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參數資料
| 型號： | LA7473V |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2 CHANNEL, AUDIO AMPLIFIER, PDSO30 |
| 封裝： | 0.275 INCH, SSOP-30 |
| 文件頁數： | 5/11頁 |
| 文件大小： | 133K |
| 代理商： | LA7473V |
LA7473V
No.5333-3/11
Electrical Characteristics at Ta
= 25°C, VCC = 4.75V, f = 1kHz, RL = 10kΩ
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
ICC1
EXT MIC IN, L/Rch
3.0
4.5
5.9
mA
Current drain*
ICC2
INT MIC IN, L/Rch
4.1
5.8
7.5
mA
VG1
EXT MIC IN, L/Rch : VO = -10dBs
27.5
28
28.5
dB
Voltage gain
VG2
INT MIC IN, L/Rch : VO = -10dBs
21
21.5
22
dB
Total harmonic distortion
THD
EXT MIC IN, INT MIC IN, VO = -10dBs, L/Rch
0.05
0.2
%
Maximum output voltage
VOM
EXT MIC IN, INT MIC IN, THD = 1%, L/Rch
0
dBs
VNO1
EXT MIC IN, L/Rch, Rg = 1k
Ω, JIS-A
22
32
μVrms
Output noise voltage
VNO2
INT MIC IN, L/Rch, Rg = 1k
Ω, JIS-A
16
24
μVrms
Input switching crosstalk
SWCR
INT MIC IN
→ EXT MIC IN (Rg = 1kΩ)
f = 10kHz, L/Rch
70
80
dB
Inter-channel crosstalk
CHCR
EXT/INT MIC, Lch
→ Rch, Rch → Lch, f = 10kHz
45
51
dB
Internal microphone power
supply output voltage*
VINM
The pin 31 DC level with a 30k
Ω load
2.15
2.3
2.45
V
CTLH
High level, the pin 1/pin 30 DC voltage
1.3
VCC
V
Input switching control voltage
CTLL
Low level, the pin 1/pin 30 DC voltage
-0.3
+0.7
V
VCH
High level, pin 15/pin 16
3.8
V
MIC MONO and EXT/INT output
level*
VCL
Low level, pin 15/pin 16
0.4
V
ZIN1
EXT MIC IN, L/Rch
56
70
84
k
Ω
ZIN2
IXT MIC IN, L/Rch
56
70
84
k
Ω
Input impedance
ZIN3
Pin 1/pin 30
100
k
Ω
Output impedance
ZO
Pin 13/pin 18
130
Ω
Ripple rejection ratio
VR
Output level at f = 100Hz and VIN = -20dBs
-50
dBs
Inrush current*
ICT
Pin 1/pin 30, with an applied voltage of 4.75V
47.5
μA
Note * : Items for which the ratings differ in 3.3V mode.
Package Dimensions
unit : mm (typ)
3191B
SANYO : SSOP30(275mil)
9.75
5.
6
7.
6
0.22
0.65
(0.33)
1
15
16
30
0.
5
0.15
1.
5max
0.
1
(1.
3)
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