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LM4845 Datasheet(PDF) 9 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM4845
Descripción Electrónicos  Output Capacitor-less Audio Subsystem with Programmable National 3D
Download  29 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4845 Datasheet(HTML) 9 Page - National Semiconductor (TI)

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External Components Description
Components
Functional Description
1C
IN
This is the input coupling capacitor. It blocks the DC voltage and couples the input signal to the
amplifier’s input terminals. C
IN also creates a highpass filter with the internal resistor Ri (Input
Impedance) at f
c = 1/(2
πR
iCIN).
2C
SUPPLY
This is the supply bypass capacitor. It filters the supply voltage applied to the V
DD pin.
3C
BYPASS
This is the BYPASS pin capacitor. It filters the 1/2V
DD voltage.
4C
3DL
This is the left channel 3D capacitor.
5C
3DR
This is the right channel 3D capacitor.
6C
OL
This is the left channel DC blocking output capacitor.
7C
OR
This is the right channel DC blocking output capacitor.
8C
I2CSPI_SUPPLY
This is the I
2C/SPI supply bypass capacitor. It filters the I2C/SPI supply voltage applied to the
I
2C/SPI_V
DD pin.
9R
3DL
This is the left channel 3D external resistor. OPTIONAL.
10
R
3DR
This is the right channel 3D external resistor. OPTIONAL.
Typical Performance Characteristics
THD+N vs Frequency
V
DD = 3.3V, RL =8
Ω,P
O = 250mW
Mode 1, BTL
THD+N vs Frequency
V
DD = 3.3V, RL =32
Ω,P
O = 12mW
Mode 4, OCL
20105929
20105930
THD+N vs Frequency
V
DD = 3.3V, RL =32
Ω,P
O = 12mW
Mode 6, OCL
THD+N vs Frequency
V
DD = 3.3V, RL =32
Ω,P
O = 12mW
Mode 4, SE
20105939
20105931
www.national.com
9


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