component
COS721TR
Public Made by Adomby adom
COSINE Operational Amplifier, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownCOS721TR
COSINE · Operational Amplifier · SOT-23-5
COS721TR from COSINE, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT | output | Amplifier output. Output voltage swing extends to within millivolts of each supply rail (typ 1mV with RL=100kΩ, 8mV with RL=10kΩ, 40mV with RL=2kΩ). Short-circuit source/sink current ~21/22 mA. |
| 2 | -Vs | power_in | Negative power supply or ground. Total supply (+Vs to -Vs) is 2.5V to 5.5V (absolute max 6.0V). If not connected to ground, bypass with a 0.1μF ceramic capacitor placed as close to the pin as possible. |
| 3 | +IN | input | Non-inverting input of the amplifier. Voltage range extends from -Vs -0.3V to +Vs +0.3V. Rail-to-rail input; input bias current typ ±2.5 pA. Input terminals are diode-clamped to the supply rails; limit current to 10mA if input swings >0.5V beyond a rail. |
| 4 | -IN | input | Inverting input of the amplifier. Voltage range extends from -Vs -0.3V to +Vs +0.3V. Rail-to-rail input; input bias current typ ±2.5 pA. Input terminals are diode-clamped to the supply rails; limit current to 10mA if input swings >0.5V beyond a rail. |
| 5 | +Vs | power_in | Positive power supply, 2.5V to 5.5V (single supply) or ±1.25V to ±2.75V (dual supply). Bypass with a 0.1μF ceramic capacitor placed as close to the pin as possible; a 2.2μF tantalum may be added for improved performance. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOT-23-5 |
| Category | Op-amp/Cmp |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
COS721TRCOS721TRSR
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Power Supply: +Vs to -Vs | 6 | V | 3 | ||||
| Input Voltage (referred to supply rails: -Vs -0.5V to +Vs + 0.5V) | -0.5 | 0.5 | V | Offset from -Vs / +Vs as printed | 3 | ||
| Input Current | 10 | mA | Input signals beyond supply rails by more than 0.5V, current-limited | 3 | |||
| Storage Temperature Range | -65 | 150 | °C | 3 | |||
| Junction Temperature | 150 | °C | 3 | ||||
| Operating Temperature Range (absolute maximum table) | -40 | 125 | °C | 3 | |||
| ESD Susceptibility, HBM | 4000 | V | HBM | 3 | |||
| DC Supply Voltage | 2.5 | 5.5 | V | 3 | |||
| Operating Ambient Temperature | -40 | 85 | °C | 3 | |||
| Operating Voltage Range | 2.5 | 5.5 | V | 4 | |||
| Input Offset Voltage | VOS | -5 | 0.6 | 5 | mV | 4 | |
| Input Offset Voltage Drift | ΔVOS/ΔT | -2 | 2 | μV/°C | -40 to 125°C | 4 | |
| Input Bias Current | IB | -2.5 | 2.5 | pA | 4 | ||
| Input Offset Current | IOS | -2.5 | 2.5 | pA | 4 | ||
| Common-Mode Voltage Range | VCM | -0.1 | 5.6 | V | VS = 5.5V | 4 | |
| Common-Mode Rejection Ratio | CMRR | 125 | dB | VCM =0.1V to 4.9V | 4 | ||
| Open-Loop Voltage Gain | AOL | 120 | dB | VO=0.2V to 4.8V | 4 | ||
| Output Voltage Swing from Rail | 1 | mV | RL=100kΩ | 4 | |||
| Output Voltage Swing from Rail | 8 | mV | RL=10kΩ | 4 | |||
| Output Voltage Swing from Rail | 40 | mV | RL=2kΩ | 4 | |||
| Power Supply Rejection Ratio | PSRR | 80 | 100 | dB | VS = +2.5V to +5.5V | 4 | |
| Short-Circuit Current, Sourcing | ISR | 21 | mA | Sourcing | 4 | ||
| Short-Circuit Current, Sinking | ISK | 22 | mA | Sinking | 4 | ||
| Quiescent Current / Amplifier | IQ | 650 | μA | 4 | |||
| Gain Bandwidth Product | GBWP | 10 | MHz | G=+1 | 4 | ||
| Slew Rate | SR | 7.5 | V/μs | G = +1, 2V Output Step | 4 | ||
| Voltage Noise Density | en | 12 | nV/√Hz | f=1kHz | 4 | ||
| Package Thermal Resistance, junction-to-ambient (SOT23-5) | RθJA | 190 | °C/W | SOT23-5 package | 3 |
CAD (KiCad official)
- Symbol:
COS721TR - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
cos721tr-etched.step/cos721tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cos721tr.step/cos721tr.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
cos721tr.step |
85 KB | You want the bare part, or you mark your own boards. |
cos721tr-etched.step |
1.5 MB | You want the part with COS721TR already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 369 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: COSINE datasheet (10 pp, sha256
c3bf767fb360554e, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).