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The LTC6561HUF is a low-noise, four-channel, cross-impedance amplifier (TIA) with a bandwidth of 220MHz. The LTC6561HUF multichannel transimpedance amplifier features low noise, high impedance and low power consumption, making it suitable for LIDAR receivers using avalanche photodiodes (APDs).

The LTC6561HUF amplifier has a cross-impedance gain of 74 kω and a linear input current range of 30µA. Using an APD input circuit with a total capacitance of 2pF, the input current noise density at 200MHz is 4.5pA/√Hz. In the case of lower capacitance, noise and bandwidth are further improved. The device requires only a 5V single power supply and consumes only 220mW.

Basic parameter

Product: LTC6561HUF

Number of channels: 4 channels

3dB bandwidth: 220 MHz

Vos - Input bias voltage: 12 mV

In - Input noise current density: 4.8 pA/sqrt Hz

Supply voltage: 4.75V to 5.25V

Working power supply current: 36.3mA

Operating temperature: -40 °C to + 125°C

Installation style: SMD/SMT

Package/box: QFN-24

Impedance: 236 Ohms

Output type: Single Ended

Pd- Power dissipation: 200 mW

Product type: Transimpedance Amplifiers

PSRR - Power rejection ratio: 25 dB

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