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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsTS941ID
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TS941ID - STMicroelectronics

Manufacturer Part Number
TS941ID
Manufacturer
STMicroelectronics
Allelco Part Number
32D-TS941ID
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
8,390 pcs available, New & Original
Parts Description
IC OPAMP GP 1 CIRCUIT 8SOIC
Package
8-SOIC
Data sheet
TS941ID.pdf

Datasheets

TS941x(A,B).pdf
RoHs Status
ROHS3 Compliant
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In stock: 8390

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Specifications

TS941ID Tech Specifications
STMicroelectronics - TS941ID technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - TS941ID

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply Span (Min) 2.5 V
Voltage - Supply Span (Max) 10 V
Voltage - Input Offset 10 mV
Supplier Device Package 8-SOIC
Slew Rate 0.0045V/µs
Series -
Package / Case 8-SOIC (0.154", 3.90mm Width)
Package Tube
Output Type Rail-to-Rail
Product Attribute Attribute Value
Operating Temperature -40°C ~ 85°C
Number of Circuits 1
Mounting Type Surface Mount
Gain Bandwidth Product 10 kHz
Current - Supply 1.2µA
Current - Output / Channel 5 mA
Current - Input Bias 1 pA
Base Product Number TS941
Amplifier Type General Purpose

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

How does the TS941ID's input offset voltage of 10 mV impact precision analog signal conditioning in low-level sensor applications, and what design considerations are necessary to mitigate its effects?
The TS941ID exhibits an input offset voltage of 10 mV, which can introduce significant error in precision applications involving low-amplitude signals from sensors such as thermocouples or strain gauges. This offset may cause output drift or measurement inaccuracies unless compensated. Designers should consider using chopper-stabilized amplifiers or implementing external nulling circuits when sub-millivolt accuracy is required. For applications where this offset is acceptable, ensuring adequate signal gain before amplification can help reduce relative error impact.
What is the maximum allowable supply voltage for reliable operation of the TS941ID, and how does exceeding this limit affect device behavior or long-term reliability?
The TS941ID supports a supply voltage span from 2.5 V to 10 V, with the upper limit set at 10 V for guaranteed performance. Operating beyond 10 V risks exceeding the absolute maximum ratings, potentially leading to internal oxide breakdown, latch-up, or degraded long-term reliability. Even within rated limits, higher supply voltages increase power consumption—this model draws 1.2 µA quiescent current—and may elevate electromagnetic interference susceptibility due to increased signal swing.
In battery-powered IoT edge devices, how does the TS941ID’s ultra-low supply current influence system lifetime, and what trade-offs exist between power savings and dynamic performance?
With a quiescent current of only 1.2 µA, the TS941ID enables extended battery life in energy-constrained environments like wireless sensor nodes. However, this comes at the cost of limited slew rate (0.0045 V/µs) and gain bandwidth product (10 kHz), restricting its suitability for high-frequency or fast-transient applications. Designers must balance duty cycling strategies with amplifier response requirements—using sleep modes effectively while ensuring wake-up time remains compatible with expected signal dynamics.
Compare the TS941ID with the LMV321 in terms of noise performance and input bias current for use in precision DC-coupled instrumentation front-ends.
While both are rail-to-rail general-purpose op amps, the TS941ID offers superior input bias current (1 pA typical), making it more suitable for high-impedance sources compared to the LMV321’s microamp-level input bias current. However, the LMV321 typically features lower voltage noise density (around 40 nV/√Hz vs. TS941ID’s higher value, though exact figures depend on datasheet revision). Thus, for DC-precision applications, TS941ID favors low leakage over ultra-low noise; if noise dominates concern, alternatives like OPA333 might be preferable despite higher bias current.
Can the TS941ID drive capacitive loads directly without stability issues, and under what conditions might compensation components become necessary?
The TS941ID has limited internal compensation optimized for unity-gain stability, but driving capacitive loads greater than approximately 100 pF can degrade phase margin and induce ringing or oscillations. At higher gains, especially non-inverting configurations, adding a small series resistor (typically 10–100 Ω) at the output helps isolate the capacitor and restore stability. This precaution becomes critical in feedback paths with long PCB traces or distributed parasitics common in modular designs.
How does the TS941ID handle common-mode input range near supply rails, and what implications does this have when interfacing with unipolar ADC reference stages?
The TS941ID supports rail-to-rail input, allowing full common-mode acceptance down to the negative supply rail (e.g., GND when powered from 2.5 V). This facilitates interfacing directly with single-supply ADCs without level shifting. However, input protection diodes activate near the rails, so input signals exceeding V+ or below V– by more than ~0.3 V may draw excessive current if no series resistance is present. For unipolar sensor outputs referenced to ground, proper biasing and clamping ensure safe operation within specified limits.
What operating temperature range must be considered during environmental qualification testing for systems deploying the TS941ID in industrial settings?
The TS941ID operates reliably from -40°C to +85°C, covering most commercial and industrial environments. Below -40°C, junction temperature may drop below minimum guarantees, affecting bias current matching and offset stability. Above 85°C, thermal derating applies—especially concerning output drive capability (5 mA per channel)—as internal transistor performance degrades. Long-term reliability under thermal cycling also demands attention to package stress, particularly in harsh mechanical environments.
When selecting the TS941ID over other STMicroelectronics op amps like the TS911, what key differentiating factors should guide the decision based on application constraints?
Unlike the TS911, which targets audio applications with higher slew rates (~0.1 V/µs), the TS941ID prioritizes ultra-low power and rail-to-rail inputs at the expense of speed. The TS941ID’s 10-kHz gain bandwidth and 0.0045-V/µs slew rate make it ideal for slow-moving signals such as temperature monitoring or battery voltage sensing. If higher bandwidth or faster settling is needed without sacrificing low quiescent current significantly, alternative families like TSV series may offer better trade-offs, but the TS941ID remains optimal for minimal-power, single-supply DC applications.
