Overview
The LMH6644MAX/NOPB is a quad, low-power, 130 MHz operational amplifier produced by Texas Instruments. This device is part of the LMH664X family, which includes single (LMH6642), dual (LMH6643), and quad (LMH6644) options. It is designed to offer high performance with low power consumption, making it suitable for a variety of industrial and commercial applications. The LMH6644 features a rail-to-rail output, fast settling time, and low distortion, ensuring excellent performance in high-frequency filter applications and as an ADC buffer.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| BW -3dB | AV = +1, VOUT = 200mVPP | 90 | 120 | - | MHz |
| BW 0.1dB Gain Flatness | AV = +2, RL = 150Ω to V+/2 | 15 | - | - | MHz |
| Slew Rate | AV = -1, VI = 2VPP | 100 | 135 | - | V/µs |
| Settling Time | - | - | 68 | - | ns |
| Input Offset Voltage | - | ±1 | ±5 | mV | |
| Common Mode Rejection Ratio (CMRR) | VCM Stepped from 0V to 3.5V | 72 | 95 | - | dB |
| Supply Voltage (V+ - V-) | - | - | 13.5 | V | |
| Junction Temperature | - | - | 150 | °C |
Key Features
- Low power consumption with high performance.
- Rail-to-rail output.
- Fast settling time of 68 ns.
- Low distortion and high slew rate (100 V/µs).
- No output phase reversal with CMVR exceeded.
- Output short circuit protected.
- High common mode rejection ratio (CMRR) of up to 95 dB.
- Available in various packages including SOIC, TSSOP, and VSSOP.
- Fully characterized for 3 V, 5 V, and ±5 V supplies.
Applications
- Active filters.
- ADC buffer amplifiers.
- Portable video applications.
- Current sense buffers.
- CD/DVD ROM drives.
- High-frequency filter applications.
Q & A
- What is the typical slew rate of the LMH6644?
The typical slew rate of the LMH6644 is 135 V/µs for AV = -1 and VI = 2VPP.
- What is the settling time of the LMH6644?
The settling time of the LMH6644 is 68 ns.
- What are the supply voltage options for the LMH6644?
The LMH6644 is fully characterized for 3 V, 5 V, and ±5 V supplies.
- Does the LMH6644 have output short circuit protection?
- What is the common mode rejection ratio (CMRR) of the LMH6644?
The CMRR of the LMH6644 is up to 95 dB.
- In what packages is the LMH6644 available?
The LMH6644 is available in SOIC, TSSOP, and VSSOP packages).
- What are some typical applications of the LMH6644?
The LMH6644 is used in active filters, ADC buffer amplifiers, portable video applications, current sense buffers, and CD/DVD ROM drives).
- What is the maximum junction temperature for the LMH6644?
The maximum junction temperature for the LMH6644 is 150°C).
- Does the LMH6644 have rail-to-rail output capability?
- What is the typical input offset voltage of the LMH6644?
The typical input offset voltage of the LMH6644 is ±1 mV).
