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STMicroelectronics TSX561AILT
- Part No.:
- TSX561AILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSX561AILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,598
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Product details
Overview
TSX561AILT from STMicroelectronics is a single-channel, micropower, rail-to-rail input CMOS operational amplifier optimized for high-impedance sensor interfaces and automotive signal conditioning. It delivers 900 kHz gain bandwidth product at 235 µA supply current (5 V), 600 µV max input offset voltage (A-grade), 1 pA typical input bias current, and operates across –40 °C to +125 °C - enabling precision analog front-ends in battery-powered industrial sensors and engine control modules.
For engineers reviewing the TSX561AILT datasheet, TSX561AILT pinout, TSX561AILT application, or TSX561AILT equivalent, key selection criteria include its A-grade offset voltage stability over temperature, ESD-hardened 4 kV HBM rating, SOT23-5 footprint compatibility with legacy op-amps, and verified rail-to-rail input operation up to (VCC+) + 0.1 V - critical for low-voltage sensor biasing and automotive diagnostics circuits.
Technical Context
The TSX561AILT employs complementary PMOS/NMOS input differential pairs to achieve rail-to-rail input common-mode range from (VCC–) – 0.1 V to (VCC+) + 0.1 V, with performance optimized for the PMOS pair region (up to VCC – 1.5 V). Its 16 V CMOS process enables stable DC accuracy and AC performance across 3 V to 16 V supply rails.
It features internal compensation for unity-gain stability, 55° phase margin into 100 pF capacitive loads, and low 15 µVpp 0.1–10 Hz input noise - making it suitable for DC-coupled sensor amplification where long-term offset drift (2–12 µV/°C) and low-frequency noise dominate system error budgets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - supports direct interface with 3.3 V microcontrollers and 12 V automotive systems without level-shifting. |
| Gain Bandwidth Product | 900 kHz typ. at 16 V - enables stable closed-loop gain ≥10 at 90 kHz for anti-aliasing filters and active sensor conditioning. |
| Input Offset Voltage (A-grade) | 600 µV max at 25 °C - ensures ≤0.6 mV initial error in 10-bit ADC front-ends with 3.3 V full-scale range. |
| Input Bias Current | 1 pA typ. - preserves signal integrity when amplifying outputs from >1 GΩ piezoresistive or pH sensors. |
| Common-Mode Input Range | (VCC–) – 0.1 V to (VCC+) + 0.1 V - allows direct sensing of signals referenced to ground or VCC in single-supply configurations. |
| ESD Rating (HBM) | 4 kV - meets IEC 61000-4-2 Level 3 for robustness in automotive module assembly and field service environments. |
| Operating Temperature | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood engine control and transmission monitoring applications. |
Pinout & Package
SOT23-5 package: ultra-compact 2.9 mm × 1.6 mm × 1.1 mm surface-mount outline with exposed pad for thermal enhancement; RoHS-compliant, ECOPACK®2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting Input | High-impedance node accepting feedback network; rail-to-rail capable with <1 pA bias current. |
| 2 (IN+) | Non-inverting Input | High-impedance node for sensor reference or signal source; supports common-mode voltages beyond VCC. |
| 3 (V–) | Negative Supply | Ground or negative rail connection; must be decoupled with 10 nF capacitor within 2 mm for stability. |
| 4 (OUT) | Output | Capable of sourcing/sinking ≥9 mA at 5 V; drives 10 kΩ loads with <100 mV saturation voltage. |
| 5 (V+) | Positive Supply | Primary power input; accepts 3–16 V; requires local 10 nF decoupling to suppress supply-induced noise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables direct amplification of signals near supply rails - e.g., thermistor dividers biased at VCC/2 without external level-shifting. |
| A-grade input offset voltage | 600 µV max at 25 °C reduces calibration overhead in factory-trimmed sensor modules for Tier-1 automotive suppliers. |
| 16 V CMOS process | Delivers 900 kHz GBP with only 235 µA supply current - achieves 3.8 kHz/µA efficiency, outperforming legacy 5 V op-amps in wide-supply designs. |
| Automotive qualification | AEC-Q100 Grade 1 compliance ensures reliability in engine control units, battery management systems, and ADAS sensor nodes. |
| Low 0.1–10 Hz noise | 15 µVpp integrated noise enables sub-10 µV resolution in slow-sampling medical electrode amplifiers and strain gauge bridges. |
Applications
| Engine Coolant Temperature Sensing | Automotive Cabin Air Quality Monitor |
|---|---|
|
Use Scenario: Amplifies output of NTC thermistor in 12 V engine bay environment with ambient swings from –40 °C to +125 °C. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage for analog-to-digital conversion in ECU subsystems. Use Value: A-grade 600 µV offset and 2 µV/°C drift minimize temperature measurement error to ±0.5 °C over full range without software compensation. |
Use Scenario: Conditions weak current output from electrochemical CO₂ sensor powered from vehicle's 5 V bus. IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA-level sensor current to measurable voltage for HVAC controller ADC. Use Value: 1 pA input bias current prevents loading of high-impedance sensor electrodes, preserving linearity and response time. |
| Industrial Pressure Transducer Interface | Portable Medical Pulse Oximeter Front-End |
|
