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Renesas ISL21080DIH312Z-TK
- Part No.:
- ISL21080DIH312Z-TK
- Manufacturer:
- Renesas
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL21080DIH312Z-TK.pdf
- Description:
- IC VREF SERIES 0.6% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,311
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Product details
Overview
ISL21080DIH312Z-TK from Renesas Electronics is a 1.25V, ±0.6% initial accuracy, 50ppm/°C temperature coefficient nano-power voltage reference IC operating from 2.7V to 5.5V supply with 1.5µA maximum supply current and 30µVP-P (0.1Hz–10Hz) output noise. It delivers precision biasing for low-power ADCs, battery monitors, and standby rails in portable instrumentation and energy harvesting systems.
For engineers reviewing the ISL21080DIH312Z-TK datasheet, ISL21080DIH312Z-TK pinout, ISL21080DIH312Z-TK application, or ISL21080DIH312Z-TK equivalent, key selection criteria include ultra-low quiescent current, guaranteed tempco over –40°C to +85°C, SOT-23 package compatibility, and floating-gate-based long-term stability without bandgap or Zener limitations.
Technical Context
The ISL21080DIH312Z-TK uses floating-gate analog technology to achieve stable 1.25V output without traditional bandgap or Zener structures-enabling programmable voltage options and near-zero supply current drift. Its buffered output stage supports ±7mA sourcing/sinking while maintaining load regulation of ≤100µV/mA (sourcing) and ≤350µV/mA (sinking).
It operates across –40°C to +85°C with thermal hysteresis of 100ppm and long-term stability of 50ppm at +25°C. Ripple rejection is –40dB at 120Hz, and turn-on settling time is 4ms to ±0.1% with no load-optimized for intermittent power modes in battery-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.25V - precise, factory-trimmed reference for ADC/DAC biasing and voltage monitoring |
| Initial Accuracy | ±0.6% at +25°C - ensures system-level calibration tolerance without post-production trimming |
| Tempco | 50ppm/°C - predictable drift over full industrial temperature range (–40°C to +85°C) |
| Supply Current | 1.5µA max - enables multi-year operation from coin-cell batteries in wireless sensors |
| Output Noise | 30µVP-P (0.1Hz–10Hz) - low flicker noise critical for high-resolution 16-bit+ data acquisition |
| Input Voltage Range | 2.7V to 5.5V - compatible with single Li-ion, 3.3V logic rails, and regulated DC-DC outputs |
| Output Current | ±7mA - sufficient to drive SAR ADC references, op-amp inputs, and small logic loads |
Pinout & Package
Package: 3-lead SOT-23 (RoHS-compliant, Pb-free, pkg drawing P3.064A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input Voltage Connection | Accepts 2.7V–5.5V supply; dropout headroom as low as 1.45V at 7mA load |
| VOUT (Pin 2) | Voltage Reference Output | Stable 1.25V source with 30µVP-P low-frequency noise and ±7mA drive capability |
| GND (Pin 3) | Ground Reference | Common return path; requires low-impedance PCB connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Floating-gate architecture | Eliminates bandgap/Zener dependencies-enables wide VOUT range (0.9V–5.0V) and <1µA typical IQ |
| Ultra-low noise | 30µVP-P (0.1Hz–10Hz) supports 16-bit+ precision measurement without external filtering |
| Industrial temperature range | Specified performance from –40°C to +85°C-suitable for outdoor sensor nodes and medical wearables |
| Load regulation | ≤100µV/mA (sourcing) - maintains accuracy under dynamic load changes in control-loop feedback paths |
| Ripple rejection | –40dB at 120Hz - suppresses switching regulator noise in mixed-signal power domains |
Applications
| Energy Harvesting Sensor Node | Battery Management System |
|---|---|
Use Scenario: Self-powered environmental sensor collecting temperature/humidity data using piezoelectric or solar harvester. IC Role / Device Role / Timing Role: Provides stable 1.25V reference for ultra-low-power SAR ADC and microcontroller VREF input. Use Value: 1.5µA max supply current extends usable runtime per harvested µJ; ±0.6% accuracy ensures calibrated sensor output without firmware correction. | Use Scenario: Single-cell Li-ion pack monitor in portable medical device with fuel gauging and overvoltage protection. IC Role / Device Role / Timing Role: Supplies precision reference for battery voltage sensing amplifier and comparator thresholds. Use Value: 50ppm/°C tempco prevents thermal drift-induced false shutdowns; SOT-23 footprint minimizes PCB area in space-constrained wearable designs. |
| Portable Instrumentation | Low-Power FPGA Standby Rail |
Use Scenario: Handheld multimeter with auto-ranging and 16-bit ADC requiring stable scaling reference. IC Role / Device Role / Timing Role: Delivers 1.25V reference to ADC driver and internal DAC for offset calibration. Use Value: 30µVP-P low-frequency noise avoids resolution loss in DC-coupled measurements; RoHS-compliant packaging meets medical regulatory requirements. | Use Scenario: FPGA configuration memory retention during deep-sleep mode in IoT edge node. IC Role / Device Role / Timing Role: Generates clean 1.25V standby voltage for FPGA configuration SRAM and I/O banks. Use Value: 2.7V min input allows direct connection to buck converter's 3.3V rail; ±7mA output sustains leakage currents without droop during wake-up transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6025AEUR+T | 1.25V, ±0.2% initial accuracy, 20ppm/°C, 35µA max IQ, SOT-23-3 | Higher accuracy and lower tempco, but 23× higher supply current limits battery life | Select when absolute precision outweighs power budget constraints |
| ADR3412ARJZ-R7 | 1.2V, ±0.1% initial accuracy, 10ppm/°C, 120µA max IQ, SOT-23-3 | Superior stability and noise (8µVP-P), but incompatible VOUT and 80× higher IQ | Choose only if system can tolerate 1.2V reference and has >100µA supply margin |
Compared with MAX6025AEUR+T and ADR3412ARJZ-R7, the ISL21080DIH312Z-TK trades minor initial accuracy (±0.6% vs ±0.2%/±0.1%) for dramatic quiescent current reduction (1.5µA vs 35µA/120µA), making it uniquely suitable for multi-year battery operation where µA-level leakage dominates lifetime.
