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參數(shù)資料
| 型號： | LA7458W |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 MM, SQFP-64 |
| 文件頁數(shù)： | 12/22頁 |
| 文件大小： | 244K |
| 代理商： | LA7458W |
LA7458W
No.A0642-2/22
Electrical Characteristics at Ta
= 25°C, VCC1 = 3.15V, VCC2 = 4.8V, VCC3 = 4.8V
Ratings
Parameter
Symbol
Input
point
Test
point
Conditions
min
typ
max
Unit
Record mode current
consumption 1
ICC3R1
9
VCC1 = 3.15V, record mode, no signal
Speaker and headphone amplifiers off
14.5
18.5
22.5
mA
Record mode current
consumption 2
ICC5R1
9
VCC1 = 4.8V, record mode, no signal
Speaker and headphone amplifiers off
2.6
3.2
3.8
mA
Record mode current
consumption 3
ICC3R2
9
VCC2 = 3.15V, record mode, no signal
Speaker amplifier on
15.0
19.0
23.0
mA
Record mode current
consumption 4
ICC5R2
9
VCC2 = 4.8V, record mode, no signal
Speaker amplifier on
10.5
13.5
16.5
mA
Record mode current
consumption 5
ICC3R3
9
VCC1 = 3.15V, record mode, no signal
Headphone amplifier on
15.0
19.0
23.0
mA
Record mode current
consumption 6
ICC5R3
9
VCC2 = 4.8V, record mode, no signal
Headphone amplifier on
6.0
7.5
9.0
mA
Playback mode current
consumption 1
ICC3P1
9
VCC1 = 3.15V, playback mode, no signal
Speaker amplifier on
17.0
21.5
26.0
mA
Playback mode current
consumption 2
ICC5P1
9
VCC1 = 4.8V, playback mode, no signal
Speaker amplifier on
10.5
13.5
16.5
mA
Playback mode current
consumption 3
ICC3P2
9
VCC1 = 3.15V, playback mode, no signal
Headphone amplifier on
17.0
21.5
26.0
mA
Playback mode current
consumption 4
ICC5P2
9
VCC1 = 4.8V, playback mode, no signal
Headphone amplifier on
6.0
7.5
9.0
mA
Internal microphone power
supply output voltage
DCMIC
10
The pin 60 DC voltage when connected to a 10k
Ω
load
2.15
2.3
2.45
V
Microphone amplifier
voltage gain 1
VGMICI
1
Internal microphone input
15
16
17
dB
Microphone amplifier
voltage gain 2
VGMICE
2
1
External microphone input
21
22
23
dB
Microphone amplifier
distortion
THMIC
1, 2
1
Internal and external microphones, VO = -10dBs
0.05
0.20
%
Microphone amplifier
maximum output
VOMAX
1, 2
1
Internal and external microphones, THD = 1%
-6.5
-5.0
dBs
Microphone amplifier output
noise voltage 1
VNMICI
1
Internal microphone, Rg = 1k
Ω, A-curve filter
-99
-95
dBs
Microphone amplifier output
noise voltage 2
VNMICE
2
1
External microphone, Rg = 1k
Ω, A-curve filter
-95
-91
dBs
Microphone amplifier input
impedance
ZINMIC
1, 2
Internal and external microphones
56
70
84
k
Ω
Microphone mode Line
reference output voltage
VOML
3
2
VIN = -43dBs, f = 400Hz
-8
-7
-6
dBs
Microphone mode
Line output distortion (THD)
THAL1
3
2
VIN = -43dBs, f = 1kHz
0.15
0.30
%
Microphone ALC
Line reference output level
VOAL
3
2
VIN = -23dBs, f = 400Hz
-5
-3
-1
dBs
Microphone ALC
Line output distortion (THD)
THAL2
3
2
VIN = -23dBs, f = 1kHz
0.4
0.6
%
Microphone ALC mode
Maximum input level
VOLN
3
2
f = 1kHz, THD = 1%
-7
dBs
Line muting attenuated
output level
VMLM
3
2
VIN = -33dBs, f = 1kHz, A-curve filter
-73
-71
dBs
Maximum attenuation fader
output
VFAL
3
2
VIN = -43dBs, f = 1kHz, A-curve filter
-69
dBs
Note : Unless otherwise specified, a 30kHz low-pass filter is used. For level measurements, f = 400Hz. Distortion and crosstalk related measurements are
tested with f = 1kHz.
Note : Input point
1.INT MIC IN 2.EXT MIC IN 3.ALC MIC IN 4.ALC LINE IN 5.SP/HP AMP IN 6.PB FM IN
Test point
1.MIC AMP OUT 2.LINE OUT 3.EVR OUT 4.REC NR OUT 5.SP AMP OUT 6.HP AMP OUT 7.REC FM OUT 8.BPF MONITOR
9.VCC input current 10.INT MIC VCC
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