The PS8551AL4 is an optically coupled isolation amplifier that uses an IC with a high-accuracy sigma-delta A/D converter and a GaAIAs light-emitting diode with high-speed response and high luminance efficiency on the input side, and an IC with a high-accuracy D/A converter on the output side. The PS8551AL4 is designed specifically for high common mode transient immunity (CMTI) and high linearity (nonlinearity). The PS8551AL4 is designed for current and voltage sensing.


  • Non-linearity (NL200 = 0.35% MAX.)
  • High common mode transient immunity (CMTI = 10 kV/μs MIN.)
  • High isolation voltage (BV = 5 000 Vr.m.s.)
  • Gain tolerance (G = 7.92 to 8.08 (±1%)) Gain: 8 V/V TYP.
  • Package: 8-pin DIP lead bending type (Gull-wing) for long creepage distance for surface mount (L4)
  • Embossed tape product: PS8551AL4-E3: 1 000 pcs/reel
  • Pb-Free product
  • Safety standards UL approved: No. E72422 CSA approved: No. CA 101391 (CA5A, CAN/CSA-C22.2 60065, 60950) SEMKO approved (EN60065, EN60950) DIN EN60747-5-5 (VDE0884-5) approved (Option)




Type Title Date
Datasheet PDF 361 KB 日本語
Product Advisory PDF 151 KB 日本語
Brochure PDF 5.20 MB 日本語
Product Reliability Report PDF 190 KB
Brochure PDF 5.14 MB 日本語
Brochure PDF 3.78 MB 日本語
Application Note PDF 231 KB 日本語
Application Note PDF 957 KB
8 items

Design & Development