LM4890M/NOPB National Semiconductor, LM4890M/NOPB Datasheet - Page 6

• Manufacturer Part Number: LM4890M/NOPB
• Description: IC AMP AUDIO PWR 1W MONO 8SOIC
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4890M/NOPB

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1W x 1 @ 8 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Features: Depop, Shutdown, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Amplifier Class: AB
• No. Of Channels: 1
• Output Power: 1W
• Supply Voltage Range: 2.2V To 5.5V
• Load Impedance: 8ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: SOIC
• Rohs Compliant: Yes
• For Use With: LM4890MBD - BOARD EVALUATION LM4890M
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM4890M; *LM4890M/NOPB; LM4890M

www.national.com
External Components Description
Components
1.
2.
3.
4.
5.
C
BYPASS
R
C
C
R
IN
IN
S
f
Inverting input resistance which sets the closed-loop gain in conjunction with R
high pass filter with C
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
highpass filter with R
Components, for an explanation of how to determine the value of C
Feedback resistance which sets the closed-loop gain in conjunction with R
Supply bypass capacitor which provides power supply filtering. Refer to the section, Power Supply
Bypassing, for information concerning proper placement and selection of the supply bypass capacitor,
C
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
BYPASS
.
IN
IN
at f
at f
c
C
= 1/(2π R
= 1/(2π R
IN
IN
C
C
(Figure 1)
IN
IN
). Refer to the section, Proper Selection of External
Functional Description
).
6
IN
.
IN
.
BYPASS
f
. This resistor also forms a
.