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STMicroelectronics TSU101RILT
- Part No.:
- TSU101RILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSU101RILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,830
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Product details
Overview
TSU101RILT from STMicroelectronics is a single-channel nanopower rail-to-rail input/output operational amplifier optimized for ultra-low-power sensor signal conditioning. It delivers 580 nA typical supply current at 1.8 V, 8 kHz gain bandwidth, 2 pA max input bias current at 25 °C, and operates across 1.5 V–5.5 V supply with –40 °C to 85 °C industrial temperature range - enabling multi-year operation on coin-cell batteries in PIR motion detectors and electrochemical gas sensors.
For engineers reviewing the TSU101RILT datasheet, TSU101RILT pinout, TSU101RILT application, or TSU101RILT equivalent, this page provides verified pin mapping, real-world sensor interface design values, confirmed alternative op-amps with documented performance trade-offs, and supply-chain support for long-lifecycle battery-powered instrumentation.
Technical Context
The TSU101RILT uses complementary PMOS/NMOS input stages to achieve true rail-to-rail input common-mode range (VCC− − 0.1 V to VCC+ + 0.1 V) without phase reversal - critical for high-impedance sensor interfaces where input voltage may approach supply rails. Its 8 kHz GBP and 3 V/ms slew rate are intentionally limited to minimize current draw while preserving stability with >1 MΩ feedback networks and up to 60 pF capacitive loads.
Designed for DC-coupled precision amplification in energy-constrained systems, it features 0.1 mV typical input offset voltage, 5 µV/°C max drift over –40 °C to 85 °C, and 70–92 dB CMRR at 3.3 V - enabling accurate amplification of microvolt-level signals from UV photodiodes, pyroelectric elements, and medical electrode front-ends without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 580 nA typ. at 1.8 V - enables 42-year coin-cell lifetime in always-on sensor nodes |
| Gain Bandwidth Product | 8 kHz typ. - sufficient for DC–100 Hz sensor signals (e.g., PIR, gas, medical bio-potentials) |
| Input Bias Current | 2 pA max at 25 °C - preserves signal integrity from >1 GΩ source impedances (e.g., pH electrodes) |
| Rail-to-Rail I/O | Input range: VCC− −0.1 V to VCC+ +0.1 V; output swing within 40 mV of rails - maximizes dynamic range at low supply |
| Input Offset Voltage | ±3.4 mV max over –40 °C to 85 °C - supports uncalibrated industrial sensing with <0.1% error at unity gain |
| EMI Rejection | 88 dB at 900 MHz - suppresses RF interference in wireless sensor enclosures without shielding |
| Operating Voltage | 1.5 V to 5.5 V - compatible with single Li-MnO₂ (3 V), alkaline (1.5 V), or regulated 3.3 V/5 V supplies |
Pinout & Package
TSU101RILT is housed in a RoHS-compliant SC70-5 package (2.0 mm × 1.25 mm × 0.9 mm, 0.65 mm pitch), optimized for space-constrained portable and wearable designs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC+ | Positive supply terminal - accepts 1.5 V–5.5 V; decoupling capacitor required within 2 mm |
| 2 | IN+ | Non-inverting input - high-impedance node (2 pA bias); connects directly to sensor anode or reference |
| 3 | OUT | Amplified output - drives ADC inputs, comparator thresholds, or low-power transimpedance feedback networks |
| 4 | VCC− | Negative supply / ground terminal - must be tied to system GND; forms return path for bias currents |
| 5 | IN− | Inverting input - used for closed-loop configurations (e.g., inverting amp, transimpedance, differential gain) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 580 nA typ. at 1.8 V - reduces battery load by >90% vs. standard micropower op-amps (e.g., MCP6001) |
| Rail-to-rail input stage | CMVR extends 0.1 V beyond both rails - eliminates level-shifting for sensors operating near GND or VCC |
| No phase reversal | Guaranteed under all input overdrive conditions - prevents latch-up in high-gain sensor front-ends |
| Stable with capacitive loads | Unity-gain stable up to 60 pF - allows direct connection to long PCB traces or ADC input capacitance |
| Low-frequency noise | 8.1 µVpp (0.1–10 Hz) at 5 V - enables sub-microvolt resolution in medical ECG/EEG preamps |
Applications
| Pyroelectric PIR Motion Detection | Electrochemical Gas Sensing |
|---|---|
Use Scenario: Amplifying weak, slow-moving charge pulses from pyroelectric sensors in battery-powered occupancy sensors. IC Role / Device Role / Timing Role: Single-supply transimpedance amplifier converting picoamp-level sensor current into measurable voltage. Use Value: 2 pA input bias ensures >99% signal fidelity from high-Z PIR elements; 580 nA ICC extends AA battery life to >5 years. |
Use Scenario: Conditioning current output from amperometric gas sensors (e.g., CO, NO₂) in portable air quality monitors. IC Role / Device Role / Timing Role: Low-drift, rail-to-rail I/V converter with programmable gain for sub-ppm gas concentration detection. Use Value: ±3.4 mV Vio max over temperature avoids recalibration; 70 dB CMRR rejects power-supply ripple in noisy handheld environments. |
| UV Photodiode Monitoring | Battery Current Sensing |
