LM4865MX National Semiconductor, LM4865MX Datasheet - Page 4

• Manufacturer Part Number: LM4865MX
• Manufacturer: National Semiconductor

Specifications of LM4865MX

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono
• Output Power (typ): 1x1@8Ohm/0.11x1@8OhmW
• Audio Amplifier Function: Headphone/Speaker
• Total Harmonic Distortion: 0.6@8Ohm@300mW%
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 50dB
• Single Supply Voltage (min): 2.7V
• Single Supply Voltage (max): 5.5V
• 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: 8
• Package Type: SOIC N
• Lead Free Status / Rohs Status: Not Compliant

www.national.com
External Components Description
Typical Performance Characteristics
(Figure 1 )
Components
1.
2.
3.
C
C
C
S
B
i
THD+N vs Output Power
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. It also creates a
highpass filter with the internal R
1/(2πR
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of
External Components, for information concerning proper placement and selection of C
determine the value of C
THD+N vs Frequency
i
C
i
). Refer to the section, Proper Selection of External Components, for an explanation of how to
i
.
10102505
10102507
i
. The designer should note that10kOhm
Functional Description
4
THD+N vs Output Power
THD+N vs Frequency
<
(Ri)
<
110kOhm.Therefore f
B
.
10102506
10102508
c
=