The LMH6629 is a high-speed, ultra-low noise amplifier designed for applications requiring wide bandwidth with high gain and low noise such as in communication, test and measurement, optical and ultrasound systems.
The LMH6629 operates on 2.7-V to 5.5-V supply with an input common mode range that extends below ground and outputs that swing to within 0.8 V of the rails for ease of use in single supply applications. Heavy loads up to ±250 mA can be driven by high-frequency large signals with the LMH6629’s –3dB bandwidth of 900 MHz and 1600 V/µs slew rate. The LMH6629 (WSON-8 package only) has user-selectable internal compensation for minimum gains of 4 or 10 controlled by pulling the COMP pin low or high, thereby avoiding the need for external compensation capacitors required in competitive devices. Compensation for the SOT-23-5 package is internally set for a minimum stable gain of 10 V/V. The WSON-8 package also provides the power-down enable/disable feature.
The low-input noise (0.69 nV/√Hz and 2.6 pA/√Hz), low distortion (HD2/HD3 = −90 dBc/−94 dBc) and ultra-low DC errors (800 µV VOS maximum over temperature, ±0.45 µV/°C drift) allow precision operation in both ac- and dc-coupled applications.
The LMH6629 is fabricated in Texas Instruments’ proprietary SiGe process and is available in a 3 mm × 3 mm 8-pin WSON package as well as the SOT-23-5 package.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LMH6629 Ultra-Low Noise, High-Speed Operational Amplifier with Shutdown datasheet (Rev. I) | PDF | HTML | Dec 5, 2014 |
| Application brief | LiFi: TI High-Speed Products for Optical Wireless Communication | PDF | HTML | Aug 7, 2023 | |
| Application note | High Speed ADCs and Amplifiers for Flow Cytometry Applications | Oct 12, 2020 | ||
| Technical article | 3 common questions when designing with high-speed amplifiers | PDF | HTML | Jul 17, 2020 | |
| Application note | Transimpedance Amplifiers (TIA): Choosing the Best Amplifier for the job (Rev. A) | May 16, 2017 | ||
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | Mar 28, 2017 | |
| Application note | Considerations for High-Gain Multistage Designs | May 13, 2013 | ||
| Application note | OA-14 Improving Amplifier Noise for High 3rd Intercept Amplifiers (Rev. F) | May 1, 2013 | ||
| Application note | AN-1604 Decompensated Operational Amplifiers (Rev. B) | May 1, 2013 |
For additional terms or required resources, click any title below to view the detail page where available.
The LMH6629 evaluation board is designed to aid in the characterization of Texas Instruments High Speed LMH6629 Low Noise Operational Amplifier. Use the evaluation board as a guide for high frequency layout and as a tool to aid in device testing and characterization.
Texas Instruments offers this unpopulated Evaluation Board to aid in the evaluation and testing of high-speed Op Amp that are offered in the 5-/6-Pin SOT-23 package. This 4 layer board is designed to improve speed and reduce harmonic distortion by careful placement and routing of components and (...)
Using the LMH6629 and OPA684 op amps, this reference design deals with the difficulties and limitations of developing very high gain, multistage amplifier circuits. Supported by a full scale application report including theory, simulations, board design and evaluation, this design can be easily (...)
This reference design is a demonstration of a SONAR receive-path sub-system using the integrated analog front end (AFE) AFE5809. AFE5809 features eight channels of analog signal conditioning (LNA + VCAT + PGA) and digital processing (ADC + digital demodulator) that brings a high (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
| WSON (NGQ) | 8 | Ultra Librarian |
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