Overview
The LMH6643MMX/NOPB is a dual-channel operational amplifier produced by Texas Instruments. It belongs to the LMH664X family of true single supply voltage feedback amplifiers, known for their high speed, low distortion, and high output current at a low cost and reduced power consumption. This device is particularly suited for a wide range of industrial and commercial applications due to its exceptional performance characteristics.
The LMH6643MMX/NOPB features a high bandwidth of 130 MHz, a slew rate of 130 V/µs, and an output current capability of approximately 75 mA. It operates over a supply voltage range of 2.7 V to 12.8 V and is available in a VSSOP-8 package, making it versatile for various applications including ADC buffers, high-frequency filters, and professional quality video systems.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LMH6643MMX/NOPB |
| Package | VSSOP-8 |
| Bandwidth (−3 dB) | 130 MHz (AV = +1) |
| Supply Voltage Range | 2.7 V to 12.8 V |
| Slew Rate | 130 V/µs (AV = −1) |
| Supply Current (no load) | 2.7 mA/amp |
| Output Short Circuit Current | +115 mA to +145 mA |
| Linear Output Current | ±75 mA |
| Input Common Mode Voltage Range | 0.5 V below V−, 1 V from V+ |
| Output Voltage Swing | 40 mV from rails |
| Input Voltage Noise (100 kHz) | 17 nV/√Hz |
| Input Current Noise (100 kHz) | 0.9 pA/√Hz |
| THD (5 MHz, RL = 2 kΩ, VO = 2 V PP, AV = +2) | −62 dBc |
| Settling Time | 68 ns |
| Operating Temperature Range | −40°C to 85°C |
Key Features
- High Speed and Low Distortion: 130 MHz bandwidth and −62 dBc THD at 5 MHz, ensuring high fidelity signal processing.
- High Output Current: Capable of delivering approximately 75 mA, making it suitable for driving heavy loads.
- Rail-to-Rail Output: Output voltage range extends to within 40 mV of either supply rail, enhancing dynamic range in low voltage applications.
- Low Power Consumption: Reduced power consumption compared to similar performance devices.
- Professional Video Performance: Low differential gain (0.01%) and differential phase (0.01°) characteristics, ideal for video applications.
- Stability and Frequency Response: Well-behaved frequency response with minimal peaking and fast settling time, ensuring stability under various operating conditions.
- Multiple Supply Voltage Options: Operates on single or dual supply voltages ranging from 2.7 V to 12.8 V.
- Compact Packaging: Available in a VSSOP-8 package, suitable for surface mount applications.
Applications
- ADC Buffers: Ideal for buffering analog-to-digital converters due to its high speed and low distortion.
- High Frequency Filters: Suitable for high-frequency filter applications requiring fast settling times and minimal peaking.
- Professional Video Systems: Offers professional quality video performance with low differential gain and phase characteristics.
- Industrial and Commercial Applications: Versatile for various industrial and commercial applications requiring high speed, low distortion, and high output current.
- Audio and Signal Processing: Can be used in audio and signal processing applications where high fidelity and low noise are critical.
Q & A
- What is the bandwidth of the LMH6643MMX/NOPB operational amplifier?
The bandwidth of the LMH6643MMX/NOPB is 130 MHz (AV = +1).
- What is the slew rate of the LMH6643MMX/NOPB?
The slew rate is 130 V/µs (AV = −1).
- What is the supply voltage range for the LMH6643MMX/NOPB?
The supply voltage range is from 2.7 V to 12.8 V.
- How much output current can the LMH6643MMX/NOPB deliver?
The device can deliver approximately 75 mA of output current.
- What is the operating temperature range of the LMH6643MMX/NOPB?
The operating temperature range is from −40°C to 85°C.
- Is the LMH6643MMX/NOPB suitable for video applications?
Yes, it is suitable for video applications due to its low differential gain (0.01%) and differential phase (0.01°) characteristics.
- What is the package type of the LMH6643MMX/NOPB?
The package type is VSSOP-8.
- Does the LMH6643MMX/NOPB have rail-to-rail output capability?
Yes, the output voltage range extends to within 40 mV of either supply rail.
- What is the typical settling time of the LMH6643MMX/NOPB?
The typical settling time is 68 ns.
- Is the LMH6643MMX/NOPB RoHS compliant?
Yes, the LMH6643MMX/NOPB is RoHS compliant.
