My Inquiry
My Account
STMicroelectronics TS931BILT
- Part No.:
- TS931BILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TS931BILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:10,482
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TS931BILT from STMicroelectronics is a single-channel rail-to-rail output micropower operational amplifier in SOT23-5 package, designed for ultra-low-power sensor signal conditioning and battery-powered instrumentation. It delivers 2 mV max input offset voltage, 20 μA supply current at 3 V, and rail-to-rail output swing (2.95 V at VCC = 3 V, RL = 100 kΩ), enabling precision analog front-ends in space-constrained portable systems.
For engineers reviewing the TS931BILT datasheet, TS931BILT pinout, TS931BILT application, or TS931BILT equivalent, key selection criteria include its 1 pA input bias current, -40 °C to +105 °C automotive-grade operating range, CMOS input stage, and compatibility with single-supply 2.7–10 V operation in low-noise, low-drift sensing nodes.
Technical Context
The TS931BILT employs a CMOS input stage with ultra-low input bias current (1 pA typ.) and rail-to-rail output stage using complementary bipolar output transistors, enabling full dynamic range utilization near supply rails. Its 100 kHz gain-bandwidth product and 50 V/ms slew rate support stable DC-coupled amplification and low-frequency AC signal conditioning without phase reversal.
It features internal ESD protection (2 kV HBM), latch-up immunity (Class A), and operates across 2.7–10 V single supply with common-mode input range extending to VCC– – 0.2 V and up to VCC+ – 1.5 V - making it suitable for direct interfacing with resistive sensors and pH electrodes without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 10 V single supply - enables direct use with Li-ion, coin-cell, or 5 V rail without regulators |
| Input Offset Voltage | 2 mV max (TS931B grade) - ensures ≤0.2% error in 1 V full-scale sensor outputs without trimming |
| Supply Current | 20 μA typ. at 3 V - supports >10-year battery life in 10 μA average-current smoke detectors |
| Input Bias Current | 1 pA typ. - prevents significant voltage drop across high-impedance pH electrode or photodiode sources |
| Output Swing | Rail-to-rail (2.95 V at 3 V supply, RL = 100 kΩ) - maximizes ADC dynamic range in 3 V microcontroller systems |
| Gain-Bandwidth Product | 100 kHz - sufficient for DC–10 kHz sensor signals (e.g., strain gauges, thermopiles) with ≥60 dB closed-loop gain |
| Common-Mode Range | VCC– – 0.2 V to VCC+ – 1.5 V - accommodates ground-referenced sensors and single-ended transducer interfaces |
Pinout & Package
SOT23-5 package (2.9 mm × 2.8 mm × 1.3 mm), RoHS-compliant, ECOPACK® certified, optimized for high-density PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC–) | Negative supply / ground reference | Return path for all internal bias currents; must be low-impedance to minimize noise coupling |
| 2 (In–) | Inverting input | High-impedance CMOS node; requires guard ring layout for <1 pA leakage in pH meter designs |
| 3 (In+) | Non-inverting input | Same ultra-low bias as In–; used for reference voltage buffering or sensor excitation feedback |
| 4 (Out) | Amplifier output | Capable of sourcing/sinking 1.5 mA; drives 100 kΩ loads to within 10 mV of rails at 3 V |
| 5 (VCC+) | Positive supply | Accepts 2.7–10 V; internal regulation ensures stable quiescent current across supply variation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers usable output swing within 10 mV of both supply rails at 3 V, preserving full ADC resolution |
| Micropower operation | 20 μA supply current enables integration into always-on battery nodes with sub-μW sleep modes |
| Ultra-low input bias current | 1 pA typical eliminates loading errors on MΩ-range sensor elements (e.g., glass pH electrodes) |
| Automotive-grade temperature range | -40 °C to +105 °C operation qualified per AEC-Q100 - suitable for under-hood sensor modules |
| ESD and latch-up robustness | 2 kV HBM ESD rating and Class A latch-up immunity ensure reliability in handling and field deployment |
Applications
| Portable Smoke Detector | pH Meter Front-End |
|---|---|
|
Use Scenario: Continuous monitoring of ionization chamber current in battery-powered residential smoke alarms. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier converting pA-level chamber current to measurable voltage. Use Value: 1 pA input bias avoids signal loss across GΩ feedback resistor; 20 μA ICC extends 9 V battery life beyond 10 years. |
Use Scenario: Signal conditioning for glass electrode in handheld or benchtop pH meters. IC Role / Device Role / Timing Role: High-input-impedance buffer and gain stage for mV-level electrode potential. Use Value: Rail-to-rail output preserves full 0–14 pH range mapping to 0–3.3 V ADC input; 2 mV Vio limits calibration drift to <0.1 pH unit. |
| Digital Scale Load Cell Interface | Automotive Cabin Temperature Sensor |
|
