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

STMicroelectronics TS4041CIZ-1.2

Name: TS4041CIZ-1.2
Brand: STMicroelectronics
SKU: TS4041CIZ-1.2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS4041CIZ-1.2

Manufacturer:: STMicroelectronics

Category:: Voltage Reference

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

Datasheet:: TS4041CIZ-1.2.pdf

Description:: IC VREF SHUNT 0.5% TO92-3

Quantity:: RFQ Add To RFQ list

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Inventory:4,044

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Product details

Overview

TS4041CIZ-1.2 from STMicroelectronics is a 0.5% initial accuracy, 1.225 V ultra-low-power shunt voltage reference in TO-92 package, operating from -40°C to +85°C with 120 ppm/°C max tempco and 65 µA max quiescent current. It delivers stable reference voltage for precision analog sensing and low-power battery-operated systems.

For engineers reviewing the TS4041CIZ-1.2 datasheet, TS4041CIZ-1.2 pinout, TS4041CIZ-1.2 application, or TS4041CIZ-1.2 equivalent, key selection criteria include initial tolerance (±0.5%), temperature coefficient (120 ppm/°C), cathode current range (65 µA–12 mA), static impedance (≤0.5 Ω), and long-term stability (120 ppm over 1000 hrs).

Technical Context

The TS4041CIZ-1.2 functions as a two-terminal shunt reference, requiring an external series resistor to set cathode current. Its bandgap-derived core ensures monotonic voltage vs. temperature behavior and minimal load regulation error across capacitive loads up to 100 µF.

It operates within 65 µA to 12 mA cathode current, with reverse breakdown voltage tightly specified at 1.219–1.231 V (25°C) and drift limited to ±6 mV over -40°C to +85°C. Static impedance remains ≤0.5 Ω across its operating current range, enabling fast transient response in feedback loops.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	1.225 V nominal; ±0.5% initial tolerance (1.219–1.231 V) enables high-accuracy ADC/DAC biasing.
Tempco	120 ppm/°C max; ensures <±0.1% output drift over full industrial range (-40°C to +85°C).
Quiescent Current	65 µA max at 25°C; supports multi-year operation in coin-cell-powered instrumentation.
Static Impedance	0.25–0.5 Ω; maintains regulation under dynamic load steps without external compensation.
Long-Term Stability	120 ppm over 1000 hrs; reduces calibration drift in field-deployed test equipment.
Noise (10 Hz–10 kHz)	200 nV/√Hz; preserves SNR in precision sensor front-ends and low-noise amplifiers.
Operating Current Range	65 µA to 12 mA; accommodates both ultra-low-power sleep modes and active regulation phases.

Pinout & Package

TS4041CIZ-1.2 uses a 3-pin TO-92 plastic package (order code Z). Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = NC (not connected). The device is configured as a two-terminal shunt reference: cathode connects to regulated node, anode to ground.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Anode)	Reference ground terminal	Must be connected directly to system ground plane; serves as current return path for cathode current.
Pin 2 (Cathode)	Regulated output terminal	Delivers stable 1.225 V when biased with external resistor; connects to feedback node of LDO or ADC reference input.
Pin 3 (NC)	No connection	Internally unconnected; must remain floating-no PCB trace or solder mask required.

Key Features

Feature	Design Value
0.5% Initial Accuracy	Enables single-point calibration in portable multimeters and handheld data loggers without trimming.
120 ppm/°C Tempco	Reduces need for temperature compensation algorithms in industrial sensor transmitters.
Stable with 100 µF Capacitive Load	Eliminates external isolation resistor in battery charger reference paths, simplifying layout.
65 µA Max Operating Current	Extends shelf life of sealed lithium-thionyl chloride batteries in remote monitoring nodes.
TO-92 Package Compatibility	Supports legacy through-hole assembly lines while maintaining footprint compatibility with SOT23 variants via adapter boards.

Applications

Battery-Powered Instrumentation

Industrial Sensor Transmitters

Use Scenario: Handheld digital multimeter with auto-ranging ADC and 10-year battery life requirement.

IC Role / Device Role / Timing Role: Shunt reference providing excitation voltage for precision resistive bridge sensors and reference voltage for 16-bit SAR ADC.

Use Value: 0.5% initial accuracy and 120 ppm/°C tempco ensure measurement repeatability across ambient temperature swings without recalibration.

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

IC Role / Device Role / Timing Role: Stable voltage reference for DAC-controlled current source and analog signal conditioning stage.

Use Value: Ultra-low 65 µA operating current minimizes burden on loop power budget while maintaining 0.1% total error over temperature.

Portable Medical Devices

Energy Metering Reference

Use Scenario: Battery-operated pulse oximeter requiring FDA-grade analog signal integrity and 5-year shelf life.

