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Renesas ISL21080DIH310Z-TK
- Part No.:
- ISL21080DIH310Z-TK
- Manufacturer:
- Renesas
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL21080DIH310Z-TK.pdf
- Description:
- IC VREF SERIES 0.7% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,442
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Product details
Overview
ISL21080DIH310Z-TK from Renesas (formerly Intersil) is a 1.024V ultra-low-power precision voltage reference IC with ±0.7% initial accuracy, 50ppm/°C temperature coefficient, and 1.5µA maximum supply current. It operates from 2.7V to 5.5V input and delivers stable output for ADC/DAC biasing, portable sensor signal conditioning, and low-power standby voltage generation in battery-constrained systems.
For engineers reviewing the ISL21080DIH310Z-TK datasheet, ISL21080DIH310Z-TK pinout, ISL21080DIH310Z-TK application, or ISL21080DIH310Z-TK equivalent, this page provides verified technical context, package mapping, real-world use cases, and validated alternative options for energy harvesting nodes, wireless sensor networks, and wearable medical electronics.
Technical Context
The ISL21080DIH310Z-TK uses floating-gate analog (FGA) technology to achieve near-zero drift and ultra-low quiescent current without bandgap or Zener-based architectures. Its buffered output stage supports ±7mA load current while maintaining 30µVP-P (0.1Hz–10Hz) noise performance.
It features fixed 1.024V output optimized for 10-bit and 12-bit data converters, with line regulation of 80–350µV/V and load regulation of 25–350µV/mA across sourcing/sinking conditions. Thermal hysteresis is limited to 100ppm over +25°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.024V - precisely matches common 10-bit full-scale reference (1024 steps), enabling direct LSB alignment in SAR ADCs without scaling. |
| Initial Accuracy | ±0.7% at +25°C - ensures ≤7.2mV absolute error at 1.024V, sufficient for 9-bit effective resolution before trimming. |
| Tempco | 50ppm/°C - contributes ≤0.64mV drift over –40°C to +85°C range, critical for uncalibrated industrial sensor front-ends. |
| Supply Current | 1.5µA max - enables >10-year battery life in coin-cell-powered IoT sensors drawing 1µA average system current. |
| Output Noise | 30µVP-P (0.1Hz–10Hz) - low enough to avoid degrading ENOB in 12-bit delta-sigma ADCs used in precision instrumentation. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single Li-ion, 3.3V logic rails, and regulated 5V supplies without external LDO. |
| Operating Temp | –40°C to +85°C - qualified for automotive cabin, industrial control, and outdoor environmental monitoring deployments. |
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 2.7–5.5V; dropout voltage is ~100mV at 1mA load, enabling operation directly from 3.3V rail with margin. |
| 2 - VOUT | Precision reference output | Low-impedance buffered source/sink node; requires no external capacitor for stability but benefits from 10nF bypass for PSRR enhancement. |
| 3 - GND | Analog ground reference | Must be connected to clean system AGND plane; separation from digital ground prevents noise coupling into reference path. |
Key Features
| Feature | Design Value |
|---|---|
| NanoPower operation | 1.5µA max supply current enables multi-year operation on CR2032 batteries in always-on sensor nodes. |
| FGA-based stability | Floating-gate architecture eliminates traditional bandgap drift mechanisms, delivering <100ppm thermal hysteresis and 50ppm/°C tempco. |
| 1.024V output | Exact match for 10-bit ADC full-scale range (210 = 1024), eliminating gain calibration in embedded data acquisition systems. |
| Robust load drive | ±7mA output capability supports driving multiple op-amp bias networks or SAR ADC reference inputs without external buffers. |
| X-ray sensitivity warning | Documented output shift under X-ray exposure informs PCB inspection protocol design-shielding or post-inspection verification required. |
Applications
| Energy Harvesting Node | Wireless Sensor Transmitter |
|---|---|
Use Scenario: Powering ultra-low-power microcontroller and analog front-end from thermoelectric or piezoelectric harvesters delivering <10µA average current. IC Role / Device Role / Timing Role: Provides stable 1.024V reference for ADC measuring harvested voltage/current and internal temperature sensor. Use Value: 1.5µA quiescent current ensures >95% of harvested energy reaches the system load; ±0.7% accuracy maintains measurement integrity without software correction. | Use Scenario: Battery-operated soil moisture sensor transmitting readings via sub-GHz RF every 15 minutes. IC Role / Device Role / Timing Role: Supplies reference voltage to 12-bit ADC digitizing capacitive moisture probe output and to RF transceiver's internal DAC for PA bias control. Use Value: 30µVP-P low-frequency noise prevents baseline drift in moisture readings; 50ppm/°C tempco avoids seasonal calibration in agricultural deployments. |
| Wearable Medical Patch | Portable Gas Detector |
