The ztxp2027 looks interesting. The datasheet did not mention noise. A measurement of current noise would be important for bipolar parts since its may become dominant.
The white current noise is just base shot noise, sqrt(2qIBB) over a bandwidth B. The 1/f part is hard to predict.
AoE is short for Art of Electronics, which is not a databook.
Under what conditions (collector current, frequency)?
< https://www.amazon.de/s?k=art+of+el...fix=Art+of+,aps,100&ref=nb_sb_ss_ts-doa-p_3_7 >
Be sure to get ed. 3, and maybe the X chapters (the stuff that did not fit into the
first 1192 pages)
Gerhard
Be sure to get ed. 3, and maybe the X chapters (the stuff that did not fit into the
first 1192 pages)
Gerhard
A different caution, since that part is not made as low noise, process variations may cause noise problems but the part will still be a fine switch. You will need to test.
The low Rbb is what makes it a fine switch though - in particular the very low Vsat (45mV at Ic=1A, Ib=100mA). More base spreading resistance will increase Vsat
The ZXTP2027 is basically the ZTX951 in surface mount (the device marking is "951" even!), same for the ZXTN2018 and ZTX851
The ZXTP2027 is basically the ZTX951 in surface mount (the device marking is "951" even!), same for the ZXTN2018 and ZTX851