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LME49725 Datasheet, PDF (17/25 Pages) National Semiconductor (TI) – PowerWise Dual High Performance, High Fidelity Audio Operational Amplifier
LME49725
www.ti.com
APPLICATION INFORMATION
SNAS427A – APRIL 2008 – REVISED APRIL 2013
OPERATING RATINGS AND BASIC DESIGN GUIDELINES
The LME49725 has a supply voltage range from +9V to +36V single supply or ±4.5V to ±18V dual supply.
Bypass capacitors for the supplies should be placed as close to the amplifier as possible. This will help minimize
any inductance between the power supply and the supply pins. In addition to a 10μF capacitor, a 0.1μF capacitor
is also recommended.
The amplifier’s inputs lead lengths should also be as short as possible. If the op amp does not have a bypass
capacitor, it may oscillate.
Demonstration Board Schematic
JP1
R3
R2
1
2
VDD
C3
JP5
1
C2
2
3
C1
VSS C4
JMPR1
JMPR2
JP2
JMPR3
-
R1
1
+
2
R4
P2
R8
R7
JMPR4
JMPR5
JP4
JMPR6
-
R6
1
+
2
R9
P4
P1
JP3
1
2
P3
Bill Of Materials For Demonstration Board (Inverting Configuration)
Description
Ceramic Capacitor 0.1μF, 10% 50V
0805 SMD
Tantalum Capacitor 10μF, 10% 20V,
B-size
Resistor 0Ω, 1/8W, 1% 0805 SMD
Resistor 10kΩ, 1/8W, 1% 0805 SMD
Header, 2-Pin
Header, 3-Pin
SMA stand-up connectors
Designator (1)
C1, C2
C3, C4
JMPR1, JMPR4, R1, R4, R6, R9
R2, R3, R8, R7
JP1, JP2, JP3, JP4
JP5
P1-P4 (Optional)
(1) Do not stuff JMPR2, JMPR3, JMPR5, and JMPR6.
Part Number
C0805C104K3RAC7533
T491B106K025AT
CRCW0805000020EA
CRCW080510K0FKEA
132134
Mfg
Kemet
Kemet
Vishay
Vishay
Amphenol COnnex
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