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Renesas ISL28230CUZ
- Part No.:
- ISL28230CUZ
- Manufacturer:
- Renesas
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL28230CUZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,855
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Product details
Overview
ISL28230CUZ from Renesas Electronics is a dual micropower, rail-to-rail input/output operational amplifier optimized for precision DC-coupled signal conditioning in low-voltage, battery-powered systems. It delivers 40 µV max input offset voltage, 150 nV/°C max offset drift, 20 µA per amplifier quiescent current, 400 kHz gain-bandwidth, and operates from 1.8V to 5.5V single supply - enabling high-accuracy current sensing in handheld medical devices.
For engineers reviewing the ISL28230CUZ datasheet, ISL28230CUZ pinout, ISL28230CUZ application, or ISL28230CUZ equivalent, key selection criteria include ultra-low drift performance at sub-100nV/°C level, guaranteed rail-to-rail output swing within 50 mV of rails under 10 kΩ load, and validated operation across -40°C to +125°C full-grade temperature range in MSOP-8 packaging.
Technical Context
The ISL28230CUZ employs a CMOS input stage with parallel PMOS/NMOS transistors to achieve true rail-to-rail input capability (±100 mV beyond rails) and high input impedance (>1 TΩ), eliminating distortion from fast slewing inputs. Its open-loop gain of 150 dB supports stable high-gain DC amplification without thermal runaway.
Internal ESD protection diodes clamp inputs to V+ and V− rails, limiting differential overvoltage stress; external series resistors are required if input signals exceed rails by >0.5 V. The device uses a common-source PMOS/NMOS output stage delivering ±15 mA short-circuit current and settling to 0.1% in 35 µs for 2 VP-P steps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±40 µV max - enables <100 nV/°C system-level DC error in 100× gain sensor front ends |
| Offset Drift | 150 nV/°C max - ensures stable baseline in temperature-variable environments like portable diagnostics |
| Supply Current | 20 µA per amplifier - supports multi-year battery life in 2xAA or Li-ion powered instrumentation |
| Gain-Bandwidth | 400 kHz - sufficient for anti-aliasing and closed-loop bandwidth up to 4 kHz in strain gauge interfaces |
| Input Noise (0.01–10 Hz) | 1.1 µVP-P typical - resolves sub-µV DC signals in electronic weigh scales and precision regulation |
| Rail-to-Rail Output | Swings to within 50 mV of V+ and V− driving 10 kΩ - maximizes dynamic range in 3.3 V single-supply systems |
| CMRR / PSRR | 110 dB / 105 dB min - rejects power supply ripple and common-mode interference in noisy industrial settings |
Pinout & Package
ISL28230CUZ is housed in an 8-lead MSOP package (JEDEC MO-187-AA compliant, M8.118A drawing), with exposed thermal pad connected to V− for enhanced thermal performance in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN−_A | Inverting input of Amplifier A - high-impedance node requiring guarded trace routing |
| 2 | IN+_A | Non-inverting input of Amplifier A - accepts signals from −0.1 V to 5.1 V with 110 dB CMRR |
| 3 | V− | Negative supply rail - must be connected to ground or negative rail; thermal pad tied here |
| 4 | OUT_A | Amplifier A output - drives capacitive loads ≤3.7 pF without instability; 15 mA short-circuit limit |
| 5 | OUT_B | Amplifier B output - independent channel with identical AC/DC specs; no crosstalk >−140 dB at 1 kHz |
| 6 | IN−_B | Inverting input of Amplifier B - electrically isolated from Channel A; same ESD protection as IN−_A |
| 7 | IN+_B | Non-inverting input of Amplifier B - supports same rail-to-rail common-mode range as IN+_A |
| 8 | V+ | Positive supply rail - accepts 1.8 V to 5.5 V; internal regulation maintains bias stability across voltage range |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Accepts signals 100 mV beyond V+ or V− - eliminates external level-shifting in single-supply sensor interfaces |
| Ultra-low offset drift | 150 nV/°C max - reduces calibration frequency in field-deployed temperature measurement nodes |
| Low 1/f noise | 1.1 µVP-P (0.01–10 Hz) - enables stable DC gain >10,000 in strain gauge bridges without chopper artifacts |
| High open-loop gain | 150 dB - ensures <0.01% gain error at 100× closed-loop configuration with 10 kΩ feedback |
| Full-grade temp range | −40°C to +125°C - qualified for automotive cabin sensors and industrial motor control feedback loops |
Applications
| Bi-directional Current Sense | Temperature Measurement |
|---|---|
Use Scenario: High-side current monitoring in battery management systems using 0.2 Ω shunt resistor and 3.3 V supply. IC Role / Device Role / Timing Role: Precision differential amplifier with rail-to-rail output driving ADC reference buffer. Use Value: ±40 µV offset ensures <1 mV total error at 1 A sense current; 20 µA quiescent current extends standby time. | Use Scenario: RTD or thermistor interface in portable clinical thermometers with 1.8 V coin-cell supply. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front end with 100× gain. Use Value: 150 nV/°C drift contributes <0.15 °C error over 100°C span; 1.1 µVP-P noise avoids averaging overhead. |
| Medical Equipment | Electronic Weigh Scales |
