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STMicroelectronics TS4041DILT-1.2
- Part No.:
- TS4041DILT-1.2
- Manufacturer:
- STMicroelectronics
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TS4041DILT-1.2.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,915
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Product details
Overview
TS4041DILT-1.2 from STMicroelectronics is a 1.225 V, ±1% initial accuracy, micropower shunt voltage reference in SOT23-3 package, operating from 65 µA to 12 mA over -40°C to +85°C. It delivers 150 ppm/°C max temperature coefficient, 0.5 Ω max static impedance, and 200 nV/√Hz wideband noise-enabling precision biasing in battery-powered instrumentation and SMPS feedback loops.
For engineers reviewing the TS4041DILT-1.2 datasheet, TS4041DILT-1.2 pinout, TS4041DILT-1.2 application, or TS4041DILT-1.2 equivalent, key selection criteria include cathode current range (65 µA–12 mA), thermal stability (150 ppm/°C), low-noise performance (200 nV/√Hz), and SOT23-3 footprint compatibility with space-constrained PCB layouts.
Technical Context
The TS4041DILT-1.2 functions as a two-terminal shunt reference, requiring an external series resistor to set cathode current. Its operation relies on reverse-biased bandgap-derived breakdown, delivering stable 1.225 V output independent of supply voltage variations above Vk + IR drop.
It maintains ±1% tolerance across -40°C to +85°C with guaranteed 150 ppm/°C tempco, supports capacitive loads up to 100 µF without oscillation, and exhibits only 2.5 mV max ΔVk over 1–12 mA Ik range-making it suitable for closed-loop regulation where load transients demand predictable reference behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V typical; ±1% initial accuracy at 25°C ensures tight feedback setpoint in precision power supplies. |
| Operating Current Range | 65 µA min to 12 mA max; enables ultra-low-power sensor biasing and high-current reference buffering. |
| Tempco | 150 ppm/°C max; limits drift to ±12.3 mV over full industrial temperature range (-40°C to +85°C). |
| Static Impedance | 0.25–0.5 Ω; minimizes output voltage shift under dynamic load changes in ADC reference or DAC bias applications. |
| Noise Density | 200 nV/√Hz (10 Hz–10 kHz); preserves signal integrity in high-resolution measurement front-ends. |
| Long-Term Stability | 120 ppm after 1000 hrs; reduces calibration drift in portable test equipment requiring multi-year accuracy retention. |
Pinout & Package
SOT23-3 plastic micropackage (JEDEC TO-236AB), 2.9 mm × 2.64 mm × 1.12 mm body, lead-free ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground return path | Must be connected to system ground with low-impedance trace; serves as common node for cathode current sink. |
| Cathode (Pin 2) | Output voltage terminal | Delivers regulated 1.225 V; connects to feedback node of op-amp or error amplifier in shunt-regulated topologies. |
| No Connect (Pin 3) | Unused internal terminal | Internally unconnected; left floating per datasheet-no external connection required or recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 65 µA max at 25°C enables >10-year battery life in coin-cell–powered IoT sensors. |
| Capacitive load stability | Stable with 0–100 µF output capacitance-eliminates need for isolation resistors in noisy SMPS environments. |
| Precision grade option | ±1% initial tolerance (TS4041D) targets mid-tier cost/performance balance for industrial control systems. |
| Robust ESD rating | 2 kV HBM protection allows safe handling during manual assembly and rework without special precautions. |
Applications
| Battery-Powered Instrumentation | Switch-Mode Power Supply Feedback |
|---|---|
Use Scenario: Portable multimeter measuring 0–200 mV DC signals with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Provides stable 1.225 V reference for ADC internal gain stage and external signal conditioning. Use Value: ±1% accuracy and 200 nV/√Hz noise ensure <0.01% measurement error and sub-LSB noise floor at 100 kSPS. | Use Scenario: 12 V input, 3.3 V output buck converter with optocoupler-isolated feedback. IC Role / Device Role / Timing Role: Shunt reference on secondary side generating precise 1.225 V for TL431-compatible error amplifier input. Use Value: 150 ppm/°C tempco maintains ±1.5% output regulation across ambient temperature swings in telecom power modules. |
| USB-C Battery Charger Controller | Industrial Sensor Signal Conditioning |
