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STMicroelectronics TS822AILT
- Part No.:
- TS822AILT
- Manufacturer:
- STMicroelectronics
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TS822AILT.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:11,870
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Product details
Overview
TS822AILT from STMicroelectronics is a 1% precision, 2.5V micropower shunt voltage reference in SOT23-3L package, operating from -40°C to +85°C with 40µA typical supply current and 100ppm/°C max temperature coefficient. It delivers stable reference voltage for low-power analog sensing and regulation circuits in battery-operated instrumentation and SMPS feedback loops.
For engineers reviewing the TS822AILT datasheet, TS822AILT pinout, TS822AILT application, or TS822AILT equivalent, key selection criteria include initial accuracy (±1%), ultra-low operating current (40µA typ.), capacitive load stability, long-term drift (120ppm over 1000hrs), and SOT23-3L footprint compatibility in space-constrained designs.
Technical Context
The TS822AILT functions as a two-terminal shunt reference, sinking cathode current (Ik) between 50µA and 15mA to maintain 2.475V–2.525V output at 25°C. Its reverse static impedance remains below 0.7Ω across full operating current and temperature range, enabling stable regulation even with dynamic load transients.
It exhibits low wideband noise (35nV/√Hz, 10Hz–10kHz) and high thermal stability, with average temperature coefficient limited to 100ppm/°C over -40°C to +85°C. The device maintains performance with capacitive loads up to 100µF and shows no oscillation or instability under tested conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal; ±1% tolerance at 25°C ensures tight feedback loop accuracy in precision ADC references. |
| Operating Current | 40µA typical; enables operation from microamp-level bias sources in energy-harvesting or coin-cell systems. |
| Temp Coefficient | ≤100ppm/°C; limits voltage drift to ±0.85mV over full industrial range, critical for sensor signal conditioning. |
| Reverse Static Impedance | 0.2–0.7Ω; provides low dynamic impedance for fast transient response in closed-loop regulator applications. |
| Long-Term Stability | 120ppm over 1000hrs; supports reliable calibration retention in test equipment and portable meters. |
| Wideband Noise | 35nV/√Hz (10Hz–10kHz); minimizes added noise in high-resolution data acquisition front-ends. |
Pinout & Package
SOT23-3L plastic micropackage (3.04mm × 2.64mm × 1.02mm), lead-free, ECOPACK® compliant, designed for surface-mount reflow assembly with 260°C peak solder temperature rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Connected to system GND; establishes common return path for cathode current sink. |
| Cathode (Pin 2) | Output voltage terminal | Provides regulated 2.5V output; sinks current from external resistor or load to maintain voltage. |
| No Connect (Pin 3) | Unused internal terminal | Internally unconnected; left floating per datasheet - no external connection required or recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40µA typical operation enables >10-year battery life in always-on monitoring nodes. |
| Capacitive load immunity | Stable with 0–100µF output capacitance, eliminating need for series resistance in SMPS feedback networks. |
| Low dynamic impedance | Sub-1Ω reverse static impedance ensures <1mV load regulation error across 50µA–15mA current range. |
| High ESD robustness | 2kV HBM rating allows safe handling during manual PCB assembly without special precautions. |
Applications
| Battery-Powered Multimeters | Isolated DC-DC Converter Feedback |
|---|---|
Use Scenario: Portable handheld multimeter requiring stable 2.5V reference for 16-bit ADC conversion across varying battery voltage and ambient temperature. IC Role / Device Role / Timing Role: Shunt voltage reference providing precision scaling voltage for analog front-end gain and offset calibration. Use Value: ±1% initial accuracy and 100ppm/°C TC ensure measurement repeatability within 0.05% full-scale error over -10°C to +50°C operating range. | Use Scenario: Secondary-side feedback in isolated flyback converter powering IoT sensor node, where primary-side regulation is impractical. IC Role / Device Role / Timing Role: Cathode-referenced shunt reference generating precise 2.5V threshold for optocoupler-driven error amplifier. Use Value: 40µA operating current minimizes auxiliary winding loading, improving light-load efficiency by ≥0.8% compared to 100µA alternatives. |
| Portable Gas Detector Signal Chain | Industrial Data Logger Analog Input |
