My Inquiry
My Account
STMicroelectronics TS4041EIZ-1.2
,TO-226_straightlead.jpg)
- Part No.:
- TS4041EIZ-1.2
- Manufacturer:
- STMicroelectronics
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
TS4041EIZ-1.2.pdf
- Description:
- IC VREF SHUNT 2% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,338
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TS4041EIZ-1.2 from STMicroelectronics is a 2% initial-accuracy, 1.225 V ultra-low-power shunt voltage reference in TO-92 plastic package, operating from -40°C to +85°C with 65 µA max quiescent current and 150 ppm/°C tempco. It delivers stable reference voltage for precision analog signal conditioning in battery-powered instrumentation and SMPS feedback loops.
For engineers reviewing the TS4041EIZ-1.2 datasheet, TS4041EIZ-1.2 pinout, TS4041EIZ-1.2 application, or TS4041EIZ-1.2 equivalent, key selection criteria include initial tolerance (±2%), cathode current range (65 µA–12 mA), static impedance (≤0.5 Ω), temperature coefficient (≤150 ppm/°C), and capacitive load stability up to 100 µF.
Technical Context
The TS4041EIZ-1.2 functions as a two-terminal shunt reference, requiring an external series resistor to set cathode current between 65 µA and 12 mA. Its bandgap-derived core achieves 1.225 V nominal output with ±2% tolerance at 25°C and ±36 mV drift over -40°C to +85°C.
It exhibits low dynamic impedance (0.25–0.5 Ω) and wideband noise of 200 nV/√Hz (10 Hz–10 kHz), enabling high-precision ADC biasing and closed-loop regulation where low noise and minimal load-induced error are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal; ±2% tolerance at 25°C ensures accurate scaling for 12-bit ADC references. |
| Initial Accuracy | ±2% (TS4041E grade); guarantees reference error ≤24.5 mV at room temperature. |
| Tempco | 150 ppm/°C max; contributes ≤123 µV/°C drift across industrial range, limiting total error to ±0.1% over temperature. |
| Quiescent Current | 65 µA max at 25°C; enables operation from microamp-level supply rails in energy-harvesting sensors. |
| Static Impedance | 0.25–0.5 Ω; minimizes output voltage shift under varying cathode current (e.g., <2.5 mV change from 1 mA to 12 mA). |
| Noise (10 Hz–10 kHz) | 200 nV/√Hz; supports high-resolution measurement systems without added filtering overhead. |
| Operating Temp Range | -40°C to +85°C; validated for use in industrial control modules and automotive cabin electronics. |
Pinout & Package
TS4041EIZ-1.2 uses a 3-pin TO-92 plastic package with standard pinout: Pin 1 = Anode (GND), Pin 2 = Cathode (VREF), Pin 3 = NC (not connected). The package supports through-hole mounting and is compatible with standard TO-92 footprint layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Ground reference terminal | Must be connected directly to system ground plane to minimize noise coupling and ensure stable regulation. |
| Pin 2 (Cathode) | Reference voltage output | Delivers 1.225 V when biased with 65 µA–12 mA cathode current; connects to feedback node of op-amp or ADC reference input. |
| Pin 3 (NC) | No connection | Internally unconnected; must remain floating-no PCB trace or solder joint permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low operating current | 65 µA max enables >10-year battery life in coin-cell–powered portable meters. |
| Capacitive load stability | Stable with up to 100 µF output capacitance-eliminates need for isolation resistors in noisy SMPS environments. |
| Precision over temperature | ±36 mV total drift over -40°C to +85°C supports calibration-free operation in unheated enclosures. |
| Low noise performance | 200 nV/√Hz broadband noise avoids post-processing filtering in 16-bit data acquisition front-ends. |
Applications
| Battery-Powered Instrumentation | Switch-Mode Power Supply Feedback |
|---|---|
Use Scenario: Handheld multimeter using single AA cell with 12-bit SAR ADC. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V reference for ADC full-scale calibration. Use Value: 65 µA quiescent current extends battery life beyond 500 hours; ±2% accuracy eliminates factory recalibration. | Use Scenario: 12 V → 3.3 V buck converter for industrial IoT sensor node. IC Role / Device Role / Timing Role: Precision voltage reference in TL431-like optocoupler feedback loop. Use Value: 150 ppm/°C tempco ensures <±0.5% output voltage variation across ambient temperature swings. |
| Portable Battery Chargers | Industrial Data Acquisition Modules |
