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> OPA627 OPA637 precision high-speed low-noise op-amp(2)
OPA627 OPA637 precision high-speed low-noise op-amp(2)
Precision High-Speed Low Noise
THD = 0.00003% / noise = 5.6 nV/sqrHz
Here you are looking at two pieces of OPA627AU chips from TI/Burr-Brown. It is a single-op-amp device used in professional audio pre-amplifier where low noise and harmonic distortion is required.
The OPA627 Difet operational amplifiers provide a new level of performance in a precision FET op amp. When compared to the popular OPA111 op amp, the OPA627 has lower noise, lower offset voltage, and much higher speed. It is useful in a broad range of precision and high speed analog circuitry.
This little chip is particularly incredible for Audio fans.? It can be also used to upgrade Burr Brown opa604's (2604's) operational amplifiers? inside the Music Hall CD-25;?Shanling SD-100; Onix XCD-88; NAD c541i? CD players, to name a few.? Just solder the chip into the?adaptor board for DIL replacement.??Very easy ....?and you get a completely new CD player with incrediable sound! .... only with a few US dollars each.
Now at the reasonable price here than they are available at the pro-stores, why not a try on the upgrade ?
Search for internet, there are numerious articles about the upgrade of audio performance in these cd players by opa627s. eg. http:// /audioreviews/musichall/cd25.2.html
Or you may upgrade to other Op-amps as follows:
Let me know after you make a purchase, and I would amend the invoice. Note that OPA637AU differs from OPA627AU on the higher skew rate and wider gain-bandwidth product. That means the OPA637AU has a better dynamics and frequency response... However please note that OPA637AU should be used in circuitry with gain >= 5.
[Item would be dispatched as "Gift" to individuals registered as private users for no tax purpose. No invoice, therefore, would be attached. Tracking number,if any, for insured items can be provided within 24 hours upon asking.]
Retail price of OPA627AU is over GBP15 by RS plus the high S&H and no stock there . . .
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