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.
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.