How should layout practices differ when placing the TS941ID in high-impedance feedback networks to avoid parasitic capacitance-induced instability?
In high-impedance topologies (e.g., transimpedance or integrator circuits), the TS941ID’s high input bias current (1 pA) minimizes leakage concerns, but stray capacitance across the feedback path can create pole-zero interactions that destabilize the loop. Minimize trace length between feedback resistor and input pins, use guard rings around sensitive nodes, and avoid routing feedback lines adjacent to noisy digital traces. Additionally, keep the feedback resistor physically close to the IC to reduce lead inductance and parasitic capacitance, preserving phase margin up to the 10-kHz GBW limit.
Is the TS941ID suitable for use in medical wearable devices requiring biopotential measurements, and what additional precautions are essential?
While the TS941ID’s low power and rail-to-rail inputs align with wearable constraints, its 10-mV input offset and lack of specialized features like electrostatic discharge (ESD) protection beyond standard levels make it unsuitable for direct patient-contact biopotential acquisition. Such applications demand isolation, higher CMRR (>80 dB), and robust ESD handling. The TS941ID may serve in non-contact signal conditioning stages post-isolation, but not in primary signal pickup paths due to insufficient noise immunity and safety margins required by IEC 60601 standards.
What is the significance of the Moisture Sensitivity Level (MSL) rating of 1 for the TS941ID in mass production assembly processes?
An MSL rating of 1 indicates the TS941ID is not sensitive to moisture absorption and can withstand unlimited exposure time before soldering without baking—critical for efficient high-volume manufacturing. This simplifies handling in cleanroom environments and reduces pre-bake requirements during reflow profiling, lowering production costs and cycle times. It also implies consistent solder joint reliability across varying storage conditions, assuming standard JEDEC-compliant packaging integrity.
How does the TS941ID’s output stage capability compare to dedicated buffer amplifiers when driving resistive loads under varying supply voltages?
With a maximum output current of 5 mA per channel, the TS941ID can drive moderate resistive loads (e.g., 1 kΩ) without external buffering. However, under low supply voltages (e.g., 2.5 V), headroom decreases, reducing output swing and forcing the op amp into current-limiting earlier. Compared to dedicated buffers like the TS951, which offer higher drive strength (often >20 mA), the TS941ID trades output robustness for integration simplicity. For loads above 500 Ω or dynamic currents exceeding 3 mA, external buffering may still be advisable to maintain linearity and prevent slew-rate distortion.
What role does the base product number TS941 play in firmware or configuration management across multiple derivative variants?
The base product number TS941 groups all pin-compatible and functionally similar derivatives (e.g., TS941ID, TS941IP), enabling centralized inventory tracking and BOM abstraction in ERP systems. During procurement or failure analysis, referencing the base number allows engineers to identify all available packaging options (SOIC, TSSOP) and temperature grades without revising schematics. However, firmware or calibration algorithms must account for subtle parametric differences—such as offset voltage variation between batches—so relying solely on the base number without validating specific part numbers against actual test data introduces risk.
In what scenarios would the TS941ID’s narrow gain bandwidth product necessitate reconsideration of the entire signal chain architecture?
With only 10 kHz of gain bandwidth, the TS941ID cannot support frequency-selective amplification above this limit. In audio or communication systems requiring filtering beyond a few hundred hertz, using it after active filters would waste bandwidth; instead, faster op amps should precede filtering stages. Similarly, in pulse-width modulation detection or edge-sensitive timing circuits, propagation delay limitations (~100 µs at unity gain) may cause missed transitions. Re-architecting the system to operate entirely within the 10-kHz domain—or cascading with passive RC filters—is often necessary to leverage this device effectively.
How does RoHS3 compliance and REACH unaffected status influence global market entry strategies for products incorporating the TS941ID?
RoHS3 compliance ensures the TS941ID meets stricter hazardous substance restrictions, including PFAS exemptions and updated cadmium limits, facilitating market access in the EU and China. REACH unaffected status means the component contains no SVHCs (Substances of Very High Concern) above 0.1% w/w, simplifying supply chain disclosures and reducing legal liability. These certifications eliminate the need for separate conflict mineral audits or supplier questionnaires for basic compliance, accelerating time-to-market in regulated industries like automotive or aerospace.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics TS941ID

Product Attribute TS941BID TS941BIDT TS941AID TS941AIDT
Part Number TS941BID TS941BIDT TS941AID TS941AIDT
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Slew Rate - - - -
Current - Supply - - - -
Voltage - Supply Span (Max) - - - -
Voltage - Input Offset - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Number of Circuits - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Current - Output / Channel - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Supply Span (Min) - - - -
Gain Bandwidth Product - - - -
Current - Input Bias - - - -
Amplifier Type - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Mounting Type - Surface Mount Through Hole Surface Mount
Output Type - Current - Unbuffered Voltage - Buffered -

TS941ID Datasheet PDF

Download TS941ID pdf datasheets and STMicroelectronics documentation for TS941ID - STMicroelectronics.

Datasheets
TS941x(A,B).pdf

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Customer Reviews

Evaluation: 10 Articles

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2025

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2025

    Good comunication,
    Transpnt regarding the process and price.

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DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
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1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
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TS941ID Image

TS941ID

STMicroelectronics
32D-TS941ID

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