Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics TS4061BILT-1.225

Name: TS4061BILT-1.225
Brand: STMicroelectronics
SKU: TS4061BILT-1.225
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TS4061BILT-1.225

Manufacturer:: STMicroelectronics

Category:: Voltage Reference

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

Datasheet:: TS4061BILT-1.225.pdf

Description:: IC VREF SHUNT 0.2% SOT23-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,658

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TS4061BILT-1.225 from STMicroelectronics is a precision micropower shunt voltage reference delivering a fixed 1.225 V output with ±0.2% initial accuracy at 25 °C, 35 ppm/°C max temperature coefficient, and ultra-low 10 µA operating current. It operates across –40 to +85 °C and is used in battery-powered instrumentation for stable low-current biasing.

For engineers reviewing the TS4061BILT-1.225 datasheet, TS4061BILT-1.225 pinout, TS4061BILT-1.225 application, or TS4061BILT-1.225 equivalent, key selection criteria include shunt reference stability under capacitive loads, low-frequency noise (10 µV_p-p), thermal hysteresis (120 ppm), and SOT23-3L package compatibility with space-constrained PCB layouts.

Technical Context

The TS4061BILT-1.225 functions as a two-terminal shunt reference, sinking current to maintain a precise 1.225 V cathode-to-anode voltage. Its operation requires an external current source and supports regulation down to 10 µA minimum operating current, with static impedance of 0.15–0.3 Ω and thermal hysteresis of 120 ppm.

It exhibits low-frequency noise of 10 µV_p-p (0.1–10 Hz) and wideband noise of 95 µV_RMS (10 Hz–10 kHz), and remains stable with capacitive loads-no series resistance required. Temperature coefficient is guaranteed ≤35 ppm/°C over –40 to +85 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.225 V; enables direct replacement of 1.2 V references in ADC/DAC bias networks without resistor scaling.
Initial Accuracy	±0.2% at 25 °C; ensures <2.45 mV absolute error in precision sensor signal conditioning paths.
Tempco	≤35 ppm/°C; contributes <3.0 mV max drift over full industrial range, critical for uncalibrated portable meters.
Operating Current	10 µA min / 15 mA max; allows operation from high-impedance dividers or microcontroller GPIO pins.
Low-Freq Noise	10 µV_p-p (0.1–10 Hz); preserves SNR in 24-bit delta-sigma ADC front-ends.
Static Impedance	0.15–0.3 Ω; minimizes load-induced voltage shift in multi-channel reference distribution.

Pinout & Package

TS4061BILT-1.225 is supplied in the SOT23-3L package-a 3-pin, surface-mount, lead-free, RoHS-compliant outline measuring 2.80–3.04 mm × 2.10–2.64 mm × 0.89–1.12 mm (height).

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Reference return path	Connected to system ground; must be low-impedance to avoid regulation error from IR drop.
Cathode (Pin 2)	Stable voltage output node	Provides 1.225 V referenced to Anode; sinks all operating current; connects to load and bias resistors.
NC (Pin 3)	No-connect terminal	Must remain unconnected or tied to Anode per datasheet; no internal connection-omitting trace saves layout area.

Key Features

Feature	Design Value
Ultra-low operating current	10 µA typical at 25 °C enables >10-year battery life in coin-cell-powered data loggers.
Capacitive-load stability	No external compensation needed up to 100 nF; simplifies layout in noisy mixed-signal PCBs.
Low thermal hysteresis	120 ppm ensures repeatable voltage after thermal cycling-critical for field-deployed calibration equipment.
Low LF noise performance	10 µV_p-p (0.1–10 Hz) supports sub-16-bit effective resolution in precision weigh-scale amplifiers.

Applications

Battery-Powered Multimeters

Portable Gas Sensors

Use Scenario: Handheld digital multimeter requiring stable reference for 3½-digit ADC conversion during intermittent measurement cycles.

IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and scaling reference for dual-slope integrator ADC.

Use Value: 10 µA quiescent current extends CR2032 battery life beyond 5 years; ±0.2% accuracy meets IEC 61010 Class 2 tolerance.

Use Scenario: Low-power electrochemical gas sensor module operating on Li-SOCl₂ primary cell with 10-year shelf life.

IC Role / Device Role / Timing Role: Reference for transimpedance amplifier converting nanoamp-level sensor current to voltage.

Use Value: 35 ppm/°C tempco limits zero-drift to <1.5 mV over operating range; SOT23-3L footprint fits <5 mm² board area.

Medical ECG Front-Ends

Industrial RTD Signal Chains

Use Scenario: Wearable ECG patch with ultra-low-power analog front-end sampling at 250 SPS using SAR ADC.

