LM4924SD National Semiconductor, LM4924SD Datasheet - Page 13

• Manufacturer Part Number: LM4924SD
• Manufacturer: National Semiconductor

Specifications of LM4924SD

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 0.04x2@16OhmW
• Audio Amplifier Function: Headphone
• Total Harmonic Distortion: 0.1@16Ohm@10mW%
• Single Supply Voltage (typ): 3V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 66dB
• Single Supply Voltage (min): 1.5V
• Single Supply Voltage (max): 3.6V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 10
• Package Type: LLP EP
• Lead Free Status / Rohs Status: Not Compliant

The result is
Use a 0.39µF capacitor, the closest standard value.
The high frequency pole is determined by the product of the
desired frequency pole, f
HIGHER GAIN AUDIO AMPLIFIER
1/(2
π
*20kΩ*20Hz) = 0.397µF
H
, and the differential gain, A
V
. With
FIGURE 3.
13
an A
which is much smaller than the LM4924 GBWP of 11MHz.
This figure displays that if a designer has a need to design an
amplifier with higher differential gain, the LM4924 can still be
used without running into bandwidth limitations.
V
= 1 and f
H
= 100kHz, the resulting GBWP = 100kHz
20121029
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