My Inquiry
My Account
Renesas ISL28208FRTZ
- Part No.:
- ISL28208FRTZ
- Manufacturer:
- Renesas
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
ISL28208FRTZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,727
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL28208FRTZ from Renesas (formerly Intersil) is a dual-channel, rail-to-rail output, precision operational amplifier optimized for single-supply operation with 0.5V below V− input capability, 15.8nV/√Hz voltage noise, 165µA per amplifier supply current at ±5V, and guaranteed operation from −40°C to +125°C. It enables high-accuracy current sensing in industrial power supplies and low-drift signal conditioning in medical instrumentation.
For engineers reviewing the ISL28208FRTZ datasheet, ISL28208FRTZ pinout, ISL28208FRTZ application, or ISL28208FRTZ equivalent, key selection criteria include its 0.2µV/°C typical offset drift, rail-to-rail output swing into 10kΩ, 1.2MHz gain-bandwidth product, and TDFN-8 package thermal performance (θJA = 47°C/W).
Technical Context
The ISL28208FRTZ employs a precision bipolar input stage enabling sub-230µV max input offset voltage and 119dB common-mode rejection over VCM = V− − 0.5V to V+ − 1.8V. Its output stage delivers rail-to-rail swing with <85mV low-side overhead and <110mV high-side overhead at 10kΩ load, supporting direct ADC driving without level-shifting.
It operates from 3V to 40V total supply range (±1.5V to ±20V), features no phase reversal under overdrive, and maintains stable 0.4V/µs slew rate and 27µs 0.01% settling time across −40°C to +125°C - critical for closed-loop control in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 3V to 40V total (±1.5V to ±20V); supports wide-input industrial and automotive power rails. |
| Input Offset Voltage | ±230µV max (−40°C to +125°C); ensures ≤0.023% error in 10V full-scale precision measurement. |
| Offset Drift | 0.2µV/°C typ; contributes <24µV error over 120°C span - essential for uncalibrated long-term stability. |
| Noise Density | 15.8nV/√Hz at 1kHz; enables <1µVRMS noise in 10kHz bandwidth for sensor front-ends. |
| Supply Current | 165µA per amplifier at ±5V; allows dual-channel precision amplification in battery-powered IoT nodes. |
| Output Swing | Rail-to-rail into 10kΩ; delivers >99.5% of V+–V− range - eliminates need for external level-shifting circuitry. |
| Gain Bandwidth | 1.2MHz; supports stable unity-gain buffering and closed-loop gains up to ~120 for anti-aliasing filters. |
Pinout & Package
ISL28208FRTZ is housed in an 8-lead 3×3mm TDFN package with exposed thermal pad (Package Drawing L8.3x3K). The pad must be soldered to PCB ground or most negative potential for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT_A | Amplifier A output; drives loads up to 10kΩ rail-to-rail with <85mV overhead at V−. |
| 2 | IN_A− | Inverting input of Channel A; accepts common-mode voltages down to V− − 0.5V. |
| 3 | IN_A+ | Non-inverting input of Channel A; enables true ground-referenced sensing in single-supply systems. |
| 4 | V− | Negative supply rail; reference for both inputs and output; supports single-supply operation with V− = 0V. |
| 5 | V+ | Positive supply rail; sets upper rail for rail-to-rail output swing and input common-mode range. |
| 6 | VOUT_B | Amplifier B output; independent channel with identical DC and AC specs to Channel A. |
| 7 | IN_B− | Inverting input of Channel B; matched offset and drift to Channel A for differential pair applications. |
| 8 | IN_B+ | Non-inverting input of Channel B; supports dual-sensor or dual-path signal conditioning on one die. |
| Pad | Thermal Pad | Exposed copper pad; must be connected to ground plane for θJA = 47°C/W thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output + V− − 0.5V input | Enables true single-supply operation from 0V common-mode - critical for ground-referenced current shunt monitoring. |
| No phase reversal | Guarantees stable behavior during input overdrive or saturation - prevents latch-up in comparator-mode use. |
| 1.2MHz GBW with 0.4V/µs slew rate | Supports accurate 10kHz sinusoidal signals and fast step response in closed-loop control loops. |
| 0.2µV/°C offset drift (typ) | Reduces calibration frequency in field-deployed equipment - extends recalibration intervals beyond 5 years. |
| 15.8nV/√Hz noise density | Preserves SNR in µV-level thermocouple or strain gauge amplification without additional filtering. |
| −40°C to +125°C operation | Qualified for under-hood automotive, motor drive feedback, and industrial PLC I/O modules. |
Applications
| Current Sense Amplifier | Precision Instrumentation |
|---|---|
Use Scenario: Low-side current sensing in 24V industrial power supplies using 10mΩ shunt resistor. IC Role / Device Role / Timing Role: Dual op-amp configured as difference amplifier (Channel A) and reference buffer (Channel B) for ratiometric ADC interface. Use Value: 0.5V below V− input allows direct connection to shunt grounded at 0V; rail-to-rail output drives 12-bit SAR ADC input directly. | Use Scenario: Front-end amplification for portable handheld multimeters measuring µV-level thermocouple outputs. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with 1000V/MΩ input impedance and <230µV offset error. Use Value: 15.8nV/√Hz noise and 0.2µV/°C drift ensure <0.1°C measurement uncertainty over full operating temperature range. |
| Medical Patient Monitor | Industrial Process Control |
