Overview
The LMH6642MF from Texas Instruments is a single-channel, low-power operational amplifier designed for high-speed applications. It belongs to the LMH664X family of true single supply voltage feedback amplifiers, offering high speed, low distortion, and high output current at a low cost and reduced power consumption. This amplifier is particularly suited for industrial and commercial applications due to its wide dynamic range, fast slew rate, and low distortion characteristics.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOT-23 (DBV) with 5 pins |
| Operating Temperature Range | -40°C to 85°C |
| −3 dB Bandwidth (AV = +1) | 130 MHz |
| Supply Voltage Range | 2.7 V to 12.8 V |
| Slew Rate (AV = −1) | 130 V/µs |
| 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 | 0.5 V beyond 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 |
| Overdrive Recovery | 100 ns |
| Output Short Circuit Protection | Yes |
Key Features
- High speed operation with a bandwidth of 130 MHz
- Low distortion of −62 dBc at 5 MHz
- High output current of approximately 75 mA
- Rail-to-rail output swing, extending to within 40 mV of either supply rail
- Wide input common mode voltage range, extending 0.5 V below V− and 1 V from V+
- Fast slew rate of 130 V/µs
- Low supply current of 2.7 mA/amp
- Output short circuit protection and no output phase reversal with CMVR exceeded
- Fully characterized for 3 V, 5 V, and ±5 V supplies
- Professional quality video performance with low differential gain and phase
Applications
- ADC buffer applications
- High-frequency filter applications
- Industrial and commercial applications requiring high speed and low distortion
- Video amplification with low differential gain and phase
- Automotive and military applications due to its wide operating temperature range
Q & A
- What is the bandwidth of the LMH6642MF operational amplifier?
The LMH6642MF has a bandwidth of 130 MHz.
- What is the supply voltage range for the LMH6642MF?
The supply voltage range is from 2.7 V to 12.8 V.
- What is the maximum output current of the LMH6642MF?
The maximum output current is approximately 75 mA.
- Does the LMH6642MF have output short circuit protection?
Yes, the LMH6642MF has output short circuit protection.
- What is the slew rate of the LMH6642MF?
The slew rate is 130 V/µs.
- What is the settling time of the LMH6642MF?
The settling time is 68 ns.
- Is the LMH6642MF suitable for video applications?
Yes, it offers professional quality video performance with low differential gain and phase.
- What is the input voltage noise of the LMH6642MF at 100 kHz?
The input voltage noise is 17 nV/√Hz at 100 kHz.
- What is the operating temperature range of the LMH6642MF?
The operating temperature range is from -40°C to 85°C.
- Does the LMH6642MF have rail-to-rail output swing?
Yes, the output voltage swing extends to within 40 mV of either supply rail.
