TS944ID STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STMicroelectronics TS944ID is a quad rail-to-rail output operational amplifier operating from 3V to 14V supply with 85 dB CMRR and 0.15 nA bias current in a 14-pin SO package. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- TS944ID Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Rail-to-rail output swing on 3V to 14V single or dual supply for maximum dynamic range in low-voltage systems
- Ultra-low bias current of 0.15 nA enabling high-impedance sensor signal conditioning without loading error
- 85 dB typical CMRR with frequency compensation for stable operation in noisy industrial and instrumentation environments
Applications
The TS944ID quad op-amp is used in battery-powered instrumentation, medical monitoring equipment, and active filter designs where rail-to-rail output swing and low bias current are required at supply voltages from 3V to 14V. Its four channels in a single 14-pin SO package reduce board space in multichannel sensor conditioning circuits. The 85 dB CMRR and internal frequency compensation support stable operation in differential measurement and signal buffering applications.
Specifications
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.00015 µA |
| Bias Current-Max (IIB) @25C | 0.00015 µA |
| Common-mode Reject Ratio-Min | 60dB |
| Common-mode Reject Ratio-Nom | 85dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 10000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| Number of Functions | 14 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 3000V/us |
| Slew Rate-Nom | 4500V/us |
| Supply Current-Max | 0.0074mA |
| Supply Voltage Limit-Max | 12V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Unity Gain BW-Nom | 10 |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TS944ID:
Frequently Asked Questions
What supply voltage range does the TS944ID support, and how does rail-to-rail output benefit low-voltage sensor designs?
The TS944ID operates from 3V to 14V single supply or equivalent dual supply, covering both 3.3V and 5V battery-powered systems. Rail-to-rail output allows the amplifier to swing within millivolts of each supply rail, maximizing the usable signal range for 12-bit ADCs and reducing headroom loss in precision sensor conditioning circuits.
In a multichannel ECG front-end, how does the 0.15 nA bias current of TS944ID prevent electrode loading errors?
The TS944ID bias current of 0.15 nA is low enough to drive high-impedance biopotential electrodes above 1 MΩ without causing measurable DC offset or signal attenuation. This makes it suitable for electrochemical and medical sensing inputs where a 10 mV offset budget must be maintained across four channels simultaneously in a 14-pin SO package.
When does using a quad amplifier like TS944ID save cost compared to four single op-amps in an active filter design?
Integrating 4 op-amp stages into one 14-pin SO package cuts passive component count, reduces PCB routing complexity, and lowers total BOM cost by eliminating three separate packages. The TS944ID's 60 dB minimum CMRR and internal frequency compensation allow 2nd-order Sallen-Key filters to be built directly without extra compensation networks, saving design time in audio and signal processing boards.
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