LMH6643MA

Name: LMH6643MA
Brand: Texas Instruments
Rating: 4.5 (10 reviews)
Author: Lisleapex

75mA Rail-to-Rail Output Amplifier

6,063 Effective Inventory

LMH6643MA

Effective Inventory6,063

75mA Rail-to-Rail Output Amplifier

Manufacturer Part # : LMH6643MA
Package/Case: SOIC (D)-8
Brand: Texas Instruments
Series : LMH6643

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LMH6643MA DataSheet

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LMH6643MA Details

The LMH6643MA is a high-performance operational amplifier from Texas Instruments, designed for demanding audio/video amplification applications. This device features high-speed and high-bandwidth amplification, making it suitable for use in video distribution systems, medical imaging devices, radar systems, and communication equipment.

Pinout

(V_S = ±5 V, T_A = 25°C, R_L = 2 kΩ, A_V = +1. Typical)

Key Features

High-Speed Amplification: The LMH6643MA features high-speed amplification, making it suitable for demanding audio/video applications.
High-Bandwidth Amplification: This device offers high-bandwidth amplification, ensuring reliable signal transmission and processing.
Low Noise Figure: The LMH6643MA features a low noise figure, minimizing unwanted signal distortion and interference.

Applications

Video Distribution Systems: Suitable for use in video distribution systems where high-speed amplification is required.
Medical Imaging Devices: The LMH6643MA can be used in medical imaging devices, such as ultrasound and MRI equipment, where high-bandwidth amplification is necessary.
Radar Systems: This device is suitable for use in radar systems where high-speed amplification and low noise figure are critical.

Where to Use

The LMH6643MA is suitable for applications that require high-speed and high-bandwidth amplification, such as video distribution systems, medical imaging devices, radar systems, and communication equipment.

How to Use

Connect the LMH6643MA to your audio/video signal processing circuit by wiring the input and output pins according to the device's datasheet. Ensure proper power supply connections to VCC and GND. For detailed usage instructions, refer to the datasheet.

Application Circuit

The application circuit diagram for the LMH6643MA illustrates how to connect the operational amplifier to an audio/video signal processing circuit. It includes connections for power supply, ground, and input/output signals, ensuring proper operation and reliable signal transmission.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

OPA657: A similar operational amplifier from Texas Instruments offering comparable features and performance.
LME49710: An alternative operational amplifier from National Semiconductor with equivalent functionality.

Complementary

The LMH6643MA can be complemented by the LMH6650, which offers additional features such as higher gain and improved noise performance, suitable for more demanding audio/video applications.

When selecting complementary operational amplifiers, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the typical gain of the LMH6643MA?

A: The LMH6643MA has a typical gain of +1. For more details, refer to the datasheet for specific operating conditions and limitations.

Q: Can the LMH6643MA be used in medical imaging devices?

A: Yes, the LMH6643MA is suitable for use in medical imaging devices where high-bandwidth amplification and low noise figure are critical.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Architecture	Voltage FB	Number of channels	2
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	2.7	Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	12.8
GBW (typ) (MHz)	57	BW at Acl (MHz)	130
Acl, min spec gain (V/V)	1	Slew rate (typ) (V/µs)	135
Vn at flatband (typ) (nV√Hz)	17	Vn at 1 kHz (typ) (nV√Hz)	17
Iq per channel (typ) (mA)	2.7	Vos (offset voltage at 25°C) (max) (mV)	5
Rail-to-rail	In to V-, Out	Rating	Catalog
Operating temperature range (°C)	-40 to 85	CMRR (typ) (dB)	95
Input bias current (max) (pA)	2600000	Offset drift (typ) (µV/°C)	5
Iout (typ) (mA)	115	2nd harmonic (dBc)	80
3rd harmonic (dBc)	65	Frequency of harmonic distortion measurement (MHz)	1

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LMH6643MA PDF Download

FAQs

What is LMH6643MA?

The LMH6643MA is a high-speed, high-output current operational amplifier manufactured by Texas Instruments. It is designed for high-speed signal processing applications requiring wide bandwidth and fast response times, such as video distribution, test equipment, and high-speed data acquisition.

How Does LMH6643MA Work?

The LMH6643MA operates as a high-speed operational amplifier with high output current capability. It amplifies input signals at high speeds while maintaining stability and linearity. The amplifier features a wide bandwidth and low distortion, making it suitable for high-speed data applications.

How Many Pins does LMH6643MA have and What are the Functions of the Pinout Configuration?

The LMH6643MA is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

OUT: Output pin.
IN-: Inverting input pin.
IN+: Non-inverting input pin.
V-: Negative power supply pin.
V+: Positive power supply pin.
NC1: No connection pin.
NC2: No connection pin.
NC3: No connection pin.

What are the Pros and Cons of LMH6643MA?

Pros:

High-Speed Operation: Designed for high-speed signal processing applications.
High Output Current: Capable of driving loads with high current requirements.
Wide Bandwidth: Supports wide frequency bandwidth for signal integrity.
Low Distortion: Provides low distortion output for accurate signal reproduction.
Low Input Noise: Suitable for applications requiring high signal-to-noise ratio.

Cons:

External Components: May require external components for specific applications or protection.
Power Consumption: High-speed operation may result in increased power consumption.
Size: The 8-pin SOIC package may be limiting for complex designs or applications requiring more pins.

Are There Any Equivalents/Alternatives to LMH6643MA for Recommendation?

The AD8057 from Analog Devices is a comparable high-speed operational amplifier.
Alternatives to the LMH6643MA include the MAX4239 from Maxim Integrated and the OPA658 from Texas Instruments.