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.
