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LM4938 bảng dữ liệu(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LM4938
Giải thích chi tiết về linh kiện  Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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Absolute Maximum Ratings (Note 10)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
6.0V
Storage Temperature
-65˚C to +150˚C
Input Voltage
−0.3V to V
DD +0.3V
Power Dissipation (Note 11)
Internally limited
ESD Susceptibility (Note 12)
2000V
ESD Susceptibility (Note 13)
200V
Junction Temperature
150˚C
Soldering Information
Small Outline Package
Vapor Phase (60 sec.)
215˚C
Infrared (15 sec.)
220˚C
See AN-450 “Surface Mounting and their Effects on
Product Reliability” for other methods of soldering surface
mount devices.
θ
JC (typ) - MXA28A
2˚C/W
θ
JA (typ) - MXA28A (exposed DAP) (Note 3)
41˚C/W
θ
JA (typ) - MXA28A (exposed DAP) (Note 4)
54˚C/W
θ
JA (typ) - MXA28A (exposed DAP) (Note 5)
59˚C/W
θ
JA (typ) - MXA28A (exposed DAP) (Note 6)
93˚C/W
Operating Ratings
Temperature Range
T
MIN
≤ T
A
≤T
MAX
−20˚C
≤TA ≤ 85˚C
Supply Voltage
2.7V
≤ V
DD
≤ 5.5V
Electrical Characteristics for Entire IC (Notes 7, 10)
The following specifications apply for V
DD = 5V unless otherwise noted. Limits apply for TA = 25˚C.
Symbol
Parameter
Conditions
LM4938
Units
(Limits)
Typical
(Note 14)
Limit
(Note 15)
V
DD
Supply Voltage
2.7
V (min)
5.5
V (max)
I
DD
Quiescent Power Supply Current
V
IN = 0V, IO = 0A
11
30
mA (max)
I
SD
Shutdown Current
V
shutdown =VDD
0.5
2.0
µA (max)
V
IH
Headphone Sense High Input Voltage
4
V (min)
V
IL
Headphone Sense Low Input Voltage
0.8
V (max)
Electrical Characteristics for Volume Attenuators (Notes 7, 10)
The following specifications apply for V
DD = 5V. Limits apply for TA = 25˚C.
Symbol
Parameter
Conditions
LM4938
Units
(Limits)
Typical
(Note 14)
Limit
(Note 15)
C
RANGE
Attenuator Range
Gain accuracy with V
DCVol = 5V,
No Load
±0.5
±0.75
dB (max)
Gain accuracy with V
DCVol < 0.5V,
No Load
±2
dB (max)
Attenuation with V
DCVol =0V
(BM & SE)
89
75
dB (min)
A
M
Mute Attenuation
V
mute = 5V, Bridged Mode (BM)
89
78
dB (min)
V
mute = 5V, Single-Ended Mode (SE)
78
dB (min)
Electrical Characteristics for Bridged Mode Operation (Notes 7, 10)
The following specifications apply for V
DD = 5V, unless otherwise noted. Limits apply for TA = 25˚C.
Symbol
Parameter
Conditions
LM4938
Units
(Limits)
Typical
(Note 14)
Limit
(Note 15)
V
OS
Output Offset Voltage
V
IN = 0V, No Load
5
±50
mV (max)
www.national.com
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