參數(shù)資料
型號： LA4581MB
廠商： Sanyo Electric Co.,Ltd.
元件分類： 音頻放大器
英文描述： Oscillator; Frequency:75MHz; Frequency Tolerance:+/-50ppm; Load Capacitance:15pF; Supply Voltage:3.3V; Crystal Terminals:Surface Mount (SMD, SMT)
中文描述： 前置放大器功率放大器為3V耳機(jī)音響
文件頁數(shù)： 4/8頁
文件大?。?/td> 216K
代理商： LA4581MB
Continued from preceding page.
Pin No.
Pin Function
8
PRE MUTE
v
When V
CC
is applied, PRE MUTE ON.
v
MUTE ON conditions: V
8IN
^
V
CC
– 0.2 V, inflow current I
7
7
60 μA (when V
CC
= 3 V)
Ripple Filter REF 2.7 V(C
7
= 2.2 μF to 33 μF)
v
Ripple Filter, V
ref
reference
v
The V
ref
ripple rejection ratio worsens when C
7
is made smaller.
v
R
r
is 55 dB for 22 μF; 35 dB for 2.2 μF.
Ripple Filter OUT 2.7 V
v
Ripple rejection ratio: R
r
is 38 dB when C
7
= 22 μF; 30 dB when C
7
= 2.2 μF.
v
Outflow current I
7
max = 1 mA
V
CC
3.0 V
POWER GND
COMMON 1.2 V
POWER OUT1 1.2 V
v
CH1 output.
POWER OUT2 1.2 V
v
CH2 output
POWER MUTE 0.7 V (C
10
= 1.0 μF to 4.7 μF)
v
When connected to GND: POWER MUTE ON.
v
MUTE ON conditions: V
16
%
0.3 V, outflow current I
16
7
2.5 μA.
v
C
10
can be used to control MUTE TIME.
v
When C
10
= 2.2 μF, V
CC
=3.0 V 0.7 sec.
FWD/REV SW (C11
%
0.47 μF)
v
When connected to GND, PRE IN1R (pin 2) and IN2R (pin 23) turn on.
v
When floating, PRE IN1F (pin 3) and IN2F (pin 22) turn on.
v
C
11
and R
7
are intended for smoothing at the time of switching.
v
REV condition: V
17
%
0.2 V.
POWER IN2 1.8 V
v
Input resistance R
IN
7
30 k
SW OUT2 1.8 V
v
Provides PRE AMP2 when pin 8 is floating (PRE MUTE OFF) (equivalent to pin 20).
v
Disconnects from PRE AMP2 and R
IN
^
500 k
when pin 8 is V
CC
(PRE MUTE ON).
PRE OUT2 1.8 V
v
Like pin 19, 10 k
load drivable.
PRE NF2 1.8V
PRE IN2F 1.8 V
v
Turns on when pin 17 is floating.
v
A bias resistor (2.2 k
) must be connected between pin 22 and pin 24 (V
ref
) when no head is in use.
PRE IN2R 1.8 V
v
Turns on when pin 17 is connected to GND.
v
A bias resistor (2.2 k
) must be connected between pin 23 and pin 24(V
ref
) when no head is in use.
V
ref
1.8 V
v
The reference voltage is set to 3/5
×
V
CC
. Because Vref AMP (r
O
7
10
) is built in, C
17
can be made smaller (1 μF).
v
Inflow/outflow current I
24
= ± 500 μA available.
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Sample Application:
Radio set application.
As shown above, Radio on and
Pre Mute can be implemented with one-circuit
switch.
LA4581MB
No.3535-4/8
相關(guān)PDF資料
PDF描述
LA4582 Pre Power Amplifier for 3-V Headphone Stereo Systems
LA4582CM Oscillator; Supply Voltage:5V; Package/Case:14-DIP; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No; Crystal Terminals:Through Hole; Frequency:3.6864MHz; Frequency Tolerance:100ppm; Load Capacitance:15pF RoHS Compliant: Yes
LA4583 Oscillator; Frequency:22MHz; Frequency Tolerance:+/-25ppm; Load Capacitance:15pF; Supply Voltage:2.84V; Crystal Terminals:Surface Mount (SMD, SMT); Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes RoHS Compliant: Yes
LA4583M SMD, 12.288MHZ, 1MW, 50PPM
LA4585M 3V preamplifier + power amplifier for Headphone Stereo Products(用于耳機(jī)立體聲的3V 前置放大器+功率放大器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LA4582 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Pre Power Amplifier for 3-V Headphone Stereo Systems
LA4582CM 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Pre Power Amplifier for 3-V Headphone Stereo Systems
LA4583 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Cassette Stereo Recording and Playback System
LA4583M 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Cassette Stereo Recording and Playback System
LA4585 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:3-V Preamplifier Power Amplifier for Headphone Stereo Products
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