Features
- Single Supply Operation: 1.8V to 5.5V
- Low Input Offset Voltage: ±10µV
- Low Supply Current: 22µA
- Gain Bandwidth Product: 340kHz
- Temperature Range Support: -40°C to +125°C
ISL28x33A Typical Application Circuit
Description
The ISL28133A is a single micropower, chopper-stabilized operational amplifier designed for precision and efficiency in compact spaces. With a quiescent current of just 22µA and rail-to-rail input/output, it delivers exceptional performance across a wide supply range of 1.8V to 5.5V. Its ultra-low input offset voltage (10µV max) and minimal noise make it ideal for high-accuracy applications like medical instrumentation, temperature sensing, and electronic weight scales. The device operates across the temperature range of -40°C to +125°C and is available in both an SOT23-5 and SC70-5 packages.
Parameters
| Attributes | Value |
|---|---|
| Channels (#) | 1 |
| Temp. Range (°C) | -40 to +125°C |
| Bandwidth (MHz) | 0.34 |
| IBIAS (nA) | 0.037 |
| IS per Amp (mA) | 0.022 |
| Offset Voltage (Max) (mV) | 0.002 |
| Slew Rate (V/µs) | 0.2 |
| Rail-to-Rail Input | Yes |
| Rail-to-Rail Output | Yes |
| Single Supply Voltage Range (V) | 1.8 - 5.5 |
| Gain Min | 1 |
| IOUT (A) | 0.019 |
| Noise VN (nV/√Hz) | 43.5 |
| AVOL (dB) | 143 |
| CMRR (dB) | 127 |
| PSRR (db) | 124 |
| Enable | No |
| VOUT (V) | 5 |
| VS (Min) (V) | 1.8 |
| VS (Max) (V) | 5.5 |
| Thermal Shutdown | No |
Application Block Diagrams
 | Humanoid Battery Management System Integrated humanoid robot BMS enabling safe, real-time power management, protection, and battery-state control. |
 | Mid-Range Thermostat Mid-range thermostat with Wi‑Fi, integrated sensors, and smart home connectivity for enhanced comfort and efficiency. |
 | High-End Central Thermostat Central thermostat system integrates satellite thermostats for smart climate control and efficiency. |
Additional Applications
- Temperature Measurement
- Medical Equipment
- Appliances
- Precision Sensors
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| Part Number | Status | Samples | Longevity | Stock | Package | Budgetary Price (USD) | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Pitch (mm) | Pkg. Dimensions (mm) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ISL28133AFEZ-T7 | Active | Available | 2035 May | In Stock | SC70 | 1ku | $0.58 | 5# | Reel | 1 | 0.7mm | 1.2 x 2.0 x 1.90 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C |
| ISL28133AFHZ-T7 | Active | Available | 2035 May | In Stock | SOT23 | 1ku | $0.58 | 5# | Reel