Use Scenario: USB PD 3.0 charger IC regulating 5–20 V output using programmable voltage divider. IC Role / Device Role / Timing Role: Precision shunt reference setting lower divider node for adjustable output voltage feedback. Use Value: 65 µA operating current minimizes standby loss while enabling fast transient response via low Rka (0.5 Ω). | Use Scenario: 4–20 mA loop-powered pressure transmitter with onboard RTD excitation. IC Role / Device Role / Timing Role: Supplies stable bias voltage to Wheatstone bridge and instrumentation amplifier stages. Use Value: Long-term stability (120 ppm/1000 hrs) prevents zero-drift accumulation in unattended field deployments. |
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 µA min cathode current; 90 ppm/°C tempco; SO-8 package | Requires external resistor divider for 1.225 V derivation; larger footprint; higher minimum current | Select when higher output voltage flexibility or lower tempco is prioritized over size and ultra-low Iq. |
| MAX6008AEUR+T | 1.25 V output; ±0.2% initial accuracy; 75 ppm/°C tempco; SOT23-3 package; 35 µA max Iq | Higher precision and lower tempco but fixed 1.25 V output; not pin-for-pin compatible due to different pin 3 function | Select when tighter accuracy and lower drift are critical, and 25 mV offset from 1.225 V is acceptable in system gain calibration. |
Compared with TLVH431AIDBZR and MAX6008AEUR+T, the TS4041DILT-1.2 uniquely balances 1.225 V exact output, SOT23-3 footprint, 65 µA ultra-low Iq, and ±1% tolerance-making it optimal for space- and power-constrained shunt reference roles where 1.225 V is specified in the feedback network.
Availability
TS4041DILT-1.2 is available at Aetrix Electronics and suitable for battery-operated equipment, switch mode power supplies, and instrumentation requiring stable component supply with consistent parametric performance across production lots.
Supply support for TS4041DILT-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 product line, engineered specifically for low-power, high-stability shunt reference applications in portable and thermally variable environments.
FAQ
What is the minimum cathode current required for regulation at -40°C?
The TS4041DILT-1.2 requires ≥70 µA cathode current across -40°C to +85°C to maintain regulation within specification. At -40°C, this exceeds the 25°C minimum of 65 µA to ensure stable 1.225 V output under cold-start conditions in battery-powered devices.
Can TS4041DILT-1.2 drive a 100 µF ceramic capacitor directly?
Yes-the TS4041DILT-1.2 is explicitly characterized for stability with 0–100 µF capacitive loads, including ceramic types. No series isolation resistor is needed, simplifying layout in noisy SMPS feedback paths where bulk capacitance improves ripple rejection.
How does the 150 ppm/°C temperature coefficient translate to voltage drift over temperature?
Over the full -40°C to +85°C range (125°C span), 150 ppm/°C yields maximum drift of 125 × 150 = 18,750 ppm, or ±18.75 mV from 1.225 V-equivalent to ±1.53% full-scale deviation, well within the ±1% initial tolerance band when combined with thermal hysteresis.
Is Pin 3 (NC) electrically isolated or internally bonded?
Pin 3 is a no-connect terminal with no internal bond wire or silicon connection. The datasheet specifies it must remain unconnected-soldering or grounding Pin 3 may cause parametric shifts or device malfunction due to unintended parasitic coupling in the SOT23-3 die attach structure.
TS4041DILT-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:
- 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:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TS4041DILT-1.2 FAQ
1.How can I place an order for TS4041DILT-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TS4041DILT-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 TS4041DILT-1.2 reliable?
The price and inventory of TS4041DILT-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 TS4041DILT-1.2 is usually 5 days.
3.What payment methods are accepted for TS4041DILT-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS4041DILT-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS4041DILT-1.2?
TS4041DILT-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS4041DILT-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 TS4041DILT-1.2?
For technical support, including TS4041DILT-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS4041DILT-1.2 requirements.
6.How does Aetrix verify that TS4041DILT-1.2 is sourced from the original manufacturer or authorized distributors?
All TS4041DILT-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 TS4041DILT-1.2 meets industry standards.
7.What is the process for return or replacement of TS4041DILT-1.2?
All TS4041DILT-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with TS4041DILT-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 TS4041DILT-1.2 part is unused and in its original packaging.
Return procedure for TS4041DILT-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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