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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flmh34400″>View Datasheet
Texas Instruments LMH34400 Transimpedance Amplifier is a fixed-gain, single-ended transimpedance amplifier for light detection and ranging (LIDAR) applications and laser distance measurement systems. The LMH34400 can produce 1.0VPP of output swing and has an input referred noise of 50nARMS.
The LMH34400 has an integrated 100mA clamp that protects the amplifier and allows the device to recover rapidly from an overloaded input condition. The LMH34400 also features an integrated ambient light cancellation (ALC) circuit that can be used instead of AC coupling between the photodiode and the amplifier to save board space and system cost. The ALC loop should be turned off in cases where frequency signals content less than 400kHz needs to be measured.
The Texas Instruments LMH34400 can be placed in low-power mode using the EN pin to conserve power when the amplifier is unused. This feature allows several LMH34400 amplifiers to be multiplexed to the input of the next stage of the receive signal chain, with the EN control pin serving as the multiplexer select function. The LMH34400 offers single-ended output and is optimized for time-to-digital converter (TDC) based LIDAR systems.
