參數(shù)資料
型號(hào): LM4925
廠商: National Semiconductor Corporation
元件分類: 音頻放大器
英文描述: Single Audio Amplifier
中文描述: 單音頻放大器
文件頁(yè)數(shù): 4/15頁(yè)
文件大小: 1046K
代理商: LM4925
Absolute Maximum Ratings
(Note 1)
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 2)
ESD Susceptibility(Note 3)
ESD Susceptibility (Note 4)
Junction Temperature
Solder Information
Small Outline Package Vapor
Phase (60sec)
3.8V
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 Reliablilty” for other methods of soldering
surface mount devices.
Thermal Resistance
θ
JA
(typ) MUB10A
θ
JA
(typ) LDA10A
220C
175C/W
73C/W
Operating Ratings
Temperature Range
T
MIN
T
A
T
MAX
Supply Voltage
40C
T
A
+85C
1.5V
V
DD
3.6V
Electrical Characteristics V
DD
= 3.0V
(Notes 1, 5)
The following specifications apply for the circuit shown in Figure 2 for Single Ended Outputs (A
V
= 2.5V) and Figure 3
for BTL Outputs (A
V-BTL
= 2), unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4925
Units
(Limits)
Typical
(Note 6)
1.0
0.1
2
Limit
(Note 7)
1.6
1
10
I
DD
I
SD
V
OS
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
V
IN
= 0V, I
O
= 0A, R
L
=
(Note 8)
V
SHUTDOWN
= GND
mA (max)
μA (max)
mV (max)
P
O
Output Power (Note 9)
R
L
= 8
, BTL, Fig. 3,
THD+N = 1%, f = 1kHz
R
L
= 16
, Fig. 2, SE per Channel,
THD+N = 1%, f = 1kHz
R
L
= 8
, BTL, P
O
= 300mW,
Fig. 3, f = 1kHz
R
L
= 16
, SE, P
O
= 20mW per channel,
Fig.2, f = 1kHz
20Hz to 20kHz, A-weighted,
Input Referred,
Single Ended Output, Fig. 2
R
L
= 16
, Fig. 2
V
RIPPLE
= 200mV
P-P
sine wave
C
BYPASS
= 4.7μF, R
L
= 8
f = 100Hz, BTL, Fig. 3
V
RIPPLE
= 200mV
P-P
sine wave
C
BYPASS
= 4.7μF, R
L
= 16
f = 100Hz, SE, Fig. 2
1.5V
V
DD
3.6V
1.5V
V
DD
3.6V
1V
PP
Reference,
R
i
= 20k, R
f
= 50k
410
350
mW (min)
40
30
mW (min)
THD+N
Total Harmonic Distortion + Noise
0.1
0.5
% (max)
0.05
V
NO
Output Voltage Noise
10
μV
RMS
Crosstalk
58
dB
PSRR
Power Supply Rejection Ratio
70
dB
68
dB
V
IH
V
IL
Mute
Attenuation
Control Logic High
Control Logic Low
0.7V
DD
0.3V
DD
70
V (min)
V (max)
dB (min)
L
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