LM4855IBLX National Semiconductor, LM4855IBLX Datasheet - Page 7

• Manufacturer Part Number: LM4855IBLX
• Manufacturer: National Semiconductor

Specifications of LM4855IBLX

• Operational Class: Class-AB
• Audio Amplifier Function: Headphone/Speaker
• Total Harmonic Distortion: 0.5@8Ohm@400mW%
• Single Supply Voltage (typ): 3V
• Dual Supply Voltage (typ): Not RequiredV
• Supply Current (max): 12@5VmA
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 62dB
• Single Supply Voltage (min): 2.6V
• Single Supply Voltage (max): 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: 18
• Package Type: uSMD
• Lead Free Status / RoHS Status: Not Compliant

External Components Description
Typical Performance Characteristics
Components
1.
2.
3.
C
C
C
IN
S
B
This is the input coupling capacitor. It blocks the DC voltage and couples the input signal to the amplifier’s
input terminals. C
1/(2πR
This is the supply bypass capacitor. It filters the supply voltage applied to the V
the LM4855’s PSRR.
This is the BYPASS pin capacitor. It filters the V
THD+N vs Frequency
THD+N vs Frequency
LM4855LQ
i
C
IN
).
IN
also creates a highpass filter with the internal resistor R
200395B1
200395F0
Functional Description
7
DD
/ 2 voltage and helps maintain the LM4855’s PSRR.
THD+N vs Frequency
THD+N vs Frequency
LM4855LQ
i
(Input Impedance) at f
DD
pin and helps maintain
200395B2
200395F1
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