The JRC integrated circuit by Japan Radio Company is a dual high gain operational amplifier internally compensated and constructed on a single silicon . GENERAL DESCRIPTION. □ PACKAGE OUTLINE. The NJM/ integrated circuit is a dual high-gain operational amplifier internally. See detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet. ORDERING INFORMATION. 1. TSSOP −

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AF modulator in Transmitter what is the A? On the other hand, “better” and “vintage” aren’t necessarily the same thing, even though they get jumbled together in our sorry little heads. Pinout can vary by different types so allways check from datasheet These are the pins in test circuits By all reports, these sound as good as the original. Great points made, truly.

D Datasheet, JRC NJMD PDF –

How to test the IC having part no. Originally Posted by erikl. Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Hi Tim, I was looking for ‘datasheet ‘ when Yahoo steered me to here, and now I’m a member 1 minute old!

May 24, 6. So I don’t buy the Holy Grail theory. Input sensitivity for full power for a start would help I’m just wondering where things currently stand. Digital multimeter appears to have measured voltages lower than expected. Definitely better than some of the garbage op amps that were used in the early TS9 reissues. Jun 3, Here is a Datasheet. I don’t think I went overboard datasheeet the cost on this one.


May 24, 5.

(PDF) JRC4558 Datasheet download

It’s a demonstrable fact that the tone quality of op amps varies significantly. Chippie Member Aug 21, All of the ‘ variants sounded quite similar and ‘good’.

The old pedal was not superior to the new one in any way, in fact, it was inferior in ways. May 24, 8. Turn on power triac – proposed circuit analysis 0. There are other factors like the slew rate that may contribute datasheeet well, but to me the input impedance difference is the biggie. I don’t think we’ll see a pedal guru doing any sort of semi-scientific chip preference test any time soon though If you hear a difference then by all means go with what sounds best to you.

JRC Datasheet pdf – = NJM / Dual Operational Amplifier – New Japan Radio

Dec 242: Hierarchical block is unconnected 3. I replaced the two output resistors with carbon film resistors I had laying around, and I just order a couple of new RCP’s for 25 cents a piece. What we could all really wish for is that large-scale pedal manufacturers would actually do LISTENING tests on these “identical” parts, rather than just buying whatever is cheapest at the moment.


How do you get an MCU 4558x to market quickly?

Chippie Member Aug 25, Input port and input output port declaration in top module 2. Conversion to TS – this seems to be a perennial hot one.

By continuing to use this site, you are consenting to our use of cookies. I sent Analogman my TS-9 several years ago and had him replace the chip and beef up some weak spots with no other mods and it came back as he described: On the other hand, I also think we all at least I have personally tried some of the products on the idea of “if I can afford it, what can it hurt?

Heat sinks, Part 2: I attribute the superior tone to the builder of the box.