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LA4581MB Folha de dados(PDF) 3 Page - Sanyo Semicon Device

Nome de Peças LA4581MB
Descrição Electrónicos  Preamplifier Power Amplifier for 3V Headphone Stereos
Download  8 Pages
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Fabricante Electrônico  SANYO [Sanyo Semicon Device]
Página de início  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA4581MB Folha de dados(HTML) 3 Page - Sanyo Semicon Device

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Sample Application Circuit
Pin and external part functions (when the voltage is VCC = 3.0 V)
Pin No.
Pin Function
1
PRE GND
2
PRE IN1R 1.8 V
v Turns ON when pin 17 is grounded.
v A bias resistor (2.2 k
Ω) must be connected between pin 2 and pin 24 (Vref) when no head is in use.
3
PRE IN1F 1.8 V
v Turns ON when pin 17 is floating.
v A bias resistor (2.2 k
Ω) must be connected between pin 3 and pin 24 (Vref) when no head is in use.
4
PRE NF1 1.8 V
5
PRE OUT1 1.8 V
v Like pin 6, 10 k
Ω load drivable.
6
SW OUT1 1.8V
v Provides PRE AMP1 output when pin 8 is floating (PRE MUTE OFF)(equivalent to pin 5).
v Disconnects from PRE AMP1 and sets RIN ^ 500 kΩ when pin 8 is at VCC (PRE MUTE ON).
7
POWER IN1 1.8V
v Input resistance RIN 7 30 kΩ
Continued on next page.
Ambient temperature, Ta − °C
Preamplifier input is applied to pins 2,23/
pins 3,22 when SW ON/OFF, respectively.
POWER MUTE ON when
connected to GND.
Note) Pre closed loop gain VG = 40 dB/1 kHz NAB
PRE MUTE ON when
connected to VCC
Unit (resistance:
Ω, capacitance: F)
1.8 to 3.6 V
LA4581MB
No.3535-3/8


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