Overview
The LMH6642MF/NOPB, produced by Texas Instruments, is a single-channel, low-power, high-speed operational amplifier. This device is part of the LMH664X family, which includes single, dual, and quad channel options. The LMH6642 is designed to offer high performance with features such as 130 MHz bandwidth, 75 mA output current, and rail-to-rail output. It is suitable for a wide range of applications requiring high speed, low distortion, and stable operation under various voltage conditions.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max |
|---|---|---|---|---|
| Bandwidth (-3dB) | AV = +1, VOUT = 200mVPP | 80 MHz | 115 MHz | - |
| Slew Rate | AV = -1, VI = 2VPP | 90 V/µs | 120 V/µs | - |
| Input Offset Voltage | - | ±7 mV | ±1 mV | ±5 mV |
| Input Bias Current | - | -3.25 µA | -1.50 µA | -2.60 µA |
| Common Mode Rejection Ratio (CMRR) | VCM stepped from 0V to 1.5V | 72 dB | 95 dB | - |
| Supply Voltage (V+ - V-) | - | - | - | 13.5 V |
| Junction Temperature | - | - | - | +150 °C |
Key Features
- High speed: 130 MHz bandwidth and 120 V/µs slew rate.
- Low distortion: -62 dBc THD at 5 MHz with RL = 2kΩ and VO = 2VPP.
- Rail-to-rail output: Ensures maximum output swing.
- Fast settling time: 68 ns.
- Output short circuit protection: Infinite duration for VS < 6 V at room temperature.
- No output phase reversal with CMVR exceeded.
- Professional quality video performance with low differential gain (0.01%) and differential phase (0.01°) characteristics.
Applications
- Active filters.
- ADC buffer amplifiers.
- CD/DVD ROM drives.
- Portable video applications.
- Current sense buffers.
Q & A
- What is the bandwidth of the LMH6642?
The LMH6642 has a bandwidth of up to 130 MHz.
- What is the slew rate of the LMH6642?
The slew rate of the LMH6642 is typically 120 V/µs.
- What is the input offset voltage of the LMH6642?
The input offset voltage is typically ±1 mV.
- Does the LMH6642 have output short circuit protection?
- What are the typical applications of the LMH6642?
The LMH6642 is typically used in active filters, ADC buffer amplifiers, CD/DVD ROM drives, portable video applications, and current sense buffers.
- What is the maximum supply voltage for the LMH6642?
The maximum supply voltage is 13.5 V.
- What is the junction temperature range for the LMH6642?
The junction temperature range is up to +150 °C.
- Does the LMH6642 have rail-to-rail output capability?
- What is the settling time of the LMH6642?
The settling time is typically 68 ns.
- Is the LMH6642 available in different package options?