Use Scenario: Amplifies mV-level bridge output from MEMS pressure sensor in factory automation PLC I/O module. IC Role / Device Role / Timing Role: Low-noise instrumentation amplifier stage preceding 24-bit sigma-delta ADC. Use Value: 15 µVpp 0.1–10 Hz noise ensures ≥18-bit effective resolution in static pressure measurements. |
Use Scenario: Amplifies photodiode current from red/IR LEDs in battery-powered wearable oximeter. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier operating from 3.3 V coin cell supply. Use Value: 235 µA quiescent current extends battery life to >72 hours while maintaining 900 kHz bandwidth for pulse detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower, rail-to-rail input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSX561IST | Same die, but in MiniSO8 package - larger footprint, higher thermal resistance (190 °C/W vs. 250 °C/W), no exposed pad. | Preferred for prototyping on breadboards or PCBs with space for SO8; less suitable for thermally constrained automotive modules. | Select TSX561IST only if SOT23-5 assembly capability is unavailable or board layout requires SO8 pitch compatibility. |
| MCP6001T-I/LT | Lower GBP (1 MHz), higher offset (1.5 mV max), wider supply range (1.8–6 V), but lacks AEC-Q100 qualification and 16 V tolerance. | Valid for consumer-grade portable devices; not acceptable for automotive or industrial 12 V systems requiring extended voltage headroom. | Choose MCP6001T-I/LT only for cost-sensitive 3.3 V IoT endpoints where AEC-Q100 and 16 V operation are unnecessary. |
Compared with TSX561IST and MCP6001T-I/LT, the TSX561AILT uniquely combines AEC-Q100 Grade 1 qualification, 16 V operation, A-grade offset, and SOT23-5 thermal performance - making it the only option for space-constrained, high-reliability automotive sensor nodes requiring both precision and ruggedness.
Availability
TSX561AILT is available at Aetrix Electronics and suitable for automotive engine control units, industrial pressure transducers, and portable medical diagnostic devices requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSX561AILT 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 automotive, industrial, and consumer markets.
The TSX56x series was developed specifically for high-accuracy, low-power signal conditioning in harsh-environment applications - emphasizing rail-to-rail input, automotive qualification, and micropower efficiency without sacrificing bandwidth.
FAQ
What is the maximum capacitive load the TSX561AILT can drive while maintaining stability?
The TSX561AILT maintains ≥55° phase margin with up to 100 pF capacitive load at 12 V supply, as confirmed by Figure 13 in the datasheet. For loads exceeding 100 pF, a series resistor (≥100 Ω) between output and capacitance is required to prevent peaking or oscillation - especially critical in filter stages driving ADC input capacitance.
Does the TSX561AILT support true rail-to-rail output swing?
No - the TSX561AILT features rail-to-rail *input* only. Its output swing is limited to within 70 mV of each rail (VOH/VOL = 70 mV max at 25 °C), as specified in Tables 4–6. This 140 mV total dead band must be accounted for in single-supply designs requiring full-scale ADC utilization.
How does the input offset voltage drift behave above 85 °C?
Over –40 °C to +125 °C, the TSX561AILT's offset drift is guaranteed ≤12 µV/°C (max), with typical behavior near 2 µV/°C. At 125 °C, total drift from 25 °C is capped at 1800 µV - verified by production testing per Table 4, ensuring predictable error growth in under-hood automotive applications.
Can the TSX561AILT operate from a 2.5 V supply?
No - the absolute minimum supply voltage is 3 V per Table 3. Operation below 3 V risks undefined behavior, including degraded CMRR, reduced output drive, and potential loss of rail-to-rail input functionality. For 2.5 V systems, consider ST's TSX631ILT (45 µA, 200 kHz) instead.
TSX561AILT 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:
- -
- Slew Rate:
- 1.1V/µs
- Gain Bandwidth Product:
- 900 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- 250µA
- Current - Output / Channel:
- 92 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TSX561AILT FAQ
1.How can I place an order for TSX561AILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSX561AILT 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 TSX561AILT reliable?
The price and inventory of TSX561AILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSX561AILT is usually 5 days.
3.What payment methods are accepted for TSX561AILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSX561AILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSX561AILT?
TSX561AILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSX561AILT 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 TSX561AILT?
For technical support, including TSX561AILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSX561AILT requirements.
6.How does Aetrix verify that TSX561AILT is sourced from the original manufacturer or authorized distributors?
All TSX561AILT 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 TSX561AILT meets industry standards.
7.What is the process for return or replacement of TSX561AILT?
All TSX561AILT units undergo pre-shipment inspection (PSI). If there is an issue with TSX561AILT, 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 TSX561AILT part is unused and in its original packaging.
Return procedure for TSX561AILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSX561AILT Tags
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