I need a substitute for the LMH6642 opamp
D Thread Starter dickcruz Joined Jan 7, 2007 20 Jan 9, 2007 #1 I need a substitute for the LMH6642 opamp
D Thread Starter dickcruz Joined Jan 7, 2007 20 Jan 9, 2007 #2 the substitute should be compatible with this circuit Attachments Picture1.jpg 31.7 KB Views: 23
D Distort10n Joined Dec 25, 2006 429 Jan 9, 2007 #3 What is wrong with the LMH6642? Asking for a substitute for a circuit is too broad of a question. What is the application of the circuit in your design. Voltage Feedback? Current Feedback? High Slew Rate? Low input bias? What are your critical parameters?
What is wrong with the LMH6642? Asking for a substitute for a circuit is too broad of a question. What is the application of the circuit in your design. Voltage Feedback? Current Feedback? High Slew Rate? Low input bias? What are your critical parameters?
D Thread Starter dickcruz Joined Jan 7, 2007 20 Jan 9, 2007 #4 voltage feedback. I am unable to get the part where i live. I need something with the same charecteristcs
voltage feedback. I am unable to get the part where i live. I need something with the same charecteristcs
beenthere Joined Apr 20, 2004 15,819 Jan 9, 2007 #5 Hi, What is your application? If we knew something about that, we might be able to suggest alternatives.
Hi, What is your application? If we knew something about that, we might be able to suggest alternatives.
D Distort10n Joined Dec 25, 2006 429 Jan 9, 2007 #6 There are plenty of manufacturers that have parametric searches. Since this is a photodiode application look for the following: High input impedance Low input bias current These two parameters go hand and hand. Low input bias current in the range of pA screams FET input. OPA129 has input bias currents on the order of fA.
There are plenty of manufacturers that have parametric searches. Since this is a photodiode application look for the following: High input impedance Low input bias current These two parameters go hand and hand. Low input bias current in the range of pA screams FET input. OPA129 has input bias currents on the order of fA.