Use Scenario: Continuous ECG monitoring patch powered by thin-film battery with 3-year shelf life. IC Role / Device Role / Timing Role: Reference for instrumentation amplifier gain-setting and ADC conversion of filtered biopotential signals. Use Value: Low 1.5µA supply current extends usable battery life beyond device shelf life; RoHS-compliant SOT-23 enables compact flex PCB layout. | Use Scenario: Handheld CO detector using electrochemical cell with analog signal chain and LCD display. IC Role / Device Role / Timing Role: Precision reference for transimpedance amplifier feedback and 10-bit ADC digitizing cell current output. Use Value: 1.024V output aligns directly with 10-bit ADC code boundaries, simplifying firmware scaling; ±0.7% accuracy meets ISO 13485 calibration traceability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6029BESA10+T | 1.000V output, ±0.5% initial accuracy, 75ppm/°C tempco, 3.5µA max IQ | Lower accuracy but tighter tempco; higher supply current limits battery life in multi-year deployments | Select when 1.000V output is preferred for legacy 10-bit designs and higher power budget allows |
| ADR3410ARJZ-R7 | 1.000V output, ±0.1% initial accuracy, 30ppm/°C tempco, 120µA max IQ | Higher precision and lower tempco, but 80× higher supply current precludes energy harvesting use | Select only for mains-powered instrumentation requiring highest accuracy, not for portable or battery-critical systems |
Compared with MAX6029BESA10+T and ADR3410ARJZ-R7, the ISL21080DIH310Z-TK uniquely balances nano-power consumption (1.5µA), 1.024V output alignment, and ±0.7% accuracy-making it the only viable option for 10-bit ADC reference in multi-year battery or energy-harvesting applications.
Availability
ISL21080DIH310Z-TK is available at Aetrix Electronics and suitable for energy harvesting nodes, wireless sensor transmitters, and wearable medical patches requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for ISL21080DIH310Z-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, leveraging floating-gate analog technology to eliminate traditional trade-offs between accuracy, stability, and quiescent current.
FAQ
What is the exact output voltage tolerance of the ISL21080DIH310Z-TK at room temperature?
The ISL21080DIH310Z-TK has a guaranteed initial accuracy of ±0.7% at +25°C, corresponding to ±7.2mV absolute tolerance around its nominal 1.024V output. This specification is 100% tested during production and applies across the full operating temperature range of –40°C to +85°C per the FN6934 Rev.7.00 datasheet.
Can the ISL21080DIH310Z-TK drive a 10kΩ load while maintaining accuracy?
Yes-the ISL21080DIH310Z-TK supports ±7mA output current, meaning it can easily drive a 10kΩ load drawing only 102.4µA at 1.024V. Load regulation is specified at 25–100µV/mA for sourcing, so total error due to load will be ≤2.6mV, well within the ±7.2mV initial accuracy window.
Is the ISL21080DIH310Z-TK compatible with standard SOT-23 reflow profiles?
Yes-it is RoHS-compliant and qualified for Pb-free reflow per J-STD-020. However, post-reflow voltage shift of 100µV–1mV may occur on FR4 boards; designers should account for this in final calibration or select tighter initial accuracy variants if uncalibrated operation is required.
Does the ISL21080DIH310Z-TK require an output capacitor for stability?
No external capacitor is required for stability-the ISL21080DIH310Z-TK is internally compensated and remains stable with capacitive loads up to at least 1nF. A 10nF ceramic capacitor is recommended at the VOUT pin to improve PSRR above 1kHz, as shown in Figure 27 of the datasheet.
How does X-ray inspection affect the ISL21080DIH310Z-TK, and what mitigation is recommended?
X-ray inspection can cause permanent output voltage shift (>10mV under extreme exposure). The ISL21080DIH310Z-TK datasheet explicitly advises minimizing or avoiding X-ray inspection. If unavoidable, use zinc shielding (300µm) or dual copper layers (>90% dose reduction) and perform post-inspection VOUT verification.
ISL21080DIH310Z-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):
- 1.024V
- Voltage - Output (Max):
- -
- Current - Output:
- 7 mA
- Tolerance:
- ±0.7%
- 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
ISL21080DIH310Z-TK FAQ
1.How can I place an order for ISL21080DIH310Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL21080DIH310Z-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 ISL21080DIH310Z-TK reliable?
The price and inventory of ISL21080DIH310Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL21080DIH310Z-TK is usually 5 days.
3.What payment methods are accepted for ISL21080DIH310Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL21080DIH310Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL21080DIH310Z-TK?
ISL21080DIH310Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL21080DIH310Z-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 ISL21080DIH310Z-TK?
For technical support, including ISL21080DIH310Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL21080DIH310Z-TK requirements.
6.How does Aetrix verify that ISL21080DIH310Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL21080DIH310Z-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 ISL21080DIH310Z-TK meets industry standards.
7.What is the process for return or replacement of ISL21080DIH310Z-TK?
All ISL21080DIH310Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL21080DIH310Z-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 ISL21080DIH310Z-TK part is unused and in its original packaging.
Return procedure for ISL21080DIH310Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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