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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

STMicroelectronics TS822AIZ

Name: TS822AIZ
Brand: STMicroelectronics
SKU: TS822AIZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS822AIZ

Manufacturer:: STMicroelectronics

Category:: Voltage Reference

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: TS822AIZ.pdf

Description:: IC VREF SHUNT 1% TO92-3

Quantity:: RFQ Add To RFQ list

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Inventory:1,445

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Product details

Overview

TS822AIZ from STMicroelectronics is a 2.5V, ±1% precision micropower shunt voltage reference in SOT23-3 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 signal conditioning in battery-operated instrumentation and SMPS feedback loops.

For engineers reviewing the TS822AIZ datasheet, TS822AIZ pinout, TS822AIZ application, or TS822AIZ equivalent, key selection criteria include ultra-low operating current (40µA typ.), tight initial tolerance (±1%), capacitive-load stability, and industrial temperature performance - all verified per STMicroelectronics' August 2007 Rev 2 specification.

Technical Context

The TS822AIZ functions as a two-terminal shunt reference, sinking cathode current to regulate voltage across its anode–cathode terminals. Its operation requires external series resistor to set operating current between 50µA (min) and 15mA (max), with reverse breakdown voltage tightly controlled at 2.475V to 2.525V at 25°C.

It exhibits low dynamic impedance (0.2Ω to 0.7Ω over 1–15mA), wideband noise of 35nV/√Hz (10Hz–10kHz), and long-term stability of 120ppm after 1000 hours - enabling high-accuracy, low-drift references in space-constrained, power-sensitive designs without requiring op-amp buffering.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	2.50V nominal, ±1% initial accuracy at 25°C - ensures precise ADC/DAC biasing without trimming.
Operating Current	40µA typical, 50µA min - enables operation from microamp-level bias sources in energy-harvesting systems.
Temp Coefficient	≤100ppm/°C - limits drift to ±0.85mV over full -40°C to +85°C range for stable sensor excitation.
Static Impedance	0.2Ω to 0.7Ω (1–15mA) - minimizes load-induced voltage error in varying-current applications like SMPS feedback.
Noise Density	35nV/√Hz (10Hz–10kHz) - supports high-resolution measurement circuits without added filtering overhead.
Long-Term Stability	120ppm @ 1000hrs - reduces calibration frequency in field-deployed test equipment.

Pinout & Package

SOT23-3L plastic micropackage (3.04mm × 2.64mm × 1.02mm), lead-free ECOPACK® compliant, rated for 260°C soldering (10s).

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Reference ground return path	Connected to system GND; carries full cathode current; must be low-impedance for stability.
Cathode (Pin 2)	Regulated output node	Provides 2.5V reference; connects to feedback divider or load; requires external series resistor.
No Connect (Pin 3)	Unused terminal	Internally unconnected; left floating per STMicroelectronics mechanical drawing; no electrical function.

Key Features

Feature	Design Value
Capacitive-load stability	Validated with CL = 0 to 10µF - eliminates need for isolation resistor in LDO/SMPS feedback networks.
Ultra-low quiescent current	40µA typical - extends battery life in portable multimeters and wireless sensor nodes beyond 10 years.
Industrial temperature range	-40°C to +85°C operation - supports deployment in outdoor industrial controllers without derating.
Low dynamic impedance	0.2Ω at 1mA - maintains <1mV regulation error under 200µA load transients in data acquisition front-ends.

Applications

Battery-Powered Multimeter

Isolated SMPS Feedback

Use Scenario: Portable handheld DMM requiring stable 2.5V reference for 16-bit SAR ADC over 0–100% battery discharge.

IC Role / Device Role / Timing Role: Shunt reference providing precision voltage for ADC reference input and internal DAC calibration.

Use Value: ±1% initial tolerance and 100ppm/°C TC ensure <0.02% full-scale error across temperature and battery voltage drop.

Use Scenario: Flyback converter with optocoupler feedback where secondary-side reference must survive 15mA transient loads.

IC Role / Device Role / Timing Role: Cathode-regulated voltage source setting feedback threshold for TL431-like control loop.

Use Value: 0.2Ω dynamic impedance and 15mA max current rating maintain <3mV output deviation during load steps.

Portable Gas Detector

Medical Pulse Oximeter

Use Scenario: Battery-powered electrochemical sensor interface needing low-noise, low-drift reference for transimpedance amplifier bias.

