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Renesas ISL21080DIH309Z-TK
- Part No.:
- ISL21080DIH309Z-TK
- Manufacturer:
- Renesas
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL21080DIH309Z-TK.pdf
- Description:
- IC VREF SERIES 0.7% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:12,968
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Product details
Overview
ISL21080DIH309Z-TK from Renesas (formerly Intersil) is a 0.9V, ±0.7% initial accuracy, 50ppm/°C temperature coefficient nano-power voltage reference IC operating from 2.0V to 5.5V supply with 1.5µA max supply current and 30µVP-P (0.1Hz–10Hz) output noise. It delivers precision low-voltage biasing for battery-powered sensor nodes and standby voltage regulation in portable instrumentation.
For engineers reviewing the ISL21080DIH309Z-TK datasheet, ISL21080DIH309Z-TK pinout, ISL21080DIH309Z-TK application, or ISL21080DIH309Z-TK equivalent, key selection criteria include ultra-low quiescent current, tight initial tolerance at 0.9V output, SOT-23-3 package compatibility, and verified performance across -40°C to +85°C industrial temperature range.
Technical Context
The ISL21080DIH309Z-TK employs floating-gate analog (FGA) technology to achieve stable 0.9V reference output without bandgap or Zener constraints, enabling high initial accuracy and near-zero drift over temperature. Its CMOS-based buffer amplifier supports ±7mA output drive while maintaining low noise and load regulation.
Designed for minimal power overhead, it operates down to 2.0V input with only 310nA typical supply current-enabling direct integration into energy-harvesting systems and multi-year battery life applications where traditional references consume excessive current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 0.900V - precisely trimmed for ADC reference, low-voltage comparator thresholds, and sub-1V core biasing |
| Initial Accuracy | ±0.7% at +25°C - ensures system-level calibration stability without post-production trimming |
| Tempco | 50ppm/°C - limits full-range drift to ±6.25mV over -40°C to +85°C, critical for unheated field deployments |
| Supply Current | 1.5µA maximum - enables >10-year battery life in coin-cell-powered wireless sensors |
| Output Noise | 30µVP-P (0.1Hz–10Hz) - supports 16-bit+ resolution in low-frequency measurement circuits |
| Input Voltage Range | 2.0V to 5.5V - compatible with single Li-ion, dual alkaline, or regulated 3.3V/5V rails |
| Operating Temp | -40°C to +85°C - qualified for industrial and outdoor environmental monitoring hardware |
Pinout & Package
Package: 3-lead SOT-23 (RoHS-compliant, Pb-free, P3.064A footprint).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Reference Input Supply | Accepts 2.0–5.5V input; dropout as low as 100mV at light loads enables operation near battery end-of-life |
| VOUT (Pin 2) | Precision Reference Output | 0.9V buffered output capable of sourcing/sinking ±7mA; requires no external capacitor for stability |
| GND (Pin 3) | Analog Ground Reference | Single-point ground connection; separation from digital ground minimizes noise coupling in mixed-signal PCBs |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Gate Architecture | Eliminates traditional bandgap/Zener limitations, enabling programmable 0.9V output with <100ppm thermal hysteresis |
| Nano-Power Operation | 310nA typical supply current allows continuous operation on harvested microwatt energy sources |
| Low-Frequency Noise Performance | 30µVP-P (0.1Hz–10Hz) supports high-resolution delta-sigma ADCs in portable medical devices |
| Robust Load Regulation | ≤100µV/mA sourcing variation ensures stable reference under dynamic sensor biasing conditions |
| Wide Input Range | 2.0V minimum input supports direct connection to aging primary batteries without LDO pre-regulation |
Applications
| Wireless Sensor Node Power Management | Portable Medical Glucose Monitor |
|---|---|
Use Scenario: Ultra-low-power IoT node measuring temperature/humidity with BLE transmission every 5 minutes. IC Role / Device Role / Timing Role: Provides stable 0.9V reference for 16-bit SAR ADC and low-threshold comparator wake-up circuit. Use Value: Enables 12+ year coin-cell lifetime by limiting reference current to 310nA average, reducing total system quiescent draw below 500nA. | Use Scenario: Handheld glucose meter requiring clinical-grade accuracy and single AAA battery operation. IC Role / Device Role / Timing Role: Supplies precision 0.9V reference for electrochemical sensor signal conditioning and ADC conversion. Use Value: ±0.7% initial accuracy and 50ppm/°C tempco ensure <±2mg/dL measurement error across 0–40°C ambient range without recalibration. |
| Energy-Harvesting Environmental Logger | Industrial Battery Monitoring Module |
Use Scenario: Solar-powered soil moisture logger collecting data hourly using piezoelectric vibration harvesting. IC Role / Device Role / Timing Role: Generates 0.9V reference for microcontroller VREF and analog front-end during intermittent wake cycles. Use Value: 2.0V minimum input allows operation directly from supercapacitor storage (2.2V–3.0V), eliminating buck converter losses and extending harvestable energy utilization. | Use Scenario: 4S Li-ion pack monitor in warehouse robotics reporting cell voltage imbalance via CAN bus. IC Role / Device Role / Timing Role: Supplies accurate 0.9V reference for 12-bit delta-sigma ADC measuring individual cell voltages. Use Value: 30µVP-P low-frequency noise ensures <0.1% full-scale error in 3.7V cell measurement, critical for detecting early-stage cell degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6029BESA09+T | 0.9V output, ±0.5% initial accuracy, 75ppm/°C tempco, 3.5µA max supply current, SOT-23-3 | Higher supply current reduces battery life in multi-year deployments; wider tempco increases drift in uncontrolled environments | Select when tighter initial accuracy is prioritized over ultra-low power and long-term stability |
| ADR3409ARJZ-R7 | 0.9V output, ±0.1% initial accuracy, 30ppm/°C tempco, 6µA max supply current, SOT-23-3 | Lower tempco and higher accuracy improve metrology-grade performance but increase quiescent consumption 4× over ISL21080DIH309Z-TK | Select when absolute precision outweighs energy budget constraints, e.g., calibrated test equipment |
Compared with MAX6029BESA09+T and ADR3409ARJZ-R7, the ISL21080DIH309Z-TK delivers the lowest supply current (1.5µA max) for extended battery life, while trading minor initial accuracy (±0.7%) and moderate tempco (50ppm/°C) for unmatched nano-power efficiency in always-on sensing applications.
