ADI/TI Precision & General-Purpose Op-Amp Replacement
OPA2188 / OPA2333 / LM358 / LM324 → RUNIC RS855x / SGMICRO SGM358/SGM324 — high pin-to-pin ratio for zero-drift and general-purpose op-amps, ample domestic stock, lead time <4 weeks, significant cost advantage (quote for latest pricing).
Application Scenario
For signal-chain designs using ADI/TI precision and general-purpose op-amps (industrial instruments, medical devices, servo drives, DAQ). ADI/TI analog lead times extend to 30–36 weeks with high prices; replacement window 15–30:1; zero-drift op-amps (OPA2188 class) offer the highest replacement value.
System Diagram Placeholder
Placeholder: sensor signal → op-amp conditioning (RUNIC RS855x / SGMICRO SGM358/SGM324) → ADC sampling → MCU. Zero-drift and general-purpose op-amps are drop-in per designator. Full schematic in preparation — contact us.
Replacement Matrix
| Original | Replacement | Quote | Savings |
|---|---|---|---|
| OPA2188 (ADI) | RS8552XK (RUNIC) | Quote (domestic stock) | ~ -85% |
| OPA2333 (TI) | RS8551XB (RUNIC) | Quote | ~ -85% |
| LM358 (TI) | SGM358YS/TR (SGMICRO) | Quote | ~ -80% |
| LM358 (TI) | RS358 (RUNIC) | Quote | ~ -75% |
| LM324 (TI) | SGM324YS/TR (SGMICRO) | Quote | ~ -85% |
| LMV321 (TI) | SGM321YN5/TR (SGMICRO) | Quote | ~ -80% |
| TLV9002 (TI) | RS722P (RUNIC) | Quote | ~ -80% |
| TS321 (ST) | RS721P (RUNIC) | Quote | ~ -80% |
Core Components
- RUNIC RS8552XK — dual zero-drift op-amp, MSOP-8, targets OPA2188
- RUNIC RS8551XB — single zero-drift op-amp, SOT-23-5, targets OPA2333
- SGMICRO SGM358YS/TR — general-purpose dual op-amp, SOIC-8, LM358 replacement
- SGMICRO SGM324YS/TR — quad op-amp, SOIC-14, LM324 replacement
- RUNIC RS722P — RRIO dual op-amp, SOP-8, TLV9002 replacement
BOM Notes
- Zero-drift (OPA2188→RS8552) verified; general-purpose (LM358→SGM358) drop-in without validation
- Audio op-amps (TL072/NE5532) need board-change evaluation, 3–4 star match
- Pilot-verify (offset/drift/BW) before batch switch per designator
Conclusion & Recommendation
Both zero-drift and general-purpose paths are mature (80%+ pin-to-pin), domestic lead <4 weeks, price gap 15–30:1. Validate and switch within 1–3 months; lock domestic long-term supply for precision parts like OPA2188.
📌 Source: Compiled from official sites and public channels (2026-08-24): RUNIC/SGMICRO product pages, LCSC stock, public pricing.