The PS9551AL4 is an optically isolated Delta – Sigma Modulator that includes high-Accuracy A/D convertor and converts an analog voltage input into one-bit data stream. PS9551AL4 provides Effective Number of Bit (ENOB) is 12bits (typ) with a Sinc3digital filter. The PS9551AL4 is designed specifically for high common mode transient immunity (CMR) and high linearity (nonlinearity). The PS9551AL4 is suitable for current sensing and voltage sensing in motor drives.


  • Internal Reference Voltage Tolerance (GE = ±1% MAX.)
  • Effective Number of Bit (ENOB = 12 bits TYP.)
  • Operating Ambient Temperature (TA = −40 to 105°C)
  • Non-linearity (INL = 0.14% MAX.)
  • Input Offset Voltage (VOS = 3 mV MAX.)
  • Input Offset Voltage Drift vs. Temperature (⏐dVos/dTA⏐ = 2 μV/°C TYP.)
  • Output Clock Frequency (fCLK = 10 MHz TYP.)
  • High common mode transient immunity (CMR= 15 kV/μs MIN.)
  • Package: 8-pin DIP lead bending type (Gull-wing) for long creepage distance for surface mount (L4)
  • Embossed tape product: PS9551AL4-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 (EN 60065, EN60950) DIN EN 60747-5-5 (VDE 0884-5) approved (Option)


PDF 848 KB 日本語 Datasheet
PDF 5.20 MB 日本語 Brochure
PDF 191 KB Product Reliability Report
PDF 5.14 MB 日本語 Brochure
PDF 3.78 MB 日本語 Brochure
PDF 957 KB Application Note
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Design & Development