IC Role / Device Role / Timing Role: Low-noise (35nV/√Hz) shunt reference establishing bias point for analog front-end signal chain.

Use Value: Wideband noise performance avoids post-processing filtering; 40µA current enables >5-year coin-cell operation.

Use Scenario: Wearable pulse oximeter using red/IR LED drivers with synchronized ADC sampling.

IC Role / Device Role / Timing Role: Precision 2.5V reference for LED current DAC and photodiode TIA offset calibration.

Use Value: 120ppm long-term stability reduces recalibration intervals; SOT23-3 footprint saves PCB area in compact flex assemblies.

Equivalent & Alternatives

The following parts are listed as comparable options for similar shunt voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TL431ACDBVR	2.495V nominal, ±0.5% initial tolerance, 92ppm/°C TC, 1mA min operating current	Requires higher minimum current; better accuracy but less suitable for sub-100µA systems	Select when tighter initial tolerance outweighs current budget constraints
MAX6008AEUR+T	2.500V nominal, ±0.2% initial tolerance, 75ppm/°C TC, 35µA typical current	Lower noise (20nV/√Hz), but only rated to +70°C and lacks capacitive-load stability data	Select for lab-grade instrumentation where extended temperature range is not required

Compared with TL431ACDBVR and MAX6008AEUR+T, the TS822AIZ uniquely balances ultra-low current (40µA), industrial temperature range (-40°C to +85°C), and proven capacitive-load stability - making it optimal for battery-powered field instruments where size, longevity, and environmental robustness are prioritized over sub-0.5% initial accuracy.

Availability

TS822AIZ is available at Aetrix Electronics and suitable for battery chargers, portable instrumentation, switch-mode power supplies, and battery-operated equipment requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TS822AIZ 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 sensing solutions for industrial, automotive, and consumer markets.

The TS822 series belongs to ST's precision analog reference portfolio, engineered specifically for space-constrained, low-power applications demanding stable voltage references without active buffering or complex compensation networks.

FAQ

What is the minimum operating current for TS822AIZ at -40°C?

The minimum operating current is 60µA across the full industrial temperature range (-40°C to +85°C), as specified in Table 4 of the STMicroelectronics datasheet. At 25°C, the typical minimum is 50µA, but design must accommodate the 60µA worst-case value to ensure regulation at cold extremes.

Can TS822AIZ drive a 10µF capacitor directly without oscillation?

Yes - STMicroelectronics explicitly validates stability with up to 10µF capacitive load in Figure 6 and the "High stability when used with capacitive loads" feature bullet. No series isolation resistor is required, unlike many shunt references that demand RC damping networks.

Is TS822AIZ RoHS and REACH compliant?

Yes - the TS822AIZ uses STMicroelectronics' ECOPACK® packaging, which features lead-free second-level interconnects and complies with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed in the "Package information" section (page 6) of the official datasheet.

How does the 100ppm/°C temperature coefficient translate to voltage drift over temperature?

Over the -40°C to +85°C range (125°C span), the maximum drift is 125°C × 100ppm/°C = 12,500ppm = 1.25% of 2.5V = ±31.25mV. Combined with ±25mV initial tolerance (±1%), total worst-case deviation is ±56.25mV (±2.25%) - verified in Figure 4's ±1% band.

TS822AIZ 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:: ±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:: Through Hole

Supplier Device Package:: TO-92-3

TS822AIZ FAQ

1.How can I place an order for TS822AIZ through Aetrix?

Please submit a Request for Quotation (RFQ) for TS822AIZ 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 TS822AIZ reliable?

The price and inventory of TS822AIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS822AIZ is usually 5 days.

3.What payment methods are accepted for TS822AIZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS822AIZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS822AIZ?

TS822AIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS822AIZ 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 TS822AIZ?

For technical support, including TS822AIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS822AIZ requirements.

6.How does Aetrix verify that TS822AIZ is sourced from the original manufacturer or authorized distributors?

All TS822AIZ 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 TS822AIZ meets industry standards.

7.What is the process for return or replacement of TS822AIZ?

All TS822AIZ units undergo pre-shipment inspection (PSI). If there is an issue with TS822AIZ, 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 TS822AIZ part is unused and in its original packaging.

Return procedure for TS822AIZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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