LM4875MX/NOPB National Semiconductor, LM4875MX/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM4875MX/NOPB
• Description: IC AMP AUDIO PWR 1W MONO 8SOIC
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4875MX/NOPB

• Output Type: 1-Channel (Mono) with Mono Headphones
• Max Output Power X Channels @ Load: 1W x 1 @ 8 Ohm; 110mW x 1 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Mute, Shutdown, Thermal Protection, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Operational Class: Class-AB
• 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: Lead free / RoHS Compliant
• Other names: LM4875MX

External Components Description
Typical Performance Characteristics
Components
(Figure 1)
1.
2.
3.
C
C
C
S
B
i
THD+N vs Output Power
Input coupling capacitor blocks DC voltage at the amplifier’s input terminals. It also creates a highpass filter
with the internal R
Information section, Selecting External Components, for an explanation of determining the value of C
The supply bypass capacitor. Refer to the Power Supply Bypassing section for information about properly
placing, and selecting the value of, this capacitor.
The capacitor, C
Information section, Selecting External Components, for information concerning proper placement and
selecting C
THD+N vs Frequency
B
’s value.
B
, filters the half-supply voltage present on the BYPASS pin. Refer to the Application
i
that produces an f
10104205
10104207
c
= 1/(2πR
Functional Description
3
i
C
i
) (10kΩ ≤ R
i
≤ 100kΩ). Refer to the Application
THD+N vs Output Power
THD+N vs Frequency
10104206
10104208
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i
.