The invention provides a
transimpedance amplifier chip and a light receiving module. The
transimpedance amplifier chip comprises a photoelectric
detector, a
filter capacitor and a
transimpedance amplifier chip which are packaged in the same packaging body, wherein the trans-impedance
amplifier chip comprises a built-in filter
resistor region and a trans-impedance
amplifier device region which areisolated through a
deep trench, a filter
resistor is formed in the built-in filter
resistor region, two ends of the filter resistor are led out to corresponding bonding pads through
metal layer leads,and the built-in filter resistor and each
metal layer in the built-in filter resistor region are not connected with a substrate; and devices forming a transimpedance
amplifier are formed in the transimpedance amplifier device region. According to the invention, the filter circuit formed by the
filter capacitor and the filter resistor is added to reduce the influence of an external Wi-Fi
signal onan optical
receiver and improve the sensitivity of the optical
receiver; the filter resistor is arranged in the trans-impedance amplifier chip, so that the use cost of the off-
chip resistor is saved,the space limitation of packaging and routing is eliminated, the packaging and routing scheme is simplified, and the practical value is high.