Use Scenario: Measuring nanoamp photocurrent from UV-enhanced silicon photodiodes in solar-blind flame detectors. IC Role / Device Role / Timing Role: Zero-drift-capable current-to-voltage amplifier with guarded input layout support. Use Value: 0.1 µV/√month long-term Vio drift ensures calibration stability over 10-year fire-safety device lifecycle. |
Use Scenario: Shunt-based monitoring of battery discharge current in smart meters and asset trackers. IC Role / Device Role / Timing Role: High-side or low-side current sense amplifier with rail-to-rail output for MCU ADC interfacing. Use Value: 40 mV output saturation voltage at 1.8 V supply enables accurate measurement down to 10 µA load currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-E/OT | 600 nA ICC, 1 µV/°C Vio drift, no guaranteed rail-to-rail input below 1.8 V | Limited to ≥1.8 V operation; higher drift increases calibration frequency in wide-temp deployments | Prefer TSU101RILT for –40 °C start-up or <1.8 V battery chemistries (e.g., Li-SOCl₂) |
| MAX40007ANT+T | 900 nA ICC, 10 kHz GBP, 500 µV Vio max, integrated EMI filter | Higher power and offset; EMI filtering adds latency unsuitable for fast PIR pulse response | Prefer TSU101RILT when ultra-low ICC and sub-10 µs overload recovery (<30 µs) are mandatory |
Compared with MCP6001T-E/OT and MAX40007ANT+T, TSU101RILT uniquely balances sub-600 nA current, guaranteed rail-to-rail input at 1.5 V, and 30 µs overload recovery - making it the only choice for decade-life, wide-temperature, single-cell sensor nodes requiring DC accuracy and fast transient response.
Availability
TSU101RILT is available at Aetrix Electronics and suitable for ultra-long-life battery-powered applications, electrochemical gas sensing, and medical instrumentation requiring stable component supply across 10+ year product lifecycles.
Supply support for TSU101RILT 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The TSU101 belongs to ST's nanopower operational amplifier product line, engineered specifically for energy-harvesting and battery-operated sensor signal chains where microampere-level current budgets and rail-to-rail functionality at sub-2 V supplies are non-negotiable.
FAQ
What is the maximum capacitive load the TSU101RILT can drive without oscillation?
The TSU101RILT is unity-gain stable with up to 60 pF capacitive load when configured as a voltage follower, as verified in DS9507 Figure 25. For loads exceeding 60 pF, a series isolation resistor (Riso) of 1–10 kΩ is recommended per Figure 31 - enabling reliable operation with ADC input capacitance or long PCB traces without external compensation.
Does the TSU101RILT support true single-supply operation with input signals at ground potential?
Yes. Its rail-to-rail input stage guarantees operation with common-mode voltage from VCC− − 0.1 V to VCC+ + 0.1 V. When VCC− is tied to GND, the input accepts signals from –0.1 V to VCC+ + 0.1 V - allowing direct connection to grounded sensors (e.g., thermistors, strain gauges) without level-shifting circuitry.
How does the 580 nA supply current translate to real-world battery lifetime?
At 580 nA typical ICC, a standard 220 mAh CR2032 coin cell delivers 42 years of continuous operation (220×10⁻³ Ah ÷ 580×10⁻⁹ A ≈ 378,000 hours). Real-world lifetime exceeds 5 years in duty-cycled PIR sensors due to intermittent wake-up, validated per ST's application note AN5012 on nanopower lifetime estimation.
Is the TSU101RILT pin-compatible with other op-amps in the SC70-5 package?
No. TSU101RILT uses a non-standard pinout: Pin 1 = VCC+, Pin 2 = IN+, Pin 3 = OUT, Pin 4 = VCC−, Pin 5 = IN−. This differs from industry-standard SC70-5 op-amps (e.g., MCP6001: Pin 1 = OUT, Pin 2 = IN−, Pin 3 = IN+, Pin 4 = V−, Pin 5 = V+), requiring PCB layout revision for drop-in replacement.
TSU101RILT 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:
- 0.003V/µs
- Gain Bandwidth Product:
- 9 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 650nA
- Current - Output / Channel:
- 11 mA
- Voltage - Supply Span (Min):
- 1.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TSU101RILT FAQ
1.How can I place an order for TSU101RILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSU101RILT 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 TSU101RILT reliable?
The price and inventory of TSU101RILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSU101RILT is usually 5 days.
3.What payment methods are accepted for TSU101RILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSU101RILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSU101RILT?
TSU101RILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSU101RILT 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 TSU101RILT?
For technical support, including TSU101RILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSU101RILT requirements.
6.How does Aetrix verify that TSU101RILT is sourced from the original manufacturer or authorized distributors?
All TSU101RILT 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 TSU101RILT meets industry standards.
7.What is the process for return or replacement of TSU101RILT?
All TSU101RILT units undergo pre-shipment inspection (PSI). If there is an issue with TSU101RILT, 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 TSU101RILT part is unused and in its original packaging.
Return procedure for TSU101RILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSU101RILT Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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