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STMicroelectronics TS822IZ
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- Part No.:
- TS822IZ
- Manufacturer:
- STMicroelectronics
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
TS822IZ.pdf
- Description:
- IC VREF SHUNT 2% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,578
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Product details
Overview
TS822IZ 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 TS822IZ datasheet, TS822IZ pinout, TS822IZ application, or TS822IZ 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 TS822IZ operates as a two-terminal shunt reference, requiring an external series resistor to set cathode current between 50µA and 15mA. Its internal bandgap circuitry achieves stable 2.5V regulation across -40°C to +85°C with minimal drift-30–100ppm/°C-and low wideband noise (35nV/√Hz, 10Hz–10kHz).
It exhibits high stability under varying load capacitance (0–100µF) and maintains reverse static impedance below 1.2Ω across its full operating current and temperature range, enabling robust performance in SMPS feedback networks and portable instrumentation where supply headroom is limited.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.50V ±2% at 25°C; ensures accurate ADC/DAC reference or error amplifier setpoint in industrial-grade designs. |
| Operating Current | 50µA min to 15mA max; supports ultra-low-power operation while maintaining regulation in battery-backed systems. |
| Temp Coefficient | ≤100ppm/°C; limits output drift to ±0.25mV/°C over -40°C to +85°C, critical for precision measurement front-ends. |
| Static Impedance | ≤1.2Ω (Ik = Ik-min to 1mA); minimizes load-induced voltage shift in dynamic current-sink applications. |
| Noise Density | 35nV/√Hz (10Hz–10kHz); reduces contribution to system noise floor in sensitive analog signal chains. |
| Long-Term Stability | 120ppm over 1000 hours; enables reliable calibration retention in field-deployed instrumentation. |
Pinout & Package
SOT23-3L plastic micropackage (JEDEC MO-178AA), 2.9mm × 2.64mm footprint, 0.95mm pitch, lead-free ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink return path | Connected to ground or low-impedance node; defines reference potential for cathode voltage. |
| Cathode (Pin 2) | Regulated output terminal | Delivers stable 2.5V when biased with external resistor; used directly as reference input to op-amps or comparators. |
| No Connect (Pin 3) | Unused terminal | Internally unconnected; must be left floating or tied to cathode per layout best practice to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40µA typical enables >10-year battery life in coin-cell–powered sensors and meters. |
| Capacitive load stability | Stable with 0–100µF output capacitance, eliminating need for isolation resistors in noisy SMPS environments. |
| Industrial temperature range | -40°C to +85°C operation supports deployment in outdoor equipment and factory-floor controllers without derating. |
| Low-output impedance | Sub-1.2Ω static impedance ensures <0.15mV error under 1mA load transients in closed-loop feedback paths. |
Applications
| Battery Charger Feedback | Portable Instrumentation |
|---|---|
Use Scenario: Precision voltage sensing in lithium-ion charger IC feedback networks. IC Role / Device Role / Timing Role: Shunt reference providing 2.5V setpoint for error amplifier comparison against battery voltage. Use Value: ±2% tolerance and 100ppm/°C TC ensure charge termination accuracy within ±1% over full temperature range. | Use Scenario: Reference source for handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Stable 2.5V reference for 12-bit SAR ADC conversion and display calibration. Use Value: 35nV/√Hz noise and 120ppm long-term stability maintain measurement repeatability across 1000+ operating hours. |
| Switch-Mode Power Supply | Industrial Sensor Interface |
Use Scenario: Secondary-side voltage regulation in isolated flyback converters. IC Role / Device Role / Timing Role: Cathode-connected to optocoupler LED anode; regulates feedback current proportional to output voltage. Use Value: Low 40µA minimum current allows operation with high-value bias resistors, reducing standby power by >30% vs. 78Lxx series. | Use Scenario: Excitation reference for RTD or strain gauge bridges in PLC analog input modules. IC Role / Device Role / Timing Role: Low-drift 2.5V source for ratiometric bridge excitation and ADC reference. Use Value: Matched TC and low impedance minimize gain error drift to <0.05%/°C in 4–20mA transmitter circuits. |
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; 1% initial accuracy; 90ppm/°C TC; 80µA typical IQ. | Requires two external resistors for fixed 2.5V; higher IQ increases standby loss in battery systems. | Preferred when tighter initial tolerance is required and board area permits resistor placement. |
| LM4040CIM3-2.5 | 2.5V shunt reference; ±0.5% initial accuracy; 100ppm/°C TC; 60µA typical IQ; SOIC-3 package. | Larger SOIC-3 footprint; higher thermal resistance limits power dissipation in compact layouts. | Chosen when higher accuracy justifies larger package and cost premium in non-space-constrained designs. |
Compared with TLVH431ACDBVR and LM4040CIM3-2.5, the TS822IZ offers the smallest footprint (SOT23-3), lowest quiescent current (40µA), and no external resistor requirement-making it optimal for miniaturized, ultra-low-power applications where ±2% tolerance is acceptable.
Availability
TS822IZ is available at Aetrix Electronics and suitable for battery chargers, portable instrumentation, switch-mode power supplies, and industrial sensor interfaces requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TS822IZ 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 microcontrollers, power management ICs, analog components, and MEMS sensors for industrial, automotive, and consumer markets.
The TS822IZ belongs to ST's precision analog reference product line, engineered specifically for low-power, high-stability voltage referencing in space-constrained and battery-operated systems across industrial and instrumentation applications.
FAQ
What is the minimum cathode current required for regulation?
The TS822IZ requires a minimum cathode current 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 deviates beyond ±2% tolerance, and static impedance rises significantly-verified in Figure 2 and Table 3 of the official datasheet.
Can the TS822IZ drive a 100µF capacitor directly?
Yes-the TS822IZ is explicitly characterized for stability with output capacitance up to 100µF (see Figures 5–6 and "High stability when used with capacitive loads" in Features). No series isolation resistor is needed, unlike many competing shunt references that oscillate or exhibit overshoot with >1µF loads.
How does the TS822IZ compare to the TS822AILT variant?
The TS822IZ is the standard 2% precision grade; the TS822AILT is the 1% grade (marked L222) with tighter initial tolerance (±1% vs. ±2%) and reduced temperature drift bounds (±25mV vs. ±50mV over -40°C to +85°C). Both share identical pinout, package, and electrical behavior outside initial accuracy and TC specs.
Is the TS822IZ RoHS and REACH compliant?
Yes-the TS822IZ uses STMicroelectronics' ECOPACK® packaging, which meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Lead-free second-level interconnect and JEDEC JESD97 marking are confirmed in the Package Information section (page 6) of the official datasheet.
TS822IZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- TO-92-3
TS822IZ FAQ
1.How can I place an order for TS822IZ through Aetrix?
Please submit a Request for Quotation (RFQ) for TS822IZ 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 TS822IZ reliable?
The price and inventory of TS822IZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS822IZ is usually 5 days.
3.What payment methods are accepted for TS822IZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS822IZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS822IZ?
TS822IZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS822IZ 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 TS822IZ?
For technical support, including TS822IZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS822IZ requirements.
6.How does Aetrix verify that TS822IZ is sourced from the original manufacturer or authorized distributors?
All TS822IZ 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 TS822IZ meets industry standards.
7.What is the process for return or replacement of TS822IZ?
All TS822IZ units undergo pre-shipment inspection (PSI). If there is an issue with TS822IZ, 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 TS822IZ part is unused and in its original packaging.
Return procedure for TS822IZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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