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Name: LMH6643MM
Brand: Texas Instruments
SKU: LMH6643MM
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments LMH6643MM

Part No.:: LMH6643MM

Manufacturer:: Texas Instruments

Package:: 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

Datasheet:: LMH6643MM.pdf

Description:: IC OPAMP VFB 2 CIRCUIT 8VSSOP

In Stock:: 18928

Quantity:: Add To Cart

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LMH6643MM Specifications

Package/Case:
8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®,Bulk
Series:
LMH®
ProductStatus:
Not For New Designs
AmplifierType:
Voltage Feedback
NumberofCircuits:
2
OutputType:
Rail-to-Rail
SlewRate:
135V/µs
GainBandwidthProduct:
-
-3dbBandwidth:
130 MHz
Current-InputBias:
1.6 µA
Voltage-InputOffset:
1 mV
Current-Supply:
2.7mA (x2 Channels)
Current-Output/Channel:
75 mA
Voltage-SupplySpan(Min):
2.7 V
Voltage-SupplySpan(Max):
12.8 V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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LMH6643MM information

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LMH6643MM Typical application Circuitry

LMH6643MMX

The LMH6643MM is a low-power, high-speed voltage feedback operational amplifier (op-amp) designed for a wide range of applications. It is known for its low power consumption, high slew rate, and wide bandwidth.

Applications: This chip is commonly used in applications such as active filters, ADC (analog-to-digital converter) drivers, DAC (digital-to-analog converter) buffers, and high-speed signal conditioning. Its high-speed performance makes it suitable for video, telecommunications, and data acquisition systems.

Key Parameters:

1. Supply Voltage Range: 2.7V to 12V, accommodating various power supply configurations.

2. Output Current: Capable of delivering up to 80mA, suitable for driving a range of loads.

3. Slew Rate: 130V/µs, ensuring fast response times in high-speed applications.

4. Bandwidth: 75MHz, providing ample frequency response for a wide range of signals.

5. Input Offset Voltage: Typically 3.5mV, ensuring accuracy in signal processing.

Designing a High-Speed Buffer Circuit with the LMH6643MM

1. Power Supply Connection:

- Dual-Supply Configuration: For a ±5V supply, connect the positive supply to the V+ pin (pin 8) and the negative supply to the V- pin (pin 4) of the LMH6643MM. Bypass each supply pin with a 0.1µF ceramic capacitor to ground for stability.

2. Input Signal Coupling:

- AC Coupling: If the input signal is AC, use a capacitor (e.g., 1µF) to couple the input signal to the non-inverting input (pin 3) of the LMH6643MM. This blocks any DC component of the signal.

3. Feedback Network:

- Unity Gain Configuration: Connect the output (pin 1) directly to the inverting input (pin 2) for a unity gain buffer configuration. This provides a high-speed, low-distortion signal path.

4. Output Load:

- Attention to Load: Make that the load attached to the LMH6643MM's output (pin 1) does not exceed the 80mA maximum output current rating. If necessary, the current can be limited with a series resistor.

5. Decoupling Capacitors:

- Decoupling of Power Supply: Put ceramic capacitors with a 0.1µF value near the LMH6643MM's V+ and V-pins to enhance noise performance and enable local power supply decoupling.

Key Design Considerations

- Supply Voltage Range: Ensure that the supply voltage is within the specified range of the LMH6643MM.

- Signal Bandwidth: Design the circuit to accommodate the bandwidth of the input signal, considering the 75MHz bandwidth of the LMH6643MM.

- Slew Rate: Ensure that the slew rate of the LMH6643MM is sufficient for the application's speed requirements.

- Load Compatibility: Check to make sure the load attached to the output does not draw more current than the chip can handle.

The LMH6643MM chip offers high-speed performance and low power consumption, making it suitable for a wide range of applications, including high-speed buffering. By following the detailed circuit design guidelines and considering key factors, you can create a reliable and efficient circuit that leverages the capabilities of the LMH6643MM.

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6. What is the process for return or replacement of LMH6643MM?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LMH6643MM we delivered, we will accept the replacement or return of the LMH6643MM only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of LMH6643MM.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations