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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： | 4/11頁 |
| 文件大小： | 133K |
| 代理商： | LA7473V |
LA7473V
No.5333-2/11
Specifications
Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC
7.0
V
Allowable power dissipation
Pd max
Ta
≤ 65°C
110
mV
Operating temperature
Topr
-10 to +65
°C
Storage temperature
Tstg
-55 to +150
°C
Operating Conditions at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
3.3 to 4.75
V
Recommended operating supply
voltage range
VCC op
2.7 to 3.6, 4.5 to 5.5
V
Electrical Characteristics at Ta
= 25°C, VCC = 3.3V, f = 1kHz, RL = 10kΩ
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
ICC1
EXT MIC IN, L/Rch
2.7
3.9
5.1
mA
Current drain
ICC2
INT MIC IN, L/Rch
3.8
5.4
7.0
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
2.25
2.4
2.55
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
2.5
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 3.3V
47.5
μA
Power supply mode switching
voltage
VCCLH
The VCC (pin 7) switching voltages: Mode 1
(3.3V typical)/mode 2 (4.75V typical)
3.65
4.45
V
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