CROSS-REFERENCE ALTERNATIVE
COS2177MR/UA is a Chinese-manufactured 36V Precision Op-Amp from COSINE (科山芯创) that cross-references to OP2177ARMZ-R (ADI).
It is a MSOP8 device positioned as a domestic-supply option against the imported: shorter lead times, no allocation risk and a stable price for volume production. Because the parts are not pin-identical in every case, the engineering checklist below lists what to verify before you commit.
Cross-reference · Before you substitute · Related parts · FAQ · Request a quote
COS2177MR/UA — 36V Precision Op-Amp, alternative to OP2177ARMZ-R
COS2177MR/UA is supplied by Shenzhen Jingteng Electronics (JTDZ Tech) as a domestically sourced option for OP2177ARMZ-R (ADI). Imported parts in this class are frequently subject to allocation, long lead times and steep price swings. A Chinese-manufactured equivalent removes that exposure: the parts are production-validated in industrial, consumer and automotive designs and ship from stock on a short lead time.
Cross-reference chart — which imported parts does COS2177MR/UA replace?
Every imported part number that COS2177MR/UA is published as a cross-reference alternative to, per the COSINE (科山芯创) 2025 selection table:
| imported part number | brand | Replaced by (this part) |
|---|---|---|
| OP2177ARMZ-R | ADI | COS2177MR/UA |
Cross-reference means functional equivalence in the same application role. It is not a blanket claim of pin-for-pin identity — confirm package, pinout and the parameters listed below before you release a design change.
Device information
| Part number | COS2177MR/UA |
| Manufacturer | COSINE (科山芯创) |
| Device class | 36V Precision Op-Amp |
| Package | MSOP8 |
| Pin Count | 8 |
| Verified and new, traceable date code | |
| Stock | In stock, ships within 24 hours |
| Description | 36V Precision Op-Amp, MSOP8 package. |
What to verify before substituting COS2177MR/UA
These are the parameters that decide whether a cross-reference works in practice. Run through the list against the datasheet before releasing a change:
- Supply voltage range (±2 V to ±18 V class) and whether the design needs the full 36 V swing
- Input offset voltage and offset drift over temperature — the dominant error term in a precision stage
- Input bias and offset current, and the resulting error across the source impedance you actually use
- Gain-bandwidth product and slew rate at your closed-loop gain
- Input common-mode range and output voltage swing against the required headroom
- Quiescent current per amplifier and total package dissipation
- Package and pinout (single/dual/quad) — confirm the pin assignment matches before swapping
Typical applications
- Industrial process control and 4–20 mA loops
- Precision sensor signal conditioning
- Instrumentation and data-acquisition front ends
- Medical and laboratory equipment
- Test and measurement instruments
- Audio and active-filter stages
Related COSINE parts and alternatives
Other {BRAND} parts in the same device family or the same device class — useful when you are cross-referencing a whole BOM rather than a single line item.
| COSINE part | Package | Cross-references to | Relation |
|---|---|---|---|
| COS2177SR | SOP8 | OP2177ARZ, OPA2277, OP727 | Same series |
| COS2177MR/U | MSOP8 | OP2177ARMZ-R | Same series |
| COSOP07SR | SOP8 | OP07CSZ, OP07CDR, OP1177ARZ | 36V Precision Op-Amp |
| COS1177SR | SOP8 | OP07CSZ, OP07CDR/OPA277, OP1177ARZ | 36V Precision Op-Amp |
| COS1177MR | MSOP8 | OP1177ARMZ-R7, OPA277 | 36V Precision Op-Amp |
| COS4177TR | TSSOP14 | OP4177ARU, OPA4277, OP747 | 36V Precision Op-Amp |
| COS4177SR | SOP14 | OP4177, OPA4277 | 36V Precision Op-Amp |
| COS4277SR | SOP14 | OP4177, OPA4277 | 36V Precision Op-Amp |
Frequently asked questions
What does COS2177MR/UA replace?
According to the COSINE (科山芯创) 2025 cross-reference table, COS2177MR/UA is published as an alternative to OP2177ARMZ-R (ADI).
Is COS2177MR/UA a pin-to-pin drop-in for OP2177ARMZ-R?
Cross-reference means the part is intended for the same application role; it is not a blanket guarantee of pin-for-pin identity. Check package, pinout and the parameters listed under “What to verify” above, or send us your BOM and we will confirm before you commit.
Can you supply the OP2177ARMZ-R as well?
Yes. We source both the imported and the Chinese-manufactured alternative, so you can compare price, lead time and availability on the same quote.
What is the MOQ and lead time for COS2177MR/UA?
MOQ 1 pc. COS2177MR/UA is held in stock and ships within 24 hours; quotes are returned within 2 business hours. We ship worldwide including India, Vietnam and the Middle East.
Request a quote for COS2177MR/UA
Send us the part number and target quantity — we reply within 2 business hours with price, stock and a cross-reference confirmation.
Request a quote More Amplifiers / Data Conversion
Genuine original parts guaranteed — traceable lot & date code, X-ray / visual inspection and third-party test supported before shipment.
Related Products
