參數(shù)資料
型號(hào): TDA1905
廠商: 意法半導(dǎo)體
元件分類(lèi): 運(yùn)動(dòng)控制電子
英文描述: 5W AUDIO AMPLIFIER WITH MUTING
中文描述: 5W具有屏蔽音頻放大器
文件頁(yè)數(shù): 5/14頁(yè)
文件大小: 215K
代理商: TDA1905
Symbol
Parameter
Testconditions
Min.
Typ.
Max.
Unit
BW
Small signal
bandwidth (-3dB)
V
s
= 14V
R
L
= 4
P
o
= 1W
40 to 40,000
Hz
G
v
Voltage gain (open loop)
V
s
= 14V
f = 1KHz
75
dB
G
v
Voltage gain (closed loop)
V
s
= 14V
f = 1KHz
R
L
= 4
P
o
= 1W
39.5
40
40.5
dB
e
N
Totalinput noise
R
g
= 50
R
g
= 1K
R
g
= 10K
(
°
)
1.2
1.3
1.5
4.0
μ
V
R
g
= 50
R
g
= 1K
R
g
= 10K
(
°°
)
2.0
2.0
2.2
6.0
μ
V
S/N
Signal to noise ratio
V
s
= 14V
P
o
= 5.5W
R
L
= 4
R
g
= 10K
R
g
= 0
(
°
)
90
92
dB
R
g
= 10K
R
g
= 0
(
°°
)
87
87
dB
SVR
Supply voltage rejection
V
s
= 18V
f
ripple
= 100 Hz
V
ripple
= 0.5V
rms
R
L
= 8
Rg = 10K
40
50
dB
T
sd
Thermal shut-down
case temperatura
(*)
P
tot
= 2.5W
115
°
C
MUTING FUNCTION
VT
OFF
Muting-off threshold
voltage (pin 4)
1.9
4.7
V
VT
ON
Muting-on threshold
voltage (pin 4)
0
1.3
V
6.2
V
s
R
5
Input-resistance (pin 5)
Muting off
80
200
K
Muting on
10
30
R
4
Input resistance (pin 4)
150
K
A
T
Muting attenuation
R
g
+ R
1
= 10K
50
60
dB
ELECTRICALCHARACTERISTICS
(continued)
Note:
(
°
)
(
°
°
) Filterwith noise bandwidth: 22 Hz to 22 KHz.
(*)
See fig.30 and fig. 31
Weighting filter= curve A.
5/14
TDA1905
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