Use Scenario: ECG electrode amplifier stage in handheld patient monitors operating off single Li-ion cell. IC Role / Device Role / Timing Role: First-stage DC-coupled amplifier with high CMRR rejecting 50/60 Hz mains interference. Use Value: 110 dB CMRR suppresses common-mode noise; rail-to-rail input accommodates electrode offset up to ±300 mV. | Use Scenario: Strain gauge bridge amplifier in precision bench scales with 5 V excitation and 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage providing 1000× amplification before digitization. Use Value: 1.1 µVP-P noise allows resolution of <10 µV bridge outputs; 40 µV offset calibrated out once per production run. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture (chopper-stabilized); 0.02 µV/°C drift vs ISL28230CUZ's 150 nV/°C; higher 1/f noise corner at 10 Hz | Preferred for ultra-stable DC gain >10⁵; less suitable for low-frequency sensor signals below 0.1 Hz due to chopper ripple | Select OPA2333AIDR when long-term zero stability outweighs low 0.01–10 Hz noise; verify ripple filtering for analog front ends |
| AD8603ARZ-REEL7 | Higher quiescent current (80 µA vs 20 µA); lower GBW (475 kHz); no guaranteed full-grade temp range (−40°C to +125°C not specified) | Better suited for non-battery applications where power budget allows; limited qualification for automotive or extended industrial use | Choose AD8603ARZ-REEL7 only for commercial-temp designs needing marginally higher bandwidth; avoid in battery-powered full-grade systems |
Compared with OPA2333AIDR and AD8603ARZ-REEL7, the ISL28230CUZ uniquely balances micropower consumption, full-grade temperature qualification, and ultra-low 1/f noise - making it optimal for portable precision instruments where battery life, environmental robustness, and sub-microvolt signal integrity are simultaneously critical.
Availability
ISL28230CUZ is available at Aetrix Electronics and suitable for bi-directional current sense, temperature measurement, medical equipment, and electronic weigh scales requiring stable component supply across industrial and medical OEM programs.
Supply support for ISL28230CUZ 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 is a global semiconductor leader delivering microcontrollers, analog power, and connectivity solutions for automotive, industrial, and IoT markets.
The ISL28230CUZ belongs to Renesas' ISL28x30 precision op amp family, designed specifically for ultra-low-power, high-accuracy analog signal conditioning in battery-operated and thermally demanding applications.
FAQ
What is the maximum operating temperature range for the ISL28230CUZ?
The ISL28230CUZ is rated for full-grade operation from −40°C to +125°C. This specification is guaranteed per the datasheet (FN7623 Rev.8.00, Page 1) and applies to all package variants including the ISL28230CUZ in 8-lead MSOP. Commercial-grade versions exist but the ISL28230CUZ itself is full-grade qualified.
Does the ISL28230CUZ support true rail-to-rail input and output?
Yes, the ISL28230CUZ supports true rail-to-rail input (capable of accepting signals 100 mV beyond V+ or V−) and rail-to-rail output (swings to within 50 mV of either rail into 10 kΩ). These capabilities are confirmed in the Functional Description section (Page 11) and Electrical Specifications table (Page 6) of the ISL28230CUZ datasheet.
What is the typical supply current per amplifier for the ISL28230CUZ?
The typical supply current per amplifier for the ISL28230CUZ is 20 µA, with a maximum of 35 µA over temperature and supply voltage (FN7623 Rev.8.00, Page 7). This value is measured under recommended operating conditions (V+ = 5 V, V− = 0 V, T = +25°C, RL = open) and remains stable across the full 1.8 V to 5.5 V supply range.
Can the ISL28230CUZ drive capacitive loads without oscillation?
The ISL28230CUZ is stable driving capacitive loads up to 3.7 pF with unity-gain configuration, as verified in Figure 14 (Page 9) of the datasheet. For larger capacitive loads, external isolation resistance or feedback compensation is required - the device does not feature internal capacitive-load drive enhancement.
Is the ISL28230CUZ RoHS compliant and lead-free?
Yes, the ISL28230CUZ is RoHS compliant and lead-free. Per the Ordering Information table (Page 20), all ISL28230 variants, including ISL28230CUZ, use 100% matte tin plate (e3 termination finish) and meet IPC/JEDEC J-STD-020 Pb-free reflow requirements.
ISL28230CUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.2V/µs
- Gain Bandwidth Product:
- 400 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 250 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 20µA (x2 Channels)
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ISL28230CUZ FAQ
1.How can I place an order for ISL28230CUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL28230CUZ 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 ISL28230CUZ reliable?
The price and inventory of ISL28230CUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL28230CUZ is usually 5 days.
3.What payment methods are accepted for ISL28230CUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL28230CUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL28230CUZ?
ISL28230CUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL28230CUZ 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 ISL28230CUZ?
For technical support, including ISL28230CUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL28230CUZ requirements.
6.How does Aetrix verify that ISL28230CUZ is sourced from the original manufacturer or authorized distributors?
All ISL28230CUZ 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 ISL28230CUZ meets industry standards.
7.What is the process for return or replacement of ISL28230CUZ?
All ISL28230CUZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL28230CUZ, 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 ISL28230CUZ part is unused and in its original packaging.
Return procedure for ISL28230CUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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