Use Scenario: Electrochemical gas sensor interface with low-power microcontroller, requiring stable reference for transimpedance amplifier and ADC. IC Role / Device Role / Timing Role: Low-noise (35nV/√Hz), low-drift reference establishing baseline for ppm-level gas concentration calculation. Use Value: 120ppm long-term drift over 1000hrs ensures recalibration intervals exceed 12 months in field-deployed units. | Use Scenario: 12-channel industrial data logger sampling thermocouples and RTDs, powered from 24V rail with local LDOs. IC Role / Device Role / Timing Role: Local reference for SAR ADCs on each channel, decoupled from shared power rail noise. Use Value: Sub-1Ω dynamic impedance rejects switching noise from adjacent DC-DC converters, maintaining ENOB ≥11.2 bits at 100ksps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | 2.5V adjustable shunt reference; ±0.5% initial accuracy; 80µA typical IQ; requires external resistors for fixed 2.5V setup. | Higher accuracy but larger solution size due to resistor network; less suitable for ultra-small footprints. | Select when tighter initial tolerance (±0.5%) outweighs board area and BOM count constraints. |
| REF3025AIDBZR | 2.5V series reference; ±0.2% initial accuracy; 50µA IQ; requires minimum load current; higher output impedance than shunt type. | Not a drop-in replacement-requires redesign of bias network and cannot sink current like TS822AILT. | Choose only if system architecture mandates series topology and can accommodate 100Ω+ output impedance. |
Compared with TLVH431ACDBVR and REF3025AIDBZR, the TS822AILT offers smallest PCB footprint, lowest IQ, and true two-terminal simplicity-ideal for retrofitting into existing shunt-based designs without layout changes or additional passives.
Availability
TS822AILT is available at Aetrix Electronics and suitable for battery chargers, portable instrumentation, switch-mode power supplies, and battery-operated equipment requiring stable component supply with guaranteed long-term sourcing.
Supply support for TS822AILT 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, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS822 series belongs to ST's precision analog portfolio, engineered specifically for low-power, high-stability voltage reference applications in space- and energy-constrained systems.
FAQ
What is the minimum cathode current required for TS822AILT to regulate at 2.5V?
The TS822AILT requires a minimum cathode current (Ik-min) of 50µA at 25°C and 60µA across the full -40°C to +85°C range to maintain regulation within specification. Below this threshold, output voltage drops nonlinearly and falls outside the ±1% tolerance band.
Can TS822AILT drive a 100nF capacitor directly without oscillation?
Yes - the TS822AILT is explicitly characterized for stability with capacitive loads from 0 to 100µF, including 100nF. Datasheet Figure 6 confirms no peaking or ringing in pulse response tests with CL = 100nF, making it suitable for direct buffering in noisy SMPS environments.
How does the TS822AILT differ from the standard TS822ILT version?
The TS822AILT offers ±1% initial accuracy and tighter temperature coefficient bounds versus the TS822ILT's ±2% tolerance. Both share identical pinout, package, operating current range, and thermal specifications - the A-grade variant is selected for higher-precision applications where reference drift must be minimized.
Is the SOT23-3L package RoHS and REACH compliant?
Yes - the TS822AILT uses STMicroelectronics' ECOPACK®-compliant SOT23-3L package, featuring lead-free second-level interconnects and full compliance with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, verified per JEDEC JESD97 marking standards.
TS822AILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 60 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TS822AILT FAQ
1.How can I place an order for TS822AILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS822AILT 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 TS822AILT reliable?
The price and inventory of TS822AILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS822AILT is usually 5 days.
3.What payment methods are accepted for TS822AILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS822AILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS822AILT?
TS822AILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS822AILT 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 TS822AILT?
For technical support, including TS822AILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS822AILT requirements.
6.How does Aetrix verify that TS822AILT is sourced from the original manufacturer or authorized distributors?
All TS822AILT 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 TS822AILT meets industry standards.
7.What is the process for return or replacement of TS822AILT?
All TS822AILT units undergo pre-shipment inspection (PSI). If there is an issue with TS822AILT, 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 TS822AILT part is unused and in its original packaging.
Return procedure for TS822AILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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