MAX9723BETE Ver la hoja de datos (PDF) - Maxim Integrated
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MAX9723BETE
Maxim Integrated
MAX9723BETE Datasheet PDF : 26 Pages
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MAX9723
Stereo DirectDrive Headphone Amplifier
with BassMax, Volume Control, and I2C
MAX9723AAND MAX9723B TRANSFER FUNCTION
(B5 = 1)
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Figure 7. MAX9723A/MAX9723B Transfer Function with B5 = 1
MAX9723CAND MAX9723D TRANSFER FUNCTION
(B5 = 1)
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Figure 9. MAX9723C/MAX9723D Transfer Function with B5 = 1
MAX9723AAND MAX9723B TRANSFER FUNCTION
(B5 = 0)
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Figure 8. MAX9723A/MAX9723B Transfer Function with B5 = 0
where RIN is a minimum of 10kΩ. Choose CIN such
that f-3dB is well below the lowest frequency of interest.
Setting f-3dB too high affects the amplifier’s low-frequency
response. Use capacitors with low-voltage coefficient
dielectrics. Film or C0G dielectric capacitors are good
choices for AC-coupling capacitors. Capacitors with high-
voltage coefficients, such as ceramics, can result in
increased distortion at low frequencies.
MAX9723CAND MAX9723D TRANSFER FUNCTION
(B5 = 0)
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Figure 10. MAX9723C/MAX9723D Transfer Function with B5 = 0
Charge-Pump Flying Capacitor
The charge-pump flying capacitor connected between
C1N and C1P affects the charge pump’s load regulation
and output impedance. Choosing a flying capacitor that
is too small degrades the MAX9723’s ability to provide
sufficient current drive and leads to a loss of output volt-
age. Increasing the value of the flying capacitor improves
load regulation and reduces the charge-pump output
impedance. See the Output Power vs. Charge-Pump
Capacitance and Load Resistance graph in the Typical
Operating Characteristics.
www.maximintegrated.com
Maxim Integrated │ 17
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