Overview
The LMH6702MF, produced by National Semiconductor (now part of Texas Instruments), is a high-performance, ultra-low distortion, wideband operational amplifier. This DC-coupled monolithic op amp is designed for wide dynamic range systems that demand exceptional signal fidelity. It utilizes National's VIP10™ complimentary bipolar process and current feedback architecture, offering unity gain stability at exceptional speeds without the need for external compensation.
The LMH6702MF is ideal for applications requiring high-speed data acquisition, such as driving the input of high-performance ADCs and DACs, and is suitable for various demanding applications including radar, communication receivers, and high-resolution video systems.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| −3 dB Bandwidth | 1.7 GHz | VOUT = 0.5 VPP |
| 2nd and 3rd Harmonics | −100/−96 dBc | 5 MHz, SOT-23-5 package |
| Input Referred Noise | 1.83 nV/√Hz | Typical |
| Settling Time to 0.1% | 13.4 ns | |
| Slew Rate | 3100 V/μs | |
| Supply Current | 12.5 mA | |
| Output Current | 80 mA | |
| Intermodulation Distortion (75 MHz) | −67 dBc | |
| Package Options | SOIC (8-pin), SOT-23-5 |
Key Features
- Ultra-low harmonic distortion and intermodulation distortion, making it suitable for high-fidelity applications.
- High bandwidth of 1.7 GHz with minimal dependence on closed-loop gain, thanks to the current feedback architecture.
- Fast settling time to 0.1% in 13.4 ns and a high slew rate of 3100 V/μs.
- Low input referred noise of 1.83 nV/√Hz.
- Unity gain stability without the need for external compensation.
- Available in SOIC and SOT-23-5 packages.
- Improved replacement for CLC409 and CLC449.
Applications
- Flash A-D Driver: Ideal for driving the input of high-speed flash ADCs.
- D-A Transimpedance Buffer: Suitable for high-speed D-A converters.
- Wide Dynamic Range IF Amp: Used in systems requiring a wideband amplifier with exceptional signal purity.
- Radar and Communication Receivers: Offers low harmonic and intermodulation distortion, making it attractive for these applications.
- Line Driver: Can be used as a line driver due to its high bandwidth and low distortion.
- High Resolution Video: Suitable for high-resolution video systems requiring high signal fidelity.
Q & A
- What is the bandwidth of the LMH6702MF?
The LMH6702MF has a −3 dB bandwidth of 1.7 GHz when VOUT = 0.5 VPP.
- What are the typical harmonic distortion levels for the LMH6702MF?
The LMH6702MF has 2nd and 3rd harmonic distortion levels of −100/−96 dBc at 5 MHz.
- What is the input referred noise of the LMH6702MF?
The input referred noise is 1.83 nV/√Hz.
- How fast does the LMH6702MF settle to 0.1%?
The settling time to 0.1% is 13.4 ns.
- What is the slew rate of the LMH6702MF?
The slew rate is 3100 V/μs.
- What are the package options for the LMH6702MF?
The LMH6702MF is available in SOIC (8-pin) and SOT-23-5 packages.
- What are some typical applications for the LMH6702MF?
Typical applications include flash A-D drivers, D-A transimpedance buffers, wide dynamic range IF amps, radar and communication receivers, line drivers, and high-resolution video systems.
- What architecture does the LMH6702MF use?
The LMH6702MF uses current feedback architecture.
- What is the recommended feedback resistor value for the LMH6702MF?
The LMH6702MF is optimized for use with a 237-Ω feedback resistor.
- Does the LMH6702MF have built-in ESD protection?
The LMH6702MF has limited built-in ESD protection; it is recommended to handle the device carefully to prevent electrostatic damage.
