參數(shù)資料
型號(hào)： LM4842MH
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻控制
英文描述： Stereo 2W Amplifiers with DC Volume Control Transient Free Outputs, and Cap-less Headphone Drive
中文描述： 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
封裝： TSSOP-28
文件頁數(shù)： 4/31頁
文件大?。?/td> 1306K
代理商： LM4842MH
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 10)
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (Note 11)
ESD Susceptibility (Note 12)
All pins except Pin 28
Pin 28
ESD Susceptibility (Note 13)
Junction Temperature
Soldering Information
Vapor Phase (60 sec.)
Infrared (15 sec.)
See AN-450 “Surface Mounting and their Effects on
Product Reliability” for other methods of soldering surface
mount devices.
6.0V
-65C to +150C
0.3V to V
DD
+0.3V
Internally limited
2500V
6500V
200V
150C
215C
220C
θ
JC
(typ)—LQA028A
θ
JA
(typ)—LQA028A
θ
JC
(typ)—MTC28
θ
JA
(typ)—MTC28
θ
JC
(typ)—MXA28A
θ
JA
(typ)—MXA28A (exposed
DAP) (Note 4)
θ
JA
(typ)—MXA28A (exposed
DAP) (Note 3)
θ
JA
(typ)—MXA28A (exposed
DAP) (Note 5)
θ
JA
(typ)—MXA28A (exposed
DAP) (Note 6)
3C/W
42C/W
20C/W
80C/W
2C/W
41C/W
54C/W
59C/W
93C/W
Operating Ratings
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage
40C
≤
TA
≤
85C
2.7V
≤
V
DD
≤
5.5V
Electrical Characteristics for Entire IC
(Notes 7, 10)
The following specifications apply for V
DD
= 5V and T
A
= 25C unless otherwise noted.
Symbol
Parameter
Conditions
LM4842
Units
(Limits)
Typical
(Note 14)
Limit
(Note 15)
2.7
5.5
30
2.0
0.8 x V
DD
0.2 x V
DD
10
40
V
DD
Supply Voltage
V (min)
V (max)
mA (max)
μA (max)
V (min)
V (max)
mV
RMS
mV
RMS
I
DD
I
SD
V
IH
V
IL
TH
um
Quiescent Power Supply Current
Shutdown Current
VIN High on all Logic Inputs
VIN Low on all Logic Inputs
Un-Mute Threshold Voltage
V
IN
= 0V, I
O
= 0A
V
Shutdown
= GND
15
0.7
V
Shutdown
= V
DD
,
Gain 1st Stage = 1
22
Electrical Characteristics for Volume Attenuators
(Notes 7, 10)
The following specifications apply for V
DD
= 5V and T
A
= 25C unless otherwise noted.
Symbol
Parameter
Conditions
LM4842
Units
(Limits)
Typical
(Note 14)
Limit
(Note 15)
±
0.75
-75
C
RANGE
C
RANGE
Attenuator Range
Attenuator Range
Gain with V
DCVol
= 5.0V, No Load
Attenuation with V
DCVol
= 0V (BM &
SE)
V
mute
= 5V, Bridged Mode (BM)
V
mute
= 5V, Single-Ended Mode (SE)
dB (max)
dB (min)
A
M
Mute Attenuation
-78
-78
dB (min)
dB (min)
Electrical Characteristics for Single-Ended Mode Operation
(Notes 7, 10)
The following specifications apply for V
DD
= 5V and T
A
= 25C unless otherwise noted.
Symbol
Parameter
Conditions
LM4842
Units
(Limits)
Typical
(Note 14)
85
95
Limit
(Note 15)
P
O
Output Power
THD+N = 1.0%; f = 1kHz; R
L
= 32
THD+N = 10%; f = 1 kHz; R
L
= 32
mW
mW
L
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