COS2177SR - OP2177ARZ Alternative | COSINE 36V Precision Op-Amp
- The COS1177(single), COS2177(dual)and COS4177(quad)are low power, precision operational amplifiers operated on ±2.25V to ±18V supplies. The COSx177 family has very low input offset voltage(50μV)maximum that is obtained by trimming at the wafer stage. These low offset voltages generally eliminate any need for external nulling. The COSx177 also features low input bias current and high open-loop gain. The low offset and high open-loop gain make the COSx177 particularly useful for high gain instrumentation applications. The wide input voltage range of ±13 V minimum combined with a high CMRR of 125dB and high input impedance provide high accuracy in the noninverting circuit config- uration. Excellent linearity and gain accuracy can be maintained even at high closed-loop gains. Stability of offsets and gain with time or variations in temperature is excellent. The accuracy and stability of the COSx177, even at high gain, combined with the freedom from external nulling have made the COSx177 an ideal choice for instrumentation applications.
- • Low Offset Voltage: 50µV(Max.) • Low Drift: 0.2µV/ºC • Low Input Bias Current: 2nA(Max.) • Gain Bandwidth Product: 2MHz • Wide Supply Range：±2.25V ~ ±18V • Low Quiescent Current: 330µA • Slew Rate: 0.7V/µs • Unity Gain Stable • Input Over-Voltage Protection • Extended Temperature Ranges From -40°C to +125°C • Small Packaging • COS1177 available in SOP8/MSOP8 COS2177 available in SOP8/MSOP8 COS4177 available in SOP14/TSSOP14
CROSS-REFERENCE ALTERNATIVE
COS2177SR is a Chinese-manufactured 36V Precision Op-Amp from COSINE (科山芯创) that cross-references to OP2177ARZ (ADI), and also to OPA2277, OP727.
It is a SOP8 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
COS2177SR — 36V Precision Op-Amp, alternative to OP2177ARZ
COS2177SR is supplied by Shenzhen Jingteng Electronics (JTDZ Tech) as a domestically sourced option for OP2177ARZ (ADI), OPA2277 (TI), OP727. 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 COS2177SR replace?
Every imported part number that COS2177SR 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) |
|---|---|---|
| OP2177ARZ | ADI | COS2177SR |
| OPA2277 | TI | COS2177SR |
| OP727 | — | COS2177SR |
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 | COS2177SR |
| Manufacturer | COSINE (科山芯创) |
| Device class | 36V Precision Op-Amp |
| Package | SOP8 |
| Pin Count | 8 |
| Verified and new, traceable date code | |
| Stock | In stock, ships within 24 hours |
| Description | 36V Precision Op-Amp, SOP8 package. |
What to verify before substituting COS2177SR
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 |
|---|---|---|---|
| COS2177MR/U | MSOP8 | OP2177ARMZ-R | Same series |
| COS2177MR/UA | 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 COS2177SR replace?
According to the COSINE (科山芯创) 2025 cross-reference table, COS2177SR is published as an alternative to OP2177ARZ (ADI), OPA2277 (TI), OP727.
Is COS2177SR a pin-to-pin drop-in for OP2177ARZ?
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 OP2177ARZ 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 COS2177SR?
MOQ 1 pc. COS2177SR 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 COS2177SR
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.
COS2177SR-OP2177ARZ-ALTERNATIVE-COSINE-36V-PRECISION-OP-AMP — COSINE to OP2177ARZ
The COS2177SR-OP2177ARZ-ALTERNATIVE-COSINE-36V-PRECISION-OP-AMP is listed by Jingteng Electronics as a COSINE analog IC in the Power, Amplifiers & Data-Conversion ICs category. We supply it as a genuine, original part sourced through verified channels, suitable for buyers who need reliable, fast-turn component sourcing.
Typical Applications
As an analog IC, this component is commonly designed into equipment that relies on Power, Amplifiers & Data-Conversion ICs. These analog ICs amplify signals and convert between analog and digital domains. They are found in sensor signal chains, audio and instrumentation, data acquisition and precision measurement across industrial, medical and communications products.
Authenticity & Sourcing
Jingteng supplies COSINE COS2177SR-OP2177ARZ-ALTERNATIVE-COSINE-36V-PRECISION-OP-AMP as genuine and original stock. COSINE is a third-party trademark referenced here only to identify the component; Jingteng is an independent distributor and does not act as an agent of the component manufacturer.
Request a Quote for COS2177SR-OP2177ARZ-ALTERNATIVE-COSINE-36V-PRECISION-OP-AMP
Need pricing or availability for COS2177SR-OP2177ARZ-ALTERNATIVE-COSINE-36V-PRECISION-OP-AMP? Send the part number and your target quantity and our team replies within 2 business hours with a quote.
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