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Renesas ISL28208FBZ
- Part No.:
- ISL28208FBZ
- Manufacturer:
- Renesas
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL28208FBZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:605
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Product details
Overview
ISL28208FBZ from Intersil is a dual-channel precision operational amplifier optimized for single-supply operation, featuring rail-to-rail output swing, input common-mode range extending 0.5V below V−, and ±15µV typical input offset voltage at +25°C. It operates from 3V to 40V total supply, consumes only 165µA per amplifier at ±5V, and delivers 1.2MHz gain-bandwidth with 15.8nV/√Hz voltage noise-ideal for high-accuracy current sensing in industrial power supplies.
For engineers reviewing the ISL28208FBZ datasheet, ISL28208FBZ pinout, ISL28208FBZ application, or ISL28208FBZ equivalent, key selection criteria include its guaranteed −40°C to +125°C operation, low 0.1µV/°C offset drift (SOIC variant), rail-to-rail input differential capability for comparator use, and robust 6kV HBM ESD rating in SOIC packaging.
Technical Context
The ISL28208FBZ employs a precision bipolar input stage enabling sub-230µV max input offset voltage over temperature and exceptional CMRR (>119dB) across its full common-mode range (V− − 0.5V to V+ − 1.8V). Its output stage drives capacitive loads without instability and maintains rail-to-rail swing into 10kΩ loads while avoiding phase reversal under overdrive conditions.
Designed for single-supply systems requiring ground-referenced input operation, it supports true differential input voltages up to ±42V and features low 80fA/√Hz input current noise-critical for high-impedance sensor interfaces and precision ADC front-ends where bias current-induced errors must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 3V to 40V total (±1.5V to ±20V); enables direct interface with 3.3V, 5V, 12V, and 24V industrial rails without level-shifting. |
| Input Offset Voltage | ±230µV max (−40°C to +125°C); ensures ≤0.023% error in 1V full-scale measurement systems. |
| Offset Drift | 0.1µV/°C typ (SOIC package); limits drift-induced error to <12µV over 125°C ambient range. |
| Supply Current | 165µA per amplifier at ±5V; allows dual-channel precision amplification in battery-powered or energy-constrained nodes. |
| Gain-Bandwidth | 1.2MHz; supports stable closed-loop gains up to 100× at DC–10kHz for sensor signal conditioning. |
| Voltage Noise | 15.8nV/√Hz at 1kHz; preserves SNR in µV-level thermocouple or strain gauge amplification. |
| CM Input Range | V− − 0.5V to V+ − 1.8V; permits direct ground-referenced input acquisition in single-supply data loggers. |
Pinout & Package
ISL28208FBZ is housed in an 8-lead SOIC package (Pb-free, M8.15E outline) with exposed thermal pad not present-standard SOIC footprint compatible with automated assembly and legacy PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT_A | Output of Amplifier A; rail-to-rail capable, drives 10kΩ load to within 70mV of V+ and 52mV of V−. |
| 2 | IN_A− | Inverting input of Amplifier A; supports differential input voltage up to ±42V relative to V−. |
| 3 | IN_A+ | Non-inverting input of Amplifier A; common-mode range extends 0.5V below V− for ground-sensing. |
| 4 | V− | Negative supply rail; referenced for all input/output voltage specifications and bias current return path. |
| 5 | V+ | Positive supply rail; accepts up to 42V absolute maximum; powers both amplifiers and internal bias circuitry. |
| 6 | VOUT_B | Output of Amplifier B; electrically isolated from VOUT_A; identical performance specs to Channel A. |
| 7 | IN_B− | Inverting input of Amplifier B; matched offset voltage (ΔVOS ≤ ±300µV) enables precision differential pair configurations. |
| 8 | IN_B+ | Non-inverting input of Amplifier B; independent of Channel A inputs; supports separate signal paths or feedback networks. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives to within 70mV of V+ and 52mV of V− at ±5V supply-maximizes dynamic range for ADC interfacing. |
| No phase reversal | Guaranteed under input overdrive conditions-eliminates latch-up risk in comparator-mode applications. |
| Below-ground input capability | Common-mode range extends 0.5V below V−-enables direct measurement of signals referenced to system ground in single-supply topologies. |
| Low 165µA supply current | Per-amplifier quiescent draw enables dual-channel precision amplification in always-on industrial sensors with <330µA total system overhead. |
| 6kV HBM ESD rating | Robust input protection meets IEC 61000-4-2 Level 3 requirements-reduces need for external TVS in field-deployed equipment. |
Applications
| Current Sensing in Low-Side Power Supplies | Precision Thermocouple Signal Conditioning |
|---|---|
Use Scenario: Monitoring load current in 12V/24V industrial DC power supplies using shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: Dual op-amp configured as differential amplifier (Channel A) and reference buffer (Channel B) to reject common-mode noise and scale mV-level shunt voltage to ADC input range. Use Value: Sub-230µV offset and 0.1µV/°C drift ensure <0.5% current measurement error across −40°C to +85°C ambient without calibration. | Use Scenario: Amplifying µV-level Seebeck voltage from Type-K thermocouples in environmental monitoring systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with cold-junction compensation reference buffering via second channel. Use Value: 15.8nV/√Hz noise density and 1.2MHz GBW preserve thermocouple signal integrity up to 100Hz bandwidth with minimal added noise. |
| Industrial Process Controller Analog I/O | High-Voltage Data Acquisition Front-End |