Use Scenario: Biopotential signal conditioning (ECG/EEG) with DC-coupled electrode interface and 50Hz notch filtering. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with ultra-low bias current (−13nA typ) minimizing electrode polarization. Use Value: Input bias current <20nA prevents DC baseline shift in high-impedance electrode circuits; 119dB CMRR rejects 50Hz mains interference. | Use Scenario: Closed-loop pressure transducer signal conditioning in oil & gas downhole sensors operating at 125°C ambient. IC Role / Device Role / Timing Role: Temperature-stable gain block feeding 4–20mA transmitter DAC, requiring minimal drift over temperature. Use Value: Guaranteed −40°C to +125°C operation and 0.2µV/°C offset drift maintain <0.05%FS accuracy without on-board temperature compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP2177ARZ | Higher 600µA supply current, 1.3MHz GBW, 0.1µV/°C drift; SOIC-8 only. | Better drift but higher power; unsuitable for battery-powered designs where ISL28208FRTZ's 165µA is critical. | Select OP2177ARZ only when ultra-low drift (<0.1µV/°C) outweighs power budget constraints. |
| TLV2772IDR | Lower 1.8MHz GBW, 2.5V–16V supply, 1.2µV/°C drift; TDFN-8 available but not qualified to +125°C. | Limited to 85°C max ambient; cannot replace ISL28208FRTZ in extended-temperature industrial or automotive roles. | Use TLV2772IDR only in commercial-grade consumer applications with <85°C ambient requirement. |
Compared with OP2177ARZ and TLV2772IDR, ISL28208FRTZ uniquely balances ultra-low power (165µA), extended temperature rating (−40°C to +125°C), and precision (0.2µV/°C drift) in a thermally enhanced TDFN-8 package - making it optimal for space-constrained, high-reliability industrial sensing.
Availability
ISL28208FRTZ is available at Aetrix Electronics and suitable for industrial process control, medical instrumentation, and precision power supply monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL28208FRTZ 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 acquired Intersil in 2017 and continues to manufacture and support its precision analog portfolio, including rail-to-rail op-amps and high-voltage interfaces.
The ISL28208FRTZ belongs to Renesas' ISL28xxx precision amplifier family, designed specifically for high-accuracy, low-power, extended-temperature applications in industrial automation, medical devices, and test equipment.
FAQ
What is the maximum supply voltage for ISL28208FRTZ?
The ISL28208FRTZ supports a total supply voltage range of 3V to 40V (±1.5V to ±20V), with absolute maximum rating of 42V. Operation at 40V is fully characterized and guaranteed across −40°C to +125°C, making ISL28208FRTZ suitable for high-voltage industrial bus monitoring and 24V/36V system power rails.
Does ISL28208FRTZ support true single-supply operation with input down to ground?
Yes, ISL28208FRTZ features a common-mode input voltage range extending to 0.5V below the V− rail. When V− = 0V (single-supply configuration), inputs operate from −0.5V to V+ − 1.8V - enabling direct connection to ground-referenced shunt resistors and sensors without level-shifting circuitry, a key capability confirmed in the ISL28208FRTZ datasheet Figure 23.
What is the thermal resistance (θJA) of the ISL28208FRTZ TDFN-8 package?
The ISL28208FRTZ in 8-lead TDFN package (L8.3x3K) has a typical junction-to-ambient thermal resistance (θJA) of 47°C/W when mounted on a high thermal conductivity test board in free air. This value assumes proper soldering of the exposed thermal pad to a PCB ground plane - critical for maintaining safe junction temperatures under continuous 165µA per amplifier operation at +125°C ambient.
Can ISL28208FRTZ be used as a comparator?
Yes, ISL28208FRTZ supports comparator operation due to its rail-to-rail differential input voltage range and absence of phase reversal. The datasheet explicitly states "rail-to-rail differential input voltage range for use as a comparator" and confirms no phase reversal under overdrive conditions (Functional Description section, Page 21). However, dedicated comparators offer faster response; ISL28208FRTZ is best suited for low-speed, precision threshold detection where DC accuracy matters.
Is ISL28208FRTZ pin-compatible with other variants in the ISL28208 family?
Yes, all ISL28208 variants - including ISL28208FBZ (SOIC-8), ISL28208FUZ (MSOP-8), and ISL28208FRTZ (TDFN-8) - share identical pinouts per the Pin Configurations diagram (Page 4) and Pin Descriptions table (Page 5). This allows drop-in replacement across packages when board layout permits, preserving schematic and firmware design while optimizing for size (TDFN), thermal performance (TDFN), or assembly compatibility (SOIC).
ISL28208FRTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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-TDFN (3x3)
ISL28208FRTZ FAQ
1.How can I place an order for ISL28208FRTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL28208FRTZ 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 ISL28208FRTZ reliable?
The price and inventory of ISL28208FRTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL28208FRTZ is usually 5 days.
3.What payment methods are accepted for ISL28208FRTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL28208FRTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL28208FRTZ?
ISL28208FRTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL28208FRTZ 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 ISL28208FRTZ?
For technical support, including ISL28208FRTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL28208FRTZ requirements.
6.How does Aetrix verify that ISL28208FRTZ is sourced from the original manufacturer or authorized distributors?
All ISL28208FRTZ 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 ISL28208FRTZ meets industry standards.
7.What is the process for return or replacement of ISL28208FRTZ?
All ISL28208FRTZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL28208FRTZ, 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 ISL28208FRTZ part is unused and in its original packaging.
Return procedure for ISL28208FRTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL28208FRTZ Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
