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

STMicroelectronics TS824ILT-1.2

Name: TS824ILT-1.2
Brand: STMicroelectronics
SKU: TS824ILT-1.2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS824ILT-1.2

Manufacturer:: STMicroelectronics

Category:: Voltage Reference

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: TS824ILT-1.2.pdf

Description:: IC VREF SHUNT 1% SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:287

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Product details

Overview

TS824ILT-1.2 from STMicroelectronics is a micropower shunt voltage reference delivering 1.225 V ±1% at 25°C, with 50 ppm/°C max temperature coefficient, 45 µA max operating current, and stable operation with capacitive loads - used in precision ADC biasing and portable instrumentation power rails.

For engineers reviewing the TS824ILT-1.2 datasheet, TS824ILT-1.2 pinout, TS824ILT-1.2 application, or TS824ILT-1.2 equivalent, key selection criteria include low-temperature drift, SOT23-3 footprint compatibility, cathode-current-dependent output stability, and long-term drift of 120 ppm over 1000 hours.

Technical Context

The TS824ILT-1.2 operates as a two-terminal shunt reference, regulating voltage by sinking adjustable cathode current (40–12 mA) while maintaining 1.225 V across its terminals. Its internal bandgap core achieves thermal stability via curvature compensation, enabling ±1.325% total tolerance over –40°C to +85°C.

It exhibits low static impedance (0.25–1.5 Ω), wide-band noise of 200 nV/√Hz (100 Hz–10 kHz), and guaranteed start-up at 100 µA cathode current - making it suitable for low-power sensor signal conditioning where supply headroom is constrained.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	1.225 V ±1% at 25°C - sets precise bias point for 12-bit+ SAR ADCs and low-voltage comparators
Tempco	50 ppm/°C max - contributes ≤±0.0325 V drift over full industrial range (–40°C to +85°C)
Operating Current	40–12,000 µA - supports ultra-low-power sleep modes and high-accuracy active regulation
Static Impedance	0.25–1.5 Ω - ensures minimal load-induced voltage shift under dynamic current demand
Long-Term Drift	120 ppm / 1000 hrs - enables calibration-free operation in field-deployed data loggers
Noise (100 Hz–10 kHz)	200 nV/√Hz - avoids degradation of ENOB in 16-bit delta-sigma ADC front-ends
Capacitive Load Stability	Stable with any value - eliminates need for external isolation resistors in battery-monitoring circuits

Pinout & Package

TS824ILT-1.2 is housed in a SOT23-3 plastic micropackage (JEDEC TO-236AB), measuring 2.90 × 2.64 × 1.02 mm, with gull-wing leads and 0.95 mm pitch. The package supports reflow soldering per JEDEC J-STD-020 and has R_THJA = 340°C/W.

Pin/Terminal	Circuit Role	Design Meaning
Cathode	Current sink node	Connected to regulated voltage rail; current drawn here determines reference accuracy and thermal dissipation
Anode	Ground reference	Return path for cathode current; must be low-impedance to avoid ground bounce errors
NC	No connection	Pin 3 is internally unconnected - must remain floating or grounded per layout best practice

Key Features

Feature	Design Value
Micropower operation	45 µA max quiescent current enables >10-year battery life in coin-cell-powered IoT sensors
Low tempco	50 ppm/°C max ensures <±0.01 V error in outdoor industrial enclosures without active thermal control
Capacitive-load immunity	Stable with 0–10 µF ceramic or tantalum loads - simplifies PCB layout in space-constrained wearables
High precision at 25°C	±1% initial tolerance reduces system-level calibration overhead in factory-programmed medical devices
Robust ESD rating	2 kV HBM protects against handling damage during manual assembly of portable test equipment

Applications

Battery-Powered Data Loggers

Portable Medical Sensors

Use Scenario: Continuous temperature/humidity logging in remote environmental monitoring nodes powered by CR2032 cells.

IC Role / Device Role / Timing Role: Shunt reference for 16-bit sigma-delta ADC input scaling and internal LDO feedback divider.

Use Value: 45 µA operating current extends battery life beyond 5 years; 120 ppm long-term drift avoids recalibration in sealed units.

Use Scenario: Single-use ECG patch with integrated analog front-end and BLE radio.

IC Role / Device Role / Timing Role: Precision bias source for op-amp gain-setting resistors and ADC reference input.

Use Value: 50 ppm/°C tempco maintains ECG amplitude accuracy across skin-contact temperature variations (25–40°C).