Availability
ISL21080DIH312Z-TK is available at Aetrix Electronics and suitable for energy harvesting, portable instrumentation, and battery management systems requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for ISL21080DIH312Z-TK 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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog power, and connectivity solutions for automotive, industrial, and IoT markets.
The ISL21080 family was designed specifically for ultra-low-power precision reference needs in battery-operated and energy-harvesting systems-leveraging floating-gate technology to eliminate trade-offs between accuracy, stability, and quiescent current.
FAQ
What is the maximum supply current specification for ISL21080DIH312Z-TK?
The ISL21080DIH312Z-TK has a maximum supply current of 1.5µA across the full operating temperature range (–40°C to +85°C), with typical consumption as low as 310nA at +25°C. This ultra-low IQ enables multi-year operation from primary lithium cells and is critical for energy harvesting applications where every nanoamp affects system viability. The 1.5µA limit is production-tested and guaranteed.
Does ISL21080DIH312Z-TK support bidirectional output current?
Yes, the ISL21080DIH312Z-TK supports ±7mA output current-capable of both sourcing and sinking. This allows it to actively drive capacitive loads, compensate for op-amp input bias currents, and maintain regulation during transient load steps in feedback networks. Load regulation remains ≤100µV/mA when sourcing and ≤350µV/mA when sinking, ensuring stability in dynamic configurations.
What is the input voltage range for ISL21080DIH312Z-TK?
The ISL21080DIH312Z-TK operates with an input voltage range of 2.7V to 5.5V. This range accommodates common single-cell Li-ion (3.0–4.2V), regulated 3.3V logic rails, and 5V USB-powered subsystems. Dropout voltage is approximately 1.45V at 7mA load, meaning minimum VIN is ~2.7V-matching its lower bound specification and enabling use with low-headroom regulators.
How does X-ray inspection affect ISL21080DIH312Z-TK performance?
Post-assembly X-ray inspection may cause permanent shifts in the ISL21080DIH312Z-TK output voltage due to floating-gate charge perturbation-shifts of 10mV or more are possible under extreme exposure. Renesas explicitly recommends minimizing or avoiding X-ray inspection. If required, verify output voltage post-inspection; for high-volume production, consider thin zinc shielding (300µm) to block damaging radiation while preserving imaging fidelity.
What is the temperature coefficient specification for ISL21080DIH312Z-TK?
The ISL21080DIH312Z-TK has a guaranteed temperature coefficient of 50ppm/°C over –40°C to +85°C, measured using the box method (ΔVOUT/ΔT across full range). This value is production-tested and ensures predictable, linear drift behavior-critical for applications like portable instrumentation and battery monitoring where ambient temperature varies widely and calibration must remain valid across seasons or operating environments.
ISL21080DIH312Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- FGA™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 7 mA
- Tolerance:
- ±0.6%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 30µVp-p
- Noise - 10Hz to 10kHz:
- 52µVrms
- Voltage - Input:
- 2.7V ~ 5.5V
- Current - Supply:
- 1.5µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ISL21080DIH312Z-TK FAQ
1.How can I place an order for ISL21080DIH312Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL21080DIH312Z-TK 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 ISL21080DIH312Z-TK reliable?
The price and inventory of ISL21080DIH312Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL21080DIH312Z-TK is usually 5 days.
3.What payment methods are accepted for ISL21080DIH312Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL21080DIH312Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL21080DIH312Z-TK?
ISL21080DIH312Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL21080DIH312Z-TK 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 ISL21080DIH312Z-TK?
For technical support, including ISL21080DIH312Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL21080DIH312Z-TK requirements.
6.How does Aetrix verify that ISL21080DIH312Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL21080DIH312Z-TK 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 ISL21080DIH312Z-TK meets industry standards.
7.What is the process for return or replacement of ISL21080DIH312Z-TK?
All ISL21080DIH312Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL21080DIH312Z-TK, 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 ISL21080DIH312Z-TK part is unused and in its original packaging.
Return procedure for ISL21080DIH312Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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