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STMicroelectronics TS822ILT
- Part No.:
- TS822ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TS822ILT.pdf
- Description:
- IC VREF SHUNT 2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:153
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Product details
Overview
TS822ILT from STMicroelectronics is a 2.5V micropower shunt voltage reference in SOT23-3 package, delivering ±2% initial accuracy at 25°C, 100ppm/°C max temperature coefficient, and ultra-low 40µA typical operating current. It serves as a precision voltage reference for feedback loops and analog signal conditioning in space-constrained, battery-powered systems.
For engineers reviewing the TS822ILT datasheet, TS822ILT pinout, TS822ILT application, or TS822ILT equivalent, key selection criteria include cathode current range (50µA–15mA), reverse static impedance (<1.2Ω), long-term stability (120ppm over 1000hrs), and compatibility with capacitive loads up to 100µF.
Technical Context
The TS822ILT operates as a two-terminal shunt reference, requiring an external series resistor to set cathode current between 50µA and 15mA. Its performance is specified across –40°C to +85°C with guaranteed ΔVref/ΔT ≤100ppm/°C and ΔVk/ΔIk ≤10mV over full current range.
It achieves low wideband noise (35nV/√Hz, 10Hz–10kHz) and high stability with capacitive loads-verified up to 100µF-enabling direct use in SMPS feedback networks and precision ADC reference buffers without added compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.50V ±2% @ 25°C; stable reference point for feedback and calibration |
| Operating Current | 50µA min to 15mA max; supports ultra-low-power and high-accuracy biasing |
| Temp Coefficient | ≤100ppm/°C; ensures <±0.25mV drift over industrial temperature range |
| Static Impedance | 0.2–1.2Ω; minimizes load-induced voltage error in dynamic current conditions |
| Noise (10Hz–10kHz) | 35nV/√Hz; preserves SNR in precision measurement front-ends |
| Long-Term Stability | 120ppm over 1000hrs; reduces recalibration need in field-deployed instrumentation |
Pinout & Package
SOT23-3L plastic micropackage (3.04mm × 2.64mm × 1.02mm), lead-free ECOPACK® compliant, optimized for automated surface-mount assembly and thermal dissipation (RthJA = 340°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground return path | Low-impedance connection to system GND; must be routed with minimal trace inductance |
| Cathode (Pin 2) | Output voltage node | Provides stable 2.5V; connects to feedback divider or ADC reference input |
| No Connect (Pin 3) | Unused terminal | Internally unconnected; left floating per datasheet; no PCB routing required |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Load Stability | Operates stably with 0–100µF output capacitance-eliminates need for isolation resistors in SMPS designs |
| Micropower Operation | 40µA typical current enables >10-year battery life in coin-cell–powered sensors |
| Industrial Temp Range | Specified performance from –40°C to +85°C supports deployment in outdoor and factory-floor environments |
| Low Output Noise | 35nV/√Hz broadband noise maintains resolution in 16-bit+ data acquisition systems |
Applications
| Battery Charger Feedback | Portable Instrumentation |
|---|---|
Use Scenario: Regulates charging voltage in single-cell Li-ion chargers using linear or buck topology. IC Role / Device Role / Timing Role: Shunt reference providing precise 2.5V threshold for error amplifier input. Use Value: Enables ±0.5% charge voltage accuracy across temperature, improving cell longevity and safety compliance. | Use Scenario: Supplies reference voltage for handheld multimeters and portable DMMs. IC Role / Device Role / Timing Role: Stable 2.5V reference for dual-slope ADC integrator and comparator thresholds. Use Value: Maintains 4½-digit measurement accuracy without periodic recalibration in field use. |
| SMPS Voltage Sensing | Wireless Sensor Node Reference |
Use Scenario: Sets output voltage in isolated flyback or forward converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Cathode-connected to primary-side error amplifier; anode grounded. Use Value: Delivers consistent regulation despite line/load transients due to <1.2Ω dynamic impedance. | Use Scenario: Powers reference rail for ultra-low-power SAR ADC in BLE/Zigbee sensor nodes. IC Role / Device Role / Timing Role: Low-current shunt reference enabling sub-10µA total system standby current. Use Value: Extends coin-cell lifetime beyond 5 years while maintaining 0.1% measurement repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431AILP | 2.5V adjustable shunt; 100µA min cathode current; 90ppm/°C tempco | Requires external resistor network for fixed 2.5V; higher minimum current increases power overhead | Prefer when design already uses TLVH431 family and needs tighter tempco margin |
| LM4040C25IDBZR | 2.5V fixed shunt; ±0.5% initial accuracy; 75ppm/°C tempco; 60µA min current | Higher accuracy and lower tempco but consumes 20µA more typical current than TS822ILT | Choose when absolute accuracy outweighs micropower priority in mains-powered instrumentation |
Compared with TLVH431AILP and LM4040C25IDBZR, the TS822ILT uniquely balances ±2% tolerance, 40µA typical current, and proven stability with large capacitive loads-making it optimal for cost-sensitive, battery-operated SMPS and portable measurement where moderate accuracy suffices.
Availability
TS822ILT is available at Aetrix Electronics and suitable for battery chargers, portable instrumentation, switch-mode power supplies, and wireless sensor nodes requiring stable component supply with short lead times and volume scalability.
Supply support for TS822ILT 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS822 series belongs to ST's precision analog reference portfolio, engineered specifically for micropower, space-constrained applications demanding stable voltage references across industrial temperatures without external compensation.
FAQ
What is the minimum cathode current required for TS822ILT to regulate within specification?
The TS822ILT requires a minimum cathode current of 50µA at 25°C and 60µA across –40°C to +85°C to maintain ±2% output voltage accuracy. Below this threshold, regulation degrades rapidly-verified by Figure 2 in the datasheet showing sharp voltage drop below 50µA.
Can TS822ILT drive a 10µF ceramic capacitor directly without oscillation?
Yes. The TS822ILT is explicitly characterized for stability with capacitive loads up to 100µF-including 10µF ceramics-as confirmed in Figure 6 and the "High stability when used with capacitive loads" feature statement. No series isolation resistor is needed.
How does the TS822ILT's temperature coefficient compare to the TS822AILT variant?
Both TS822ILT (±2%) and TS822AILT (±1%) share identical 100ppm/°C maximum temperature coefficient per Tables 3 and 4. The grade difference affects only initial accuracy-not thermal drift-so both exhibit the same <±0.25mV drift over –40°C to +85°C.
Is Pin 3 of the SOT23-3 package electrically connected internally?
No. Pin 3 is designated "No Connect" in the official STMicroelectronics datasheet (Figure 13, page 7). It is internally unconnected and must remain floating on the PCB-no routing or grounding is permitted or required.
TS822ILT 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:
- ±2%
- 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
TS822ILT FAQ
1.How can I place an order for TS822ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS822ILT 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 TS822ILT reliable?
The price and inventory of TS822ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS822ILT is usually 5 days.
3.What payment methods are accepted for TS822ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS822ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS822ILT?
TS822ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS822ILT 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 TS822ILT?
For technical support, including TS822ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS822ILT requirements.
6.How does Aetrix verify that TS822ILT is sourced from the original manufacturer or authorized distributors?
All TS822ILT 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 TS822ILT meets industry standards.
7.What is the process for return or replacement of TS822ILT?
All TS822ILT units undergo pre-shipment inspection (PSI). If there is an issue with TS822ILT, 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 TS822ILT part is unused and in its original packaging.
Return procedure for TS822ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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