¿ªÔÆÌåÓýWould you like to look at the Idea i posted in the Temp file(photo amplifier 15A) and somebody else reproduced it with different component values(photo amp) i think you may have to rethink your TIA noise strategy if you understand how it works. ?Please note the following correction:= ?[(wc)**2 = 1/(R1RL)]. ?Please attempt to show that the expression I have just quoted is the notch condition for the op. amp. n/w. comments are most welcome Michael To: LTspice@... From: LTspice@... Date: Thu, 4 Aug 2016 11:03:19 +0200 Subject: Re: [LTspice] Re: Need help to design a transimpedance amplifier ? Check the datasheet for the OPA 2846: Vn=1.2nV/sqrtHz, In=2.8pA/sqrtHz that means the OSI (optimum source impedance) is 428 ohms. The 100k resistors in the non-inverting inputs alone introduce 88uV (@100kHz BW) What is the transducer's impedance? Le 04/08/2016 ¨¤ 09:31,
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