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Renesas ISL21080CIH341Z-TK
- Part No.:
- ISL21080CIH341Z-TK
- Manufacturer:
- Renesas
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL21080CIH341Z-TK.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,819
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Product details
Overview
ISL21080CIH341Z-TK from Renesas (formerly Intersil) is a 4.096V ultra-low-power precision voltage reference IC with ±0.2% initial accuracy, 50ppm/°C temperature coefficient, and 1.5µA maximum supply current. It operates from 4.5V to 8.0V input and delivers ±7mA output current, serving as a stable reference for ADCs, DACs, and low-power standby rails in battery-constrained systems.
For engineers reviewing the ISL21080CIH341Z-TK datasheet, ISL21080CIH341Z-TK pinout, ISL21080CIH341Z-TK application, or ISL21080CIH341Z-TK equivalent, key selection criteria include its 4.096V output optimized for 12-bit ADC full-scale matching, nanoscale supply current enabling multi-year battery life, and SOT-23-3 package compatibility with space-constrained sensor nodes and portable instrumentation.
Technical Context
The ISL21080CIH341Z-TK employs floating-gate analog (FGA) technology to achieve high initial accuracy without bandgap or Zener-based voltage generation, enabling programmable output voltages across the family. Its buffered output stage supports bidirectional ±7mA load current while maintaining 30µVP-P (0.1Hz–10Hz) noise performance.
Designed for operation over –40°C to +85°C, it features 50ppm/°C tempco measured via box method across the full temperature range, 80–350µV/V line regulation over 4.5V–8.0V input, and 10–100µV/mA load regulation-critical for precision data acquisition in varying supply and load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V - Matches 12-bit ADC full-scale range (212 = 4096) for zero-code offset calibration. |
| Initial Accuracy | ±0.2% at +25°C - Ensures ≤8.2mV absolute error before system calibration. |
| Tempco | 50ppm/°C - Drift ≤±0.512mV over –40°C to +85°C ambient range. |
| Supply Current | 1.5µA max - Enables >10-year battery life in 10µA-systems with coin-cell power. |
| Input Voltage Range | 4.5V to 8.0V - Supports direct connection to Li-ion (4.2V fully charged) with headroom for dropout. |
| Output Noise | 30µVP-P (0.1Hz–10Hz) - Minimizes quantization uncertainty in high-resolution SAR ADC references. |
| Operating Temp | –40°C to +85°C - Qualified for industrial and outdoor wireless sensor node deployment. |
Pinout & Package
Package: 3-lead SOT-23 (RoHS-compliant, Pb-free, P3.064A footprint).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Positive supply input | Accepts 4.5V–8.0V; must be decoupled locally to suppress PSRR degradation above 100Hz. |
| 2 (VOUT) | Precision reference output | Provides 4.096V ±0.2%; capable of sourcing/sinking ±7mA with <100µV/mA load regulation. |
| 3 (GND) | Analog ground reference | Must connect to clean, low-impedance analog ground plane; separate from digital return paths. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-gate architecture | Eliminates traditional bandgap/Zener limitations, enabling 4.096V output without trimming resistors or laser adjustment. |
| Ultra-low quiescent current | 1.5µA max enables energy harvesting systems to operate continuously on µW-level harvested power. |
| Low-frequency noise | 30µVP-P (0.1Hz–10Hz) ensures stable reference for precision weigh-scale and medical sensor front-ends. |
| Wide input range | 4.5V–8.0V accommodates aging Li-ion batteries and unregulated DC-DC outputs without external LDO. |
| Robust ESD rating | 5kV HBM allows safe handling during manual assembly and board rework without special precautions. |
Applications
| Wireless Sensor Node Reference | Portable Medical Instrumentation |
|---|---|
Use Scenario: Battery-powered soil moisture sensor transmitting data every 15 minutes via LoRaWAN. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for 12-bit ADC measuring capacitive probe output. Use Value: 1.5µA supply current extends CR2032 battery life beyond 5 years; ±0.2% accuracy maintains <0.5% measurement uncertainty across temperature. | Use Scenario: Handheld pulse oximeter with dual-wavelength photodiode signal conditioning. IC Role / Device Role / Timing Role: Supplies reference voltage for transimpedance amplifier gain-setting and ADC conversion. Use Value: 30µVP-P low-frequency noise prevents baseline drift in SpO₂ calculation; SOT-23-3 footprint saves PCB area in compact enclosure. |
| Energy Harvesting System Monitor | Industrial IoT Edge Controller |
Use Scenario: Solar-powered environmental monitor using supercapacitor storage and buck converter regulation. IC Role / Device Role / Timing Role: Reference for coulomb counter and battery health monitoring circuitry. Use Value: 4.5V–8.0V input range accepts variable solar panel output directly; 50ppm/°C tempco ensures consistent SoC estimation across outdoor thermal cycles. | Use Scenario: DIN-rail mounted PLC module acquiring analog inputs from pressure and flow sensors. IC Role / Device Role / Timing Role: Precision reference for isolated 16-bit sigma-delta ADC subsystem. Use Value: ±7mA output drive supports multiple parallel ADC references; –40°C to +85°C rating guarantees operation in unconditioned control cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6029AEUR+T | 4.096V output, ±0.1% initial accuracy, but 3.5µA typical supply current (2.3× higher than ISL21080CIH341Z-TK). | Higher power draw limits use in multi-year battery applications; better accuracy suits metrology-grade calibrators. | Select when tighter initial tolerance outweighs battery life requirements. |
| ADR3440ARJZ-R7 | 4.096V output, ±0.1% accuracy, 12ppm/°C tempco, but requires ≥4.5V input and draws 120µA supply current (80× higher). | Superior tempco benefits wide-temperature industrial logging; excessive current disqualifies for energy harvesting. | Choose for high-stability lab equipment where power is not constrained. |
Compared with MAX6029AEUR+T and ADR3440ARJZ-R7, the ISL21080CIH341Z-TK uniquely balances ultra-low 1.5µA supply current with ±0.2% accuracy and 4.096V output-making it optimal for long-life, size-constrained, 12-bit data acquisition where moderate tempco is acceptable.
