The LMH32401 device is a programmable-gain, single-ended, input-to-differential output transimpedance amplifier for light detection and ranging (LIDAR) applications and laser distance measurement systems. The LMH32401 device can be configured in a gain of 2 kΩ or 20 kΩ. The LMH32401 device has 1.5 VPP of output swing and is designed to drive a 100-Ω load.
The LMH32401 device has an integrated 100-mA clamp that protects the amplifier and allows the device to recover rapidly from an overloaded input condition. The LMH32401 device also features an integrated ambient light cancellation circuit that can be used instead of AC coupling between the photodiode and the amplifier to save board space in addition to reducing system cost. The ambient light cancellation circuit can be disabled in cases where DC coupling is required.
The LMH32401 device can be placed in low-power mode using the EN pin to conserve power when the amplifier is not being used. Putting the amplifier in low-power mode places its output pins in a high-impedance state. This feature allows several LMH32401 amplifiers to be multiplexed to a single ADC with the EN control pin serving as the multiplexer select function.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LMH32401 450-MHz, Programmable Gain, Differential Output Transimpedance Amplifier datasheet (Rev. C) | PDF | HTML | 08 Aug 2022 |
| Application note | Time of Flight and LIDAR - Optical Front End Design (Rev. A) | PDF | HTML | 29 Apr 2022 | |
| User guide | LMH32401IRGT Evaluation Module | 13 Oct 2019 | ||
| Technical article | What you need to know about transimpedance amplifiers – part 1 | 06 May 2016 |
For additional terms or required resources, click any title below to view the detail page where available.
The TSW12QJ1600 evaluation module (EVM) is used to evaluate the ADC12QJ1600-Q1 analog-to-digital converter (ADC) with different front-end options. ADC12QJ1600-Q1 is a 12-bit ADC capable of operating at sampling rates up to 1.6 gigasample per second (GSPS) with four analog input channels.
This design (...)
| Package | Pins | Download |
|---|---|---|
| (Y) | 0 | View options |
| VQFN (RGT) | 16 | View options |
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.