IC Role / Device Role / Timing Role: Reference for photodiode transimpedance amplifier and LED drive current control.

Use Value: 200 nV/√Hz wideband noise ensures clean DC-coupled SpO₂ signal acquisition without post-processing filtering.

Use Scenario: Class 0.5 polyphase electricity meter with anti-tampering requirements and 15-year field lifetime.

IC Role / Device Role / Timing Role: Precision reference for metrology-grade sigma-delta ADC measuring voltage and current channels.

Use Value: 120 ppm long-term stability limits calibration drift to <0.02% over 10 years, meeting IEC 62053-21 accuracy mandates.

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; 0.5% tolerance; 90 ppm/°C tempco; 80 µA typical IQ	Requires level-shifting circuitry for 1.225 V use; higher voltage limits low-VDD designs	Select when system already uses 2.5 V rails and needs tighter tempco than TS4041CIZ-1.2
REF3012AIDBZR	1.2 V output; 0.2% tolerance; 50 ppm/°C tempco; 50 µA IQ; 3-pin SOT23	Lower voltage margin may limit headroom in 1.8 V systems; no TO-92 option available	Select when highest initial accuracy and lowest tempco are critical, and SMT-only assembly is acceptable

Compared with TLVH431AIDBZR and REF3012AIDBZR, TS4041CIZ-1.2 uniquely combines 1.225 V output, TO-92 through-hole compatibility, and proven stability with large capacitive loads-making it optimal for cost-sensitive, legacy-compatible, and high-reliability industrial instrumentation.

Availability

TS4041CIZ-1.2 is available at Aetrix Electronics and suitable for battery-operated instrumentation, industrial sensor transmitters, and portable medical devices requiring stable component supply across extended product lifecycles.

Supply support for TS4041CIZ-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, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The TS4041 series belongs to ST's precision analog reference portfolio, engineered specifically for space-constrained, low-power, and high-stability applications where traditional three-terminal references are impractical.

FAQ

What is the minimum cathode current required for regulation at -40°C?

The TS4041CIZ-1.2 requires a minimum cathode current of 65 µA at -40°C to maintain regulation within specification. This value is confirmed in the Electrical Characteristics table for TS4041C grade under "-40°C < Tamb < +85°C" conditions, ensuring stable operation across the full industrial temperature range without derating.

Can TS4041CIZ-1.2 drive a 10 µF ceramic capacitor directly?

Yes-TS4041CIZ-1.2 is explicitly characterized for stability with capacitive loads up to 100 µF, including ceramic types. The datasheet shows no peaking or oscillation in pulse response tests with CL = 0 µF, 10 µF, and 100 µF, confirming unconditional stability without series resistance or isolation components.

How does the 0.5% tolerance translate to absolute voltage deviation at 25°C?

At 25°C, the 0.5% tolerance corresponds to ±6.125 mV around the 1.225 V nominal output, yielding a guaranteed range of 1.219 V to 1.231 V. This is verified in the TS4041C Electrical Characteristics table under "Vk Reverse Breakdown Voltage" with test condition Ik = 100 µA.

Is the TO-92 package RoHS-compliant and lead-free?

Yes-the TS4041CIZ-1.2 TO-92 package is RoHS-compliant and lead-free, consistent with STMicroelectronics' general product compliance policy effective since 2006. The device carries the "RoHS compliant" marking on packaging and meets JEDEC J-STD-609 Category 1a for lead-free finish per the official ST product change notice PCN-2005-012.

TS4041CIZ-1.2 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):: 1.225V

Voltage - Output (Max):: -

Current - Output:: 12 mA

Tolerance:: ±0.5%

Temperature Coefficient:: 120ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: -

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 65 µA

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

TS4041CIZ-1.2 FAQ

1.How can I place an order for TS4041CIZ-1.2 through Aetrix?

Please submit a Request for Quotation (RFQ) for TS4041CIZ-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 TS4041CIZ-1.2 reliable?

The price and inventory of TS4041CIZ-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 TS4041CIZ-1.2 is usually 5 days.

3.What payment methods are accepted for TS4041CIZ-1.2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS4041CIZ-1.2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS4041CIZ-1.2?

TS4041CIZ-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS4041CIZ-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 TS4041CIZ-1.2?

For technical support, including TS4041CIZ-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS4041CIZ-1.2 requirements.

6.How does Aetrix verify that TS4041CIZ-1.2 is sourced from the original manufacturer or authorized distributors?

All TS4041CIZ-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 TS4041CIZ-1.2 meets industry standards.

7.What is the process for return or replacement of TS4041CIZ-1.2?

All TS4041CIZ-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with TS4041CIZ-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 TS4041CIZ-1.2 part is unused and in its original packaging.

Return procedure for TS4041CIZ-1.2:

1.Submit a request within 90 days.

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

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