Industrial Process Transmitters

Smart Energy Meters

Use Scenario: 4–20 mA loop-powered pressure transmitter operating in unheated outdoor cabinets (–40°C to +85°C).

IC Role / Device Role / Timing Role: Stable voltage reference for DAC output scaling and sensor excitation circuitry.

Use Value: ±1.325% total tolerance over temperature ensures <0.1% FS error in 12-bit process control resolution.

Use Scenario: DIN-rail mounted electricity meter with metrology-grade ADC and tamper detection.

IC Role / Device Role / Timing Role: Reference for polyphase energy measurement IC requiring sub-0.1% gain stability.

Use Value: 0.25 Ω static impedance prevents gain shift during RF noise bursts from switching power supplies.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLVH431AIDBZR	2.5 V fixed output; 100 ppm/°C max tempco; 80 µA typical I_Q	Requires external resistor divider for 1.225 V; higher noise (350 nV/√Hz)	Choose when existing design uses TLVH431 footprint and 2.5 V is acceptable with scaling
REF3012AIDBZR	1.2 V output; 50 ppm/°C max; 50 µA max I_Q; series topology	Three-terminal series regulator - needs input headroom; not drop-in for shunt configurations	Prefer only if supply margin allows ≥1.7 V input and board redesign accommodates extra pin

Compared with TLVH431AIDBZR and REF3012AIDBZR, the TS824ILT-1.2 uniquely combines 1.225 V output, shunt topology, and 45 µA max current - enabling direct replacement in legacy SOT23-3 shunt reference layouts without resistor recalculations or PCB changes.

Availability

TS824ILT-1.2 is available at Aetrix Electronics and suitable for battery-powered data loggers, portable medical sensors, and industrial process transmitters requiring stable component supply with consistent parametric performance across production lots.

Supply support for TS824ILT-1.2 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 TS824 series belongs to ST's precision analog reference portfolio, engineered specifically for ultra-low-power, high-stability voltage referencing in space- and energy-constrained edge sensing applications.

FAQ

What is the minimum cathode current required for regulation?

The TS824ILT-1.2 requires a minimum cathode current of 40 µA at 25°C to maintain regulation within specification. At full temperature range (–40°C to +85°C), the minimum increases to 50 µA. Below this threshold, output voltage deviates nonlinearly and cannot be guaranteed.

Can TS824ILT-1.2 drive a 10 µF ceramic capacitor directly?

Yes - the device is explicitly characterized and guaranteed stable with any capacitive load, including 10 µF X7R ceramics, across the full –40°C to +85°C range. No series isolation resistor is needed, unlike many competing shunt references.

How does long-term drift impact calibration intervals?

With 120 ppm drift over 1000 hours (≈6 weeks), the TS824ILT-1.2 accumulates ~250 ppm drift per year. For systems requiring <0.1% absolute accuracy, annual recalibration is recommended - aligning with typical field maintenance cycles for industrial instrumentation.

Is Pin 3 (NC) safe to connect to ground?

Yes - Pin 3 is internally unconnected and may be tied to ground without affecting performance. Doing so improves mechanical stability during reflow and reduces potential for floating-node noise coupling in high-EMI environments like motor drives.

TS824ILT-1.2 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):: 1.225V

Voltage - Output (Max):: -

Current - Output:: 12 mA

Tolerance:: ±1%

Temperature Coefficient:: 50ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: -

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 50 µA

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

TS824ILT-1.2 FAQ

1.How can I place an order for TS824ILT-1.2 through Aetrix?

Please submit a Request for Quotation (RFQ) for TS824ILT-1.2 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 TS824ILT-1.2 reliable?

The price and inventory of TS824ILT-1.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS824ILT-1.2 is usually 5 days.

3.What payment methods are accepted for TS824ILT-1.2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS824ILT-1.2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS824ILT-1.2?

TS824ILT-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS824ILT-1.2 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 TS824ILT-1.2?

For technical support, including TS824ILT-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS824ILT-1.2 requirements.

6.How does Aetrix verify that TS824ILT-1.2 is sourced from the original manufacturer or authorized distributors?

All TS824ILT-1.2 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 TS824ILT-1.2 meets industry standards.

7.What is the process for return or replacement of TS824ILT-1.2?

All TS824ILT-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with TS824ILT-1.2, 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 TS824ILT-1.2 part is unused and in its original packaging.

Return procedure for TS824ILT-1.2:

1.Submit a request within 90 days.

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

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