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LM1875T/NOPB Audio Amplifier: Feature,Specification,Datasheet

IC AMP CLASS AB MONO 25W TO220-5 The LM1875T is a monolithic power amplifier offering very low distortion and high-quality performance for consumer audio applications.

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Jun 5, 2021

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IC AMP CLASS AB MONO 25W TO220-5

The LM1875T is a monolithic power amplifier offering very low distortion and high-quality performance for consumer audio applications.

LM1875T/NOPB

570In Stock
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100+ $3.62884$362.88
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LM1875T Description

The LM1875T delivers 20 watts into a 4Ω or 8Ω load on ±25V supplies. Using an 8Ω load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.

The LM1875T design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate, and wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.

LM1875T Features

• Up to 30 watts output power

• AVO typically 90 dB

• Low distortion: 0.015%, 1 kHz, 20 W

• Wide power bandwidth: 70 kHz

• Protection for AC and DC short circuits to ground

• Thermal protection with parole circuit

• High current capability: 4A

• Wide supply range 16V-60V

• Internal output protection diodes

• 94 dB ripple rejection

• Plastic power package TO-220

LM1875T Advantages

The maximum output power is 30W.

The harmonic distortion is 0.07.

The bandwidth is 10-100K (+/-3Db).

LM1875T Applications

• High-performance audio systems

• Bridge amplifiers

• Stereo phonographs

• Servo amplifiers

• Instrument systems

 

LM1875T Connection Diagram

LM1875T CAD Model

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3D Model

Specifications

Texas Instruments LM1875T/NOPB technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments LM1875T/NOPB.

LM1875T/NOPB Tech Specifications

Texas Instruments LM1875T/NOPB technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments LM1875T/NOPB.

Product Attribute Attribute Value
Lifecycle StatusACTIVE (Last Updated: 5 days ago)
Factory Lead Time6 Weeks
Mounting TypeThrough Hole
Package / CaseTO-220-5 Formed Leads
Surface MountNO
Number of Pins5Pins
Weight9.071847g
Operating Temperature0°C~70°C TA
PackagingTube
JESD-609 Codee3
Pbfree Codeyes
Part StatusActive
Moisture Sensitivity Level (MSL)1 (Unlimited)
TerminationThrough Hole
ECCN CodeEAR99
TypeClass AB
Terminal FinishMatte Tin (Sn)
Voltage - Supply16V~60V ±8V~30V
Product Attribute Attribute Value
Terminal PositionZIG-ZAG
Number of Functions1Function
Base Part NumberLM1875
Output Type1-Channel (Mono)
Operating Supply Voltage28V
Number of Channels2Channels
Nominal Supply Current100mA
Max Supply Current100mA
Quiescent Current70mA
Output Power25W
Slew Rate8 V/μs
Supply TypeDual, Single
Input Offset Voltage (Vos)15mV
Gain Bandwidth Product5.5MHz
Voltage Gain90dB
Power Supply Rejection Ratio (PSRR)95dB
Gain90 dB
Max Dual Supply Voltage30V
Product Attribute Attribute Value
Max Output Power30W
Min Dual Supply Voltage8V
Dual Supply Voltage18V
Input Bias Current2μA
Max Output Power x Channels @ Load25W x 1 @ 8 Ω
Harmonic Distortion1%
Number of Amplifiers1Amplifier
Load Impedance8Ohm
FeaturesShort-Circuit and Thermal Protection
Height4.7mm
Length14.986mm
Width10.16mm
Thickness4.572mm
REACH SVHCNo SVHC
Radiation HardeningNo
RoHS StatusROHS3 Compliant
Lead FreeLead Free
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LM1875T Manufacturer

As a global semiconductor company operating in 35 countries, Texas Instruments (TI) is first and foremost a reflection of its people. From the TIer who unveiled the first working integrated circuit in 1958 to the more than 30,000 TIers around the world today who design, manufacture, and sell analog and embedded processing chips, we are problem-solvers collaborating to change the world through technology.

LM1875T Typical Application

Datasheet PDF

Download datasheets and manufacturer documentation for Texas Instruments LM1875T/NOPB.

LM1875T/NOPB Documents

Download datasheets and manufacturer documentation for LM1875T/NOPB

Frequently Asked Questions

Where to place resistor in lm1875 amplifier?
If highly capacitive loads are expected, a resistor (at least 1Ω) should be placed in series with the output of the LM1875. A method commonly employed to protect amplifiers from low impedances at high frequencies is to couple to the load through a 10Ωresistor in parallel with a 5 μH inductor.
Can a lm1875 be used as a heatsink?
Slowly turn up the voltage - the LM1875 handles +-25V like a champ, so if you have a decent heatsink there shouldn't be anything to worry about. I ran the output into a gigantic dummy load (a 300W, 8Ω resistor) and scoped the output.
What is a lm1875 amplifier?
The LM1875 is a wide power amplifier with very low distortion and high-quality efficiency for audio applications. It gives power is 20 watts into a 4 ohms or 8 ohms load on 25V power supplies. Its amplifiers circuits are designed to working with a minimum of external parts.
What kind of power supply does a gobo lm1875 have?
The power supply schematic for the Gobo LM1875 amplifier, also from the step-by-step instructions manual is shown in Figure 2. The power supply is fed from the toroidal transformer through dual 12V secondaries. A full wave bridge rectifier is used to produce a symmetrical 16.8VDC supply.
Which is the gain resistor on the lm1875?
R1 and R2 are the gain resistors attached to the inverting input of the amplifier. The values of 22KΩ and 1KΩ work out to a gain of 23: To change the gain, simply swap R1 out with another resistor in the kohm range and plug it into the formula. CIC1 to CIC4 are the decoupling capacitors for the LM1875.
FAQ
Where to place resistor in lm1875 amplifier?
If highly capacitive loads are expected, a resistor (at least 1Ω) should be placed in series with the output of the LM1875. A method commonly employed to protect amplifiers from low impedances at high frequencies is to couple to the load through a 10Ωresistor in parallel with a 5 μH inductor.
Can a lm1875 be used as a heatsink?
Slowly turn up the voltage - the LM1875 handles +-25V like a champ, so if you have a decent heatsink there shouldn't be anything to worry about. I ran the output into a gigantic dummy load (a 300W, 8Ω resistor) and scoped the output.
What is a lm1875 amplifier?
The LM1875 is a wide power amplifier with very low distortion and high-quality efficiency for audio applications. It gives power is 20 watts into a 4 ohms or 8 ohms load on 25V power supplies. Its amplifiers circuits are designed to working with a minimum of external parts.
What kind of power supply does a gobo lm1875 have?
The power supply schematic for the Gobo LM1875 amplifier, also from the step-by-step instructions manual is shown in Figure 2. The power supply is fed from the toroidal transformer through dual 12V secondaries. A full wave bridge rectifier is used to produce a symmetrical 16.8VDC supply.
Which is the gain resistor on the lm1875?
R1 and R2 are the gain resistors attached to the inverting input of the amplifier. The values of 22KΩ and 1KΩ work out to a gain of 23: To change the gain, simply swap R1 out with another resistor in the kohm range and plug it into the formula. CIC1 to CIC4 are the decoupling capacitors for the LM1875.

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