Availability
ISL21080CIH341Z-TK is available at Aetrix Electronics and suitable for wireless sensor networks, portable medical devices, and energy harvesting systems requiring stable component supply with guaranteed long-term availability.
Supply support for ISL21080CIH341Z-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-operated and energy-harvesting systems, leveraging floating-gate technology to eliminate trimming and reduce supply current to nanoamp levels.
FAQ
What is the input voltage range for the ISL21080CIH341Z-TK?
The ISL21080CIH341Z-TK operates with an input voltage range of 4.5V to 8.0V, as specified in the Electrical Specifications table on page 7 of FN6934 Rev.7.00. This range accommodates fully charged Li-ion batteries and unregulated DC-DC outputs while ensuring stable 4.096V reference output. Operation below 4.5V may cause dropout or loss of regulation.
Does the ISL21080CIH341Z-TK support bidirectional output current?
Yes, the ISL21080CIH341Z-TK supports ±7mA output current, meaning it can both source and sink up to 7mA. This capability is confirmed in the Features section (page 1) and Electrical Specifications tables (pages 4–8), enabling use in active biasing circuits, compensation networks, and loads requiring sink capability such as certain DAC reference configurations.
How does X-ray inspection affect the ISL21080CIH341Z-TK?
X-ray inspection can cause permanent output voltage shift in the ISL21080CIH341Z-TK due to its floating-gate technology. As noted in the Special Note (page 1) and Applications Information (page 15), exposure should be minimized or avoided; shifts of 10mV or more may occur under extreme radiation. If required, zinc shielding or copper plane layers are recommended to mitigate dose impact.
What is the typical output voltage noise of the ISL21080CIH341Z-TK?
The ISL21080CIH341Z-TK has a typical output voltage noise of 30µVP-P over the 0.1Hz to 10Hz bandwidth, as stated in the Features section (page 1) and confirmed in the Electrical Specifications for ISL21080-41 (page 7). This low 1/f noise supports high-resolution measurements in precision instrumentation and sensor signal chains.
Is the ISL21080CIH341Z-TK RoHS compliant and what package does it use?
Yes, the ISL21080CIH341Z-TK is RoHS compliant and uses a Pb-free 3-lead SOT-23 package (drawing P3.064A), as documented in the Ordering Information table (page 2) and Absolute Maximum Ratings section (page 3). The device features 100% matte tin plate termination and meets IPC/JEDEC J-STD-020 reflow standards for lead-free assembly.
ISL21080CIH341Z-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:
- Not For New Designs
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 7 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 30µVp-p
- Noise - 10Hz to 10kHz:
- 52µVrms
- Voltage - Input:
- 4.5V ~ 8V
- 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
ISL21080CIH341Z-TK FAQ
1.How can I place an order for ISL21080CIH341Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL21080CIH341Z-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 ISL21080CIH341Z-TK reliable?
The price and inventory of ISL21080CIH341Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL21080CIH341Z-TK is usually 5 days.
3.What payment methods are accepted for ISL21080CIH341Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL21080CIH341Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL21080CIH341Z-TK?
ISL21080CIH341Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL21080CIH341Z-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 ISL21080CIH341Z-TK?
For technical support, including ISL21080CIH341Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL21080CIH341Z-TK requirements.
6.How does Aetrix verify that ISL21080CIH341Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL21080CIH341Z-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 ISL21080CIH341Z-TK meets industry standards.
7.What is the process for return or replacement of ISL21080CIH341Z-TK?
All ISL21080CIH341Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL21080CIH341Z-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 ISL21080CIH341Z-TK part is unused and in its original packaging.
Return procedure for ISL21080CIH341Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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