COSINE PART
COS721SR is a Low-Noise Op-Amp from COSINE (科山芯创) in a SOP8 package.
The manufacturer's 2025 cross-reference table does not publish a direct imported equivalent for this part number. If you are looking for a replacement, send us the part number and we will confirm the matching COSINE option and the differences to check.
Related parts · FAQ · Request a quote
COS721SR — Low-Noise Op-Amp
COS721SR is supplied by Shenzhen Jingteng Electronics (JTDZ Tech) as a domestically sourced option for this device class. 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.
Device information
| Part number | COS721SR |
| Manufacturer | COSINE (科山芯创) |
| Device class | Low-Noise Op-Amp |
| Package | SOP8 |
| Pin Count | 8 |
| Verified and new, traceable date code | |
| Stock | In stock, ships within 24 hours |
| Description | Low-Noise Op-Amp, SOP8 package. |
What to verify before substituting COS721SR
These are the parameters that decide whether a cross-reference works in practice. Run through the list against the datasheet before releasing a change:
- Input voltage noise density at the frequency your signal occupies, plus the 1/f corner
- Current noise and its contribution across the source impedance — the reason a low-voltage-noise part can still be wrong here
- Gain-bandwidth product and closed-loop bandwidth
- Total harmonic distortion at the output amplitude you need
- Input bias current and offset voltage
- Output drive into the real load
- Package and pinout, and any required supply decoupling
Typical applications
- Audio preamplifiers and microphone front ends
- Sensor and transducer interfaces
- PLL loop filters and VCO control
- Precision instrumentation
- Photodiode and low-level signal amplification
- Communication receive paths
Other COSINE Low-Noise Op-Amp alternatives
The manufacturer's 2025 table does not publish a direct imported equivalent for COS721SR. These are the cross-references published for other parts in the same device class — send us your part number and we will confirm which one matches.
| COSINE part | Cross-references to |
|---|---|
| COS822SR | LMV822MX/NOPB, AD8632 |
| COS2374SR | OPA2374AID, MCP6492 |
| COS721TR | LMV721IDBVR |
| COS722SR | LMV722IDR |
| COS724SR | MCP6024 |
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 |
|---|---|---|---|
| COS721TR | SOT23-5 | LMV721IDBVR | Same series |
| COS822SR | SOP8 | LMV822MX/NOPB, AD8632 | Low-Noise Op-Amp |
| COS2374SR | SOP8 | OPA2374AID, MCP6492 | Low-Noise Op-Amp |
| COS722SR | SOP8 | LMV722IDR | Low-Noise Op-Amp |
| COS722MR | MSOP8 | — | Low-Noise Op-Amp |
| COS724SR | SOP14 | MCP6024 | Low-Noise Op-Amp |
| COS724TR | TSSOP14 | — | Low-Noise Op-Amp |
Frequently asked questions
What is COS721SR?
COS721SR is a Low-Noise Op-Amp from COSINE (科山芯创) in a SOP8 package.
Do you have a cross-reference for COS721SR?
The manufacturer's 2025 selection table does not publish a direct imported equivalent for this part number. Send us the part number from your BOM and we will confirm the matching COSINE option and the differences to check.
What is the MOQ and lead time for COS721SR?
MOQ 1 pc. COS721SR ships within 24 hours from stock and quotes are returned within 2 business hours.
Request a quote for COS721SR
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.
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