Availability
ISL21080DIH309Z-TK is available at Aetrix Electronics and suitable for wireless sensor networks, portable medical instrumentation, and energy-harvesting environmental loggers requiring stable component supply with guaranteed long-term availability.
Supply support for ISL21080DIH309Z-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 Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT markets.
The ISL21080 family was designed specifically for ultra-low-power precision reference needs in battery-constrained and energy-harvesting systems, emphasizing nano-ampere operation without sacrificing accuracy or temperature stability.
FAQ
What is the maximum supply current specification for the ISL21080DIH309Z-TK?
The ISL21080DIH309Z-TK has a maximum supply current of 1.5µA across the full -40°C to +85°C operating temperature range, with typical consumption of 310nA at +25°C. This ultra-low quiescent current makes the ISL21080DIH309Z-TK ideal for multi-year battery operation in remote sensing applications where every nanoamp matters.
Does the ISL21080DIH309Z-TK require an output capacitor for stability?
No, the ISL21080DIH309Z-TK is internally compensated and does not require an external output capacitor for stability. The device maintains regulation and low noise performance with or without capacitive loading, simplifying PCB layout and reducing BOM count in space-constrained designs.
What is the input voltage range for the ISL21080DIH309Z-TK?
The ISL21080DIH309Z-TK operates from an input voltage range of 2.0V to 5.5V, enabling direct interface with single-cell Li-ion (2.7–4.2V), dual alkaline (2.0–3.2V), or regulated 3.3V/5V supplies. This wide input range eliminates the need for pre-regulation in many low-power systems.
How does X-ray inspection affect the ISL21080DIH309Z-TK output voltage?
Post-assembly X-ray inspection may cause permanent shifts in the ISL21080DIH309Z-TK output voltage due to its floating-gate architecture; shifts exceeding 10mV have been observed under extreme exposure. Renesas recommends minimizing or avoiding X-ray inspection, and if required, using thin zinc shielding (300µm) to block damaging radiation while preserving imaging quality.
What is the thermal hysteresis specification for the ISL21080DIH309Z-TK?
The ISL21080DIH309Z-TK exhibits ≤100ppm thermal hysteresis after cycling from -40°C to +85°C and back to +25°C. This low hysteresis ensures repeatable reference voltage behavior across repeated temperature excursions, critical for field-deployed instrumentation that experiences diurnal thermal cycles.
ISL21080DIH309Z-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):
- 0.9V
- Voltage - Output (Max):
- -
- Current - Output:
- 7 mA
- Tolerance:
- ±0.7%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 40µVp-p
- Noise - 10Hz to 10kHz:
- 10µVrms
- Voltage - Input:
- 2V ~ 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
ISL21080DIH309Z-TK FAQ
1.How can I place an order for ISL21080DIH309Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL21080DIH309Z-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 ISL21080DIH309Z-TK reliable?
The price and inventory of ISL21080DIH309Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL21080DIH309Z-TK is usually 5 days.
3.What payment methods are accepted for ISL21080DIH309Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL21080DIH309Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL21080DIH309Z-TK?
ISL21080DIH309Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL21080DIH309Z-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 ISL21080DIH309Z-TK?
For technical support, including ISL21080DIH309Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL21080DIH309Z-TK requirements.
6.How does Aetrix verify that ISL21080DIH309Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL21080DIH309Z-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 ISL21080DIH309Z-TK meets industry standards.
7.What is the process for return or replacement of ISL21080DIH309Z-TK?
All ISL21080DIH309Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL21080DIH309Z-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 ISL21080DIH309Z-TK part is unused and in its original packaging.
Return procedure for ISL21080DIH309Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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