Overview
The LMH6645MFX/NOPB is a high-performance operational amplifier produced by Texas Instruments. This device is part of the LMH664x series, known for its low power consumption and high speed. The LMH6645MFX/NOPB is particularly suited for applications requiring rail-to-rail input and output, a wide bandwidth, and a high slew rate. It is available in a compact SOT-23-5 package, making it ideal for space-constrained designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (V+ - V−) | 2.5 | 12 | V | |
| Operating Temperature Range | -40 | 85 | °C | |
| Bandwidth (−3dB) | 40 | 55 | MHz | |
| Slew Rate | 15 | 22 | V/μs | |
| Input-Referred Voltage Noise | 17 | nV/√Hz (at 100 kHz) | ||
| Input Offset Voltage | -4 | 4 | mV | |
| Output Current | ±20 | mA | ||
| Package | SOT-23-5 |
Key Features
- Rail-to-rail input and output capability.
- High bandwidth of up to 55 MHz.
- High slew rate of up to 22 V/μs.
- Low power consumption of 650 μA per channel.
- Compact SOT-23-5 package for space-saving designs.
- Shutdown feature available (though not applicable for LMH6645 specifically).
- High common-mode rejection ratio (CMRR) of up to 87 dB.
Applications
- Active filters.
- High-speed portable devices.
- Current sense buffers.
- High-speed transducer amplifiers.
- Multiplexing applications (though more relevant to LMH6647).
Q & A
- What is the supply voltage range for the LMH6645MFX/NOPB?
The supply voltage range is from 2.5V to 12V.
- What is the typical bandwidth of the LMH6645MFX/NOPB?
The typical bandwidth is 55 MHz.
- What is the slew rate of the LMH6645MFX/NOPB?
The slew rate is up to 22 V/μs.
- What is the input-referred voltage noise of the LMH6645MFX/NOPB?
The input-referred voltage noise is typically 17 nV/√Hz at 100 kHz.
- What is the package type of the LMH6645MFX/NOPB?
The package type is SOT-23-5.
- What are some common applications for the LMH6645MFX/NOPB?
Common applications include active filters, high-speed portable devices, current sense buffers, and high-speed transducer amplifiers.
- Does the LMH6645MFX/NOPB have a shutdown feature?
No, the LMH6645 does not have a shutdown feature; this is available in other models like the LMH6647.
- What is the operating temperature range for the LMH6645MFX/NOPB?
The operating temperature range is from -40°C to 85°C.
- What is the typical power consumption of the LMH6645MFX/NOPB?
The typical power consumption is 650 μA per channel.
- What is the common-mode rejection ratio (CMRR) of the LMH6645MFX/NOPB?
The CMRR is up to 87 dB.
