My Inquiry
My Account
Renesas ISL21009BFB825Z-T7A
- Part No.:
- ISL21009BFB825Z-T7A
- Manufacturer:
- Renesas
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL21009BFB825Z-T7A.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,585
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL21009BFB825Z-T7A from Intersil is a high-voltage-input, precision, low-noise voltage reference IC delivering 2.500V output with ±0.5mV initial accuracy, 3ppm/°C temperature coefficient, and 4.5µVP-P (0.1Hz–10Hz) output noise. It operates from 3.5V to 16.5V input, draws ≤180µA supply current, and supports ±7.0mA output drive - enabling high-resolution ADC/DAC biasing in portable instrumentation and battery-powered data acquisition systems.
For engineers reviewing the ISL21009BFB825Z-T7A datasheet, ISL21009BFB825Z-T7A pinout, ISL21009BFB825Z-T7A application, or ISL21009BFB825Z-T7A equivalent, this page provides verified electrical specifications, SOIC-8 terminal mapping, FGA™ technology context, real-world load/line transient behavior, and validated alternatives for precision analog signal chains requiring sub-10ppm stability and micropower operation.
Technical Context
The ISL21009BFB825Z-T7A employs Intersil's proprietary Floating Gate Analog (FGA™) technology, where charge is precisely programmed onto a floating gate during manufacturing to establish the reference voltage - eliminating reliance on bandgap or Zener mechanisms. This enables programmable output voltages (1.25V–5.0V) with inherently low drift and near-zero aging-related supply current shift.
Its buffered output stage delivers 2.500V with 100µs turn-on settling (±0.1%), 60dB ripple rejection at 10kHz, and load regulation of 10–100µV/mA across ±7mA sourcing/sinking. Thermal hysteresis is limited to 50ppm over -40°C to +125°C cycling, and long-term stability is 50ppm after 1000 hours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.5mV at +25°C - ensures full-scale alignment for 12-bit+ SAR ADCs without calibration. |
| Tempco | 3ppm/°C - contributes ≤0.41mV error over -40°C to +125°C, critical for industrial sensor front-ends. |
| Noise (0.1–10Hz) | 4.5µVP-P - enables <16-bit ENOB in precision data loggers with minimal post-processing filtering. |
| Supply Current | ≤180µA max - supports >10-year battery life in wireless sensor nodes using coin-cell power. |
| Input Range | 3.5V to 16.5V - accommodates wide-input DC-DC outputs and unregulated battery rails (e.g., 3×Li-ion). |
| Output Drive | ±7.0mA - directly drives ADC reference inputs, op-amp gain-setting networks, and DAC VREF pins. |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive modules and industrial PLC I/O conditioning. |
Pinout & Package
8-lead SOIC package (M8.15, Pb-free, RoHS compliant), 3.8mm × 4.9mm body, 1.27mm pitch. Thermal resistance θJA = 115°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND or NC | Ground connection or no-connect - tie to system ground if used; leave floating if unused. |
| 2 | VIN | Main power input - accepts 3.5V–16.5V; decouple with ≥0.1µF ceramic near pin. |
| 4 | GND | Dedicated ground return - connect to low-impedance analog ground plane. |
| 5 | TRIM or NC | High-impedance trim node - adjust output ±2.5% with external potentiometer; leave open for nominal 2.500V. |
| 6 | VOUT | Stable 2.500V reference output - buffer capable of ±7mA; avoid >1µF direct capacitive loading. |
| 3, 7, 8 | DNC | Do Not Connect - internal die connections; must remain electrically floating per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| FGA™ Floating-Gate Core | Enables 3ppm/°C tempco and ±0.5mV initial accuracy without laser trimming or post-package adjustment. |
| Ultra-Low 0.1–10Hz Noise | 4.5µVP-P supports high-resolution metrology applications where 1/f noise dominates measurement uncertainty. |
| Micropower Operation | 95µA typical supply current allows integration into energy-harvesting sensor nodes with µW-level budgets. |
| Wide Input Voltage Range | 3.5V–16.5V operation eliminates need for pre-regulation in multi-rail industrial systems. |
| Kelvin Sense Support | Separate VOUT and GND pins enable remote sensing to cancel PCB trace IR drop in precision load circuits. |
Applications
| High-Resolution Data Acquisition | Digital Multimeters |
|---|---|
|
Use Scenario: 16-bit sigma-delta ADC in portable environmental sensor node measuring thermocouple or RTD signals. IC Role / Device Role / Timing Role: Primary voltage reference establishing full-scale range for ADC conversion. Use Value: 4.5µVP-P noise and 3ppm/°C tempco ensure <0.005% measurement repeatability across temperature and battery discharge cycles. |
Use Scenario: Benchtop digital multimeter requiring 4½-digit accuracy and auto-ranging capability. IC Role / Device Role / Timing Role: Stable 2.500V reference for dual-slope integrator and comparator thresholds. Use Value: ±0.5mV initial accuracy eliminates factory calibration steps; 180µA supply current reduces self-heating drift. |
| Bar Code Scanner Analog Front-End | Battery Management Monitoring |
|
Use Scenario: Laser diode driver and photodiode amplifier in handheld barcode scanner requiring low-noise signal recovery. IC Role / Device Role / Timing Role: Reference for transimpedance amplifier gain setting and ADC input scaling. Use Value: Low 10Hz–1kHz broadband noise (2.2µVRMS) preserves SNR in high-gain optical signal paths. |
Use Scenario: Cell voltage monitoring in 4S Li-ion battery pack for UAV or medical device. IC Role / Device Role / Timing Role: Precision reference for multiplexed ADC measuring individual cell voltages. Use Value: -40°C to +125°C rating ensures accuracy across flight envelope; 50ppm thermal hysteresis prevents offset drift after thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4525BRZ | 2.500V, ±0.02% initial accuracy (0.5mV), 3ppm/°C, 1.8µVP-P noise (0.1–10Hz), 950µA supply current | Higher noise performance but 5× higher quiescent current - unsuitable for battery-critical designs | Select when ultra-low noise dominates over power budget; requires additional LDO or regulator due to 4.5V min input. |
| REF5025AIDR | 2.500V, ±0.05% initial accuracy (1.25mV), 3ppm/°C, 3.8µVP-P noise, 950µA supply current, 10V max input | Lower initial accuracy than ISL21009BFB825Z-T7A; wider input range not supported | Choose for TI ecosystem compatibility and enhanced PSRR; verify input rail compliance in high-voltage systems (>10V). |
Compared with ADR4525BRZ and REF5025AIDR, the ISL21009BFB825Z-T7A uniquely balances micropower operation (≤180µA), industry-leading 3ppm/°C tempco, and ±0.5mV accuracy in an 8-lead SOIC - making it optimal for space-constrained, battery-operated precision instruments where thermal stability and low self-heating are non-negotiable.
Availability
ISL21009BFB825Z-T7A is available at Aetrix Electronics and suitable for high-resolution data acquisition, portable instrumentation, battery management monitoring, and industrial sensor conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL21009BFB825Z-T7A 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
Intersil Corporation (now part of Renesas Electronics) is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The ISL21009 family was designed specifically for micropower, high-accuracy voltage references in portable test equipment, industrial sensors, and battery-powered data converters - leveraging FGA™ technology to achieve unprecedented initial accuracy and temperature stability without laser trimming.
FAQ
What is the maximum input voltage rating for the ISL21009BFB825Z-T7A?
The absolute maximum voltage from VIN to GND is +18V, but the recommended operating input range is 3.5V to 16.5V. Exceeding 16.5V may degrade long-term stability or accelerate parametric drift. The ISL21009BFB825Z-T7A maintains specified performance only within its rated operating range, and sustained operation above 16.5V voids guaranteed specifications.
Can the ISL21009BFB825Z-T7A drive a 10µF output capacitor directly?
No - the ISL21009BFB825Z-T7A output stage is not optimized for heavy capacitive loads. Direct connection of >1.0µF capacitance risks instability, overshoot, and prolonged settling time. For 10µF buffering, use the RC network shown in Figure 58: 2kΩ series resistor + 10µF capacitor, with 0.01µF in parallel at the output, to maintain stability and reduce noise below 15µVP-P (1Hz–1kHz).
Does the ISL21009BFB825Z-T7A require external trimming to achieve ±0.5mV accuracy?
No - the ISL21009BFB825Z-T7A achieves ±0.5mV initial accuracy at +25°C without external trimming. Its FGA™ floating-gate architecture sets the reference voltage during wafer fabrication. The TRIM pin (Pin 5) is optional and provides ±2.5% adjustment margin only if system-level calibration or board-level drift compensation is needed.
How does X-ray exposure affect the ISL21009BFB825Z-T7A output voltage?
X-ray exposure - especially from checked luggage scanners - can permanently shift the ISL21009BFB825Z-T7A output by 100µV to 1mV due to charge perturbation in the floating gate. Carry-on screening causes negligible shift (<100 passes), but >2 layers of ½-ounce copper ground planes or thin zinc shielding (300µm) are recommended for high-exposure environments to block >90% of incident dose.
What is the turn-on settling time specification for the ISL21009BFB825Z-T7A?
The ISL21009BFB825Z-T7A has a typical turn-on settling time of 100µs to within ±0.1% of final 2.500V output, measured from VIN application. This parameter is critical for power-sequenced systems - ensure timing margins accommodate this delay before enabling downstream ADC conversions or analog signal processing blocks dependent on the reference.
ISL21009BFB825Z-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- FGA™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 7 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 4.5µVp-p
- Noise - 10Hz to 10kHz:
- 22µVrms
- Voltage - Input:
- 3.5V ~ 16.5V
- Current - Supply:
- 180µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISL21009BFB825Z-T7A FAQ
1.How can I place an order for ISL21009BFB825Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL21009BFB825Z-T7A 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 ISL21009BFB825Z-T7A reliable?
The price and inventory of ISL21009BFB825Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL21009BFB825Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL21009BFB825Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL21009BFB825Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL21009BFB825Z-T7A?
ISL21009BFB825Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL21009BFB825Z-T7A 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 ISL21009BFB825Z-T7A?
For technical support, including ISL21009BFB825Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL21009BFB825Z-T7A requirements.
6.How does Aetrix verify that ISL21009BFB825Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL21009BFB825Z-T7A 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 ISL21009BFB825Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL21009BFB825Z-T7A?
All ISL21009BFB825Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL21009BFB825Z-T7A, 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 ISL21009BFB825Z-T7A part is unused and in its original packaging.
Return procedure for ISL21009BFB825Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL21009BFB825Z-T7A Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