Use Scenario: USB-C PD charger with programmable voltage profile for Li-ion cells. IC Role / Device Role / Timing Role: Reference for DAC-controlled current-sense amplifier in charge current regulation path. Use Value: Low 0.5 Ω static impedance prevents gain error drift during fast load transients. | Use Scenario: 4–20 mA transmitter with HART modulation in process automation field device. IC Role / Device Role / Timing Role: Stable excitation source for RTD bridge circuit and ADC reference. Use Value: 200 nV/√Hz noise floor preserves 16-bit effective resolution without oversampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACZ | 2.495 V nominal output; 2% tolerance; higher 100 µA min cathode current; SOT-23-3 package | Requires level-shifting for 1.2 V systems; unsuitable for ultra-low-power designs below 100 µA | Select only if 2.5 V reference and higher current budget are acceptable. |
| LM4040CIM3-1.2 | 1.225 V nominal; 0.5% tolerance; 75 µA max quiescent current; SOT-23-3 package | Tighter initial accuracy but higher cost; same tempco (150 ppm/°C); no TO-92 option | Choose when ±0.5% accuracy is mandatory and surface-mount assembly is preferred. |
Compared with TL431ACZ and LM4040CIM3-1.2, TS4041EIZ-1.2 uniquely combines TO-92 through-hole compatibility, 65 µA ultra-low current, and 1.225 V output-making it optimal for legacy designs, prototyping, and low-volume industrial instruments where board space and power are constrained but leaded packaging is required.
Availability
TS4041EIZ-1.2 is available at Aetrix Electronics and suitable for battery-operated equipment, instrumentation, and switch-mode power supply applications requiring stable component supply, long-lifecycle availability, and through-hole manufacturability.
Supply support for TS4041EIZ-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 belongs to ST's precision voltage reference product line, engineered specifically for low-power, high-stability analog subsystems in space-constrained and battery-sensitive applications.
FAQ
What is the minimum cathode current required for regulation?
The TS4041EIZ-1.2 requires a minimum cathode current of 65 µA at 25°C to maintain regulation within specification. At full temperature range (-40°C to +85°C), the minimum increases to 70 µA. Below this threshold, output voltage drops nonlinearly and cannot guarantee 1.225 V ±2%.
Can TS4041EIZ-1.2 drive a 10 µF ceramic capacitor directly?
Yes-the TS4041EIZ-1.2 is explicitly characterized for stability with capacitive loads up to 100 µF, including ceramic types. No series isolation resistor is needed, unlike many older shunt references, making it ideal for noisy SMPS feedback paths.
Is the TO-92 package RoHS-compliant and lead-free?
Yes-TS4041EIZ-1.2 is manufactured in a RoHS-compliant, lead-free TO-92 package per STMicroelectronics' 2002 product release documentation and subsequent compliance declarations. The plastic body and internal metallization meet EU Directive 2011/65/EU requirements.
How does long-term stability affect calibration intervals in field instruments?
With 120 ppm drift over 1000 hours under 100 µA bias, TS4041EIZ-1.2 accumulates <±0.015% output shift per year-enabling annual calibration cycles in portable test equipment without performance degradation.
TS4041EIZ-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:
- ±2%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 70 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
TS4041EIZ-1.2 FAQ
1.How can I place an order for TS4041EIZ-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TS4041EIZ-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 TS4041EIZ-1.2 reliable?
The price and inventory of TS4041EIZ-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 TS4041EIZ-1.2 is usually 5 days.
3.What payment methods are accepted for TS4041EIZ-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS4041EIZ-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS4041EIZ-1.2?
TS4041EIZ-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS4041EIZ-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 TS4041EIZ-1.2?
For technical support, including TS4041EIZ-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS4041EIZ-1.2 requirements.
6.How does Aetrix verify that TS4041EIZ-1.2 is sourced from the original manufacturer or authorized distributors?
All TS4041EIZ-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 TS4041EIZ-1.2 meets industry standards.
7.What is the process for return or replacement of TS4041EIZ-1.2?
All TS4041EIZ-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with TS4041EIZ-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 TS4041EIZ-1.2 part is unused and in its original packaging.
Return procedure for TS4041EIZ-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS4041EIZ-1.2 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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.
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…
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…
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…
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 …
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…
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…
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…
