DD
= 5V. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4834
Units
(Limits)
Typical
(Note 6)
2.6
-75
-92
-92
Limit
(Note 7)
3.65
-88
-105
-105
C
RANGE
Attenuator Range
Gain with V
pin 22
= 5V
Attenuation with V
pin 22
= 0V
V
pin 15
= 5V, Sum Out
V
pin 15
= 5V, Line Out/Headphone
Amp
dB (max)
dB (min)
dB (max)
dB (max)
A
M
Mute Attenuation
Electrical Characteristics for Microphone Preamp and Power Supply
(Notes 1, 2)
The following specifications apply forV
DD
= 5V unless otherwise noted. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4834
Units
(Limits)
Typical
(Note 6)
0.9
123
Limit
(Note 7)
V
OS
SNR
Offset Voltage
Signal to Noise Ratio
V
IN
= 0V
V
DD
= 5V, R
L
= 1k, f = 1 kHz, V
OUT
=
4.7V, A-Wtd Filter
f = 1 kHz, THD
<
1.0%, R
L
= 1 k
A-Weighted Filter
f = 120 Hz, V
RIPPLE
= 200 mVrms,
C
B
=1μF
R
L
= 1 k
, Bias In = 2.5V
mV
dB
V
SWING
E
NO
PSRR
Output Voltage Swing
Input Referred Noise
Power Supply Rejection Ratio
4.72
1.2
28
V
μV
dB
V
S
Mic Power Supply
2.5
2.5
V (min)
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