Use Scenario: Amplifying microvolt-level Wheatstone bridge output from strain-gauge load cells. IC Role / Device Role / Timing Role: Precision instrumentation amplifier input stage (with external resistors) for 24-bit sigma-delta ADC. Use Value: 2 mV max Vio and 3 μV/°C drift minimize zero-point error over 0–40 °C operating range; SO-8 variant available for higher drive capability. |
Use Scenario: Signal conditioning for NTC thermistor in HVAC control modules. IC Role / Device Role / Timing Role: Low-power voltage follower and filter driver in 12 V automotive subsystems. Use Value: -40 °C to +105 °C guaranteed operation meets AEC-Q100 Grade 2; 2.7 V min supply allows direct connection to switched 3.3 V rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-E/OT (Microchip) | Higher 100 μA supply current; 4.5 mV Vio max; same SOT23-5 package | Lacks automotive qualification; not rated for -40 °C to +105 °C continuous operation | Prefer TS931BILT where extended temperature stability and lower power are critical |
| LMV321IDBVR (TI) | 38 μA ICC; 7 mV Vio max; rail-to-rail input/output; wider 2.7–5.5 V range | Lower ESD rating (1.5 kV HBM); no AEC-Q100 qualification; higher input bias (10 pA) | Choose TS931BILT for pH sensing or long-life battery systems requiring <2 mV offset and 1 pA Iib |
Compared with MCP6001T-E/OT and LMV321IDBVR, the TS931BILT provides superior offset accuracy, lower power, and automotive-grade reliability - essential for precision, long-duration, and harsh-environment analog sensing where signal integrity and lifetime stability are non-negotiable.
Availability
TS931BILT is available at Aetrix Electronics and suitable for battery-powered systems, portable communication systems, and automotive cabin sensor modules requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TS931BILT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering intelligent power, analog, MEMS, and microcontroller solutions for industrial, automotive, and consumer markets.
The TS93x series belongs to ST's precision analog portfolio, engineered specifically for ultra-low-power, high-impedance sensor interface applications where rail-to-rail output, micropower consumption, and automotive-grade reliability are mandatory.
FAQ
What is the maximum capacitive load the TS931BILT can drive while maintaining stability?
The TS931BILT is characterized for stability with up to 50 pF capacitive load when driving 100 kΩ resistive loads, as confirmed in Figure 13 (gain/phase vs. frequency). Driving >50 pF requires external isolation resistor (≥100 Ω) between output and capacitor to prevent peaking or oscillation - a design requirement verified across the full -40 °C to +105 °C range.
Does the TS931BILT support dual-supply operation?
No - the TS931BILT is specified only for single-supply operation from 2.7 V to 10 V. Its input common-mode range extends to VCC– – 0.2 V, allowing ground-referenced inputs, but it lacks symmetric rail capability or negative supply pin. For dual-supply applications, ST recommends the TSZ121 or TS912 families.
Is the SOT23-5 package of TS931BILT lead-free and RoHS compliant?
Yes - the TS931BILT uses an ECOPACK®-compliant SOT23-5 package with lead-free terminations and halogen-free molding compound, meeting RoHS Directive 2011/65/EU and REACH SVHC requirements. Full material declarations and test reports are available via ST's official product page under "Quality & Reliability."
How does the TS931BILT's input offset voltage drift compare across temperature?
The TS931BILT exhibits a guaranteed input offset voltage drift of 3 μV/°C maximum over -40 °C to +105 °C, as specified in Table 4 and Table 5. This results in ≤0.5 mV total drift across the full range - critical for pH meters and digital scales where calibration must remain valid for months without recalibration.
TS931BILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 100 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 20µA
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TS931BILT FAQ
1.How can I place an order for TS931BILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS931BILT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TS931BILT reliable?
The price and inventory of TS931BILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS931BILT is usually 5 days.
3.What payment methods are accepted for TS931BILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS931BILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS931BILT?
TS931BILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS931BILT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TS931BILT?
For technical support, including TS931BILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS931BILT requirements.
6.How does Aetrix verify that TS931BILT is sourced from the original manufacturer or authorized distributors?
All TS931BILT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TS931BILT meets industry standards.
7.What is the process for return or replacement of TS931BILT?
All TS931BILT units undergo pre-shipment inspection (PSI). If there is an issue with TS931BILT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TS931BILT part is unused and in its original packaging.
Return procedure for TS931BILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS931BILT Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
