LM4924SD National Semiconductor, LM4924SD Datasheet - Page 14

LM4924SD

Manufacturer Part Number
LM4924SD
Description
Manufacturer
National Semiconductor
Datasheet

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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM4924SD/NOPB
Manufacturer:
NS
Quantity:
17 035
Part Number:
LM4924SDX
Quantity:
6 256
www.national.com
The LM4924 is unity-gain stable and requires no external
components besides gain-setting resistors, input coupling ca-
pacitors, and proper supply bypassing in the typical applica-
tion. However, if a very large closed-loop differential gain is
required, a feedback capacitor (C
width limit the amplifier. This feedback capacitor creates a low
pass filter that eliminates possible high frequency oscillations.
REFERENCE DESIGN BOARD and LAYOUT GUIDELINES
MSOP & SD BOARDS
(Note: R
PU
2 is not required. It is used for test measurement purposes only.)
f
) may be needed to band-
FIGURE 4.
14
Care should be taken when calculating the -3dB frequency in
that an incorrect combination of R
response roll off before 20kHz. A typical combination of feed-
back resistor and capacitor that will not produce audio band
high frequency roll off is Rf = 20kΩ and C
components result in a -3dB point of approximately 320kHz.
f
and C
f
will cause frequency
f
= 25pF. These
20121030

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