IC Role / Device Role / Timing Role: Precision bias reference for programmable-gain instrumentation amplifier and ADC reference input.

Use Value: 10 µV_p-p low-frequency noise prevents baseline wander artifacts; stable regulation ensures consistent common-mode rejection.

Use Scenario: DIN-rail-mounted temperature transmitter converting Pt100 resistance to 4–20 mA loop with HART modulation.

IC Role / Device Role / Timing Role: Stable excitation reference for constant-current source driving RTD bridge.

Use Value: 0.3 Ω static impedance minimizes self-heating error in 1 mA excitation; industrial temp range ensures reliability in factory environments.

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	Adjustable (2.5 V min), ±0.5% initial accuracy, 100 µA min operating current	Requires external resistor divider; higher current increases power in energy-harvesting nodes	Select when adjustable output or higher voltage (>1.225 V) is required; not drop-in for fixed 1.225 V use.
REF3012AIDBZR	Fixed 1.2 V, ±0.2% accuracy, 50 µA operating current, 50 ppm/°C tempco	Higher current draw reduces battery life; 1.2 V output requires gain adjustment in existing 1.225 V designs	Choose if 1.2 V matches system DAC/ADC reference; verify 1.225 → 1.2 V offset impact on calibration.

Compared with TLVH431ACDBVR and REF3012AIDBZR, TS4061BILT-1.225 offers the lowest operating current (10 µA) and exact 1.225 V output-making it optimal for legacy designs targeting that voltage and ultra-low-power constraints where every microamp matters.

Availability

TS4061BILT-1.225 is available at Aetrix Electronics and suitable for portable medical devices, battery-operated test equipment, and industrial sensor transmitters requiring stable component supply with guaranteed long-term availability.

Supply support for TS4061BILT-1.225 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 sensor solutions for industrial, automotive, and consumer markets.

The TS4061 belongs to ST's precision analog reference product line, engineered specifically for micropower, high-accuracy shunt references in space- and energy-constrained instrumentation and portable systems.

FAQ

What is the minimum operating current required for regulation?

The TS4061BILT-1.225 requires a minimum operating current of 10 µA at 25 °C to maintain regulation, rising to 12 µA across the full –40 to +85 °C range. Below this threshold, output voltage deviates nonlinearly and cannot be guaranteed within datasheet specifications.

Can TS4061BILT-1.225 drive a 100 nF capacitive load directly?

Yes-the device is explicitly characterized and stable with up to 100 nF capacitive loads without external series resistance or compensation. Figure 9 in the datasheet confirms clean start-up waveforms under this condition, making it suitable for filtering-sensitive ADC reference inputs.

Is Pin 3 (NC) electrically connected internally?

No-Pin 3 is a true no-connect terminal with no internal bond wire or silicon connection. The datasheet states it "must be left unconnected or connected to anode"; tying it to Anode is permissible for mechanical reinforcement but adds no electrical function.

How does thermal hysteresis affect calibration stability?

Thermal hysteresis is specified at 120 ppm-meaning voltage measured at 25 °C after cycling to –40 °C differs from voltage measured at 25 °C after cycling to +85 °C by up to 147 µV. This impacts recalibration intervals in field instruments where ambient temperature swings occur repeatedly.

TS4061BILT-1.225 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:: 15 mA

Tolerance:: ±0.2%

Temperature Coefficient:: 35ppm/°C

Noise - 0.1Hz to 10Hz:: 10µVp-p

Noise - 10Hz to 10kHz:: 95µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 12 µA

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

TS4061BILT-1.225 FAQ

1.How can I place an order for TS4061BILT-1.225 through Aetrix?

Please submit a Request for Quotation (RFQ) for TS4061BILT-1.225 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 TS4061BILT-1.225 reliable?

The price and inventory of TS4061BILT-1.225 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS4061BILT-1.225 is usually 5 days.

3.What payment methods are accepted for TS4061BILT-1.225?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS4061BILT-1.225 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS4061BILT-1.225?

TS4061BILT-1.225 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS4061BILT-1.225 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 TS4061BILT-1.225?

For technical support, including TS4061BILT-1.225 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS4061BILT-1.225 requirements.

6.How does Aetrix verify that TS4061BILT-1.225 is sourced from the original manufacturer or authorized distributors?

All TS4061BILT-1.225 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 TS4061BILT-1.225 meets industry standards.

7.What is the process for return or replacement of TS4061BILT-1.225?

All TS4061BILT-1.225 units undergo pre-shipment inspection (PSI). If there is an issue with TS4061BILT-1.225, 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 TS4061BILT-1.225 part is unused and in its original packaging.

Return procedure for TS4061BILT-1.225:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…