Use Scenario: Converting 4–20mA loop signals to 0–5V for microcontroller ADC sampling in PLC analog input modules. IC Role / Device Role / Timing Role: Dual-channel transimpedance and level-shifting amplifier-one channel converts current to voltage, the other offsets and scales output to match ADC range. Use Value: Rail-to-rail output and 40V max supply allow direct integration with 24V loop-powered systems without auxiliary supplies. | Use Scenario: Buffering and scaling high-voltage sensor outputs (e.g., 0–100V industrial transducers) down to 0–5V for isolation amplifier input. IC Role / Device Role / Timing Role: High-common-mode rejection differential amplifier with programmable gain, leveraging wide 3V–40V supply range and 119dB CMRR. Use Value: 42V absolute max differential input rating and V− − 0.5V input range enable safe, accurate attenuation of high-side sensed signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP2177ARZ | Higher 600µA supply current; 600kHz GBW; 0.6µV/°C offset drift; SOIC-8 package. | Better noise performance (3.5nV/√Hz) but lower bandwidth and higher power-suited for ultra-low-noise DC-coupled applications. | Select OP2177ARZ when ultra-low voltage noise dominates over power and bandwidth requirements. |
| AD8628ARZ | Zero-drift architecture; 1µV max offset; 2.5MHz GBW; 1.2mA supply current; SOIC-8 package. | Superior DC accuracy and drift cancellation but 7× higher quiescent current-best for calibration-critical, AC-coupled or low-duty-cycle systems. | Select AD8628ARZ when long-term zero-drift stability outweighs power budget constraints. |
Compared with OP2177ARZ and AD8628ARZ, the ISL28208FBZ offers optimal balance of low power (165µA), moderate bandwidth (1.2MHz), and industry-leading offset drift (0.1µV/°C) in a cost-effective SOIC-8 package-making it ideal for always-on, wide-temperature industrial signal chains where power, accuracy, and reliability are jointly constrained.
Availability
ISL28208FBZ is available at Aetrix Electronics and suitable for industrial process control, precision power supply monitoring, and high-reliability data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL28208FBZ 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 (now part of Renesas Electronics) is a semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, aerospace, and communications markets.
The ISL28208FBZ belongs to Intersil's ISL28x08 precision op-amp family, designed specifically for single-supply, high-accuracy signal conditioning in harsh industrial environments where wide temperature operation and low drift are mandatory.
FAQ
What is the maximum supply voltage rating for the ISL28208FBZ?
The ISL28208FBZ has an absolute maximum supply voltage rating of 42V total (i.e., V+ to V−), as specified in the Absolute Maximum Ratings table. Operation beyond this limit risks permanent damage. The device is fully characterized from 3V to 40V supply, making it suitable for 3.3V, 5V, 12V, 24V, and 36V industrial rails. Always maintain ≥2V margin below 42V in design margins.
Does the ISL28208FBZ support true rail-to-rail input operation?
The ISL28208FBZ does not offer full rail-to-rail input common-mode range. Its input common-mode voltage range is specified as V− − 0.5V to V+ − 1.8V-meaning it accepts inputs 0.5V below V− (enabling ground-referenced sensing in single-supply systems) but stops 1.8V short of V+. However, its differential input voltage range is rail-to-rail (±42V), allowing use as a comparator with large input swings.
What is the typical input offset voltage drift of the ISL28208FBZ over temperature?
The ISL28208FBZ SOIC variant (FBZ) has a typical input offset voltage temperature coefficient of 0.1µV/°C, with a maximum of 1.1µV/°C over −40°C to +125°C. This ultra-low drift is confirmed in the Electrical Specifications tables for VS = ±15V and ±5V, and is critical for maintaining accuracy in uncalibrated, wide-temperature industrial applications where thermal gradients are unavoidable.
Can the ISL28208FBZ drive capacitive loads without oscillation?
Yes-the ISL28208FBZ output stage is explicitly characterized for driving large capacitive loads rail-to-rail, as stated in the datasheet introduction. Its unity-gain stable architecture and optimized compensation allow direct connection to ADC input capacitors (typically 10–20pF) and long PCB traces without external isolation resistors. Stability is verified up to 1000pF in typical configurations per application notes and SPICE model validation.
Is the ISL28208FBZ pin-compatible with other devices in the ISL28x08 family?
Yes-the ISL28208FBZ shares identical pinout and footprint with the ISL28108FBZ (single) and ISL28408FBZ (quad) in SOIC packages, as confirmed by the Pin Configurations and Pin Descriptions sections. All three variants use the same 8-lead SOIC layout for dual and single versions (with unused pins NC), enabling scalable design reuse across channel count requirements without PCB redesign.
ISL28208FBZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.45V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 13 nA
- Voltage - Input Offset:
- 25 µV
- Current - Supply:
- 185µA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISL28208FBZ FAQ
1.How can I place an order for ISL28208FBZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL28208FBZ 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 ISL28208FBZ reliable?
The price and inventory of ISL28208FBZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL28208FBZ is usually 5 days.
3.What payment methods are accepted for ISL28208FBZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL28208FBZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL28208FBZ?
ISL28208FBZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL28208FBZ 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 ISL28208FBZ?
For technical support, including ISL28208FBZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL28208FBZ requirements.
6.How does Aetrix verify that ISL28208FBZ is sourced from the original manufacturer or authorized distributors?
All ISL28208FBZ 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 ISL28208FBZ meets industry standards.
7.What is the process for return or replacement of ISL28208FBZ?
All ISL28208FBZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL28208FBZ, 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 ISL28208FBZ part is unused and in its original packaging.
Return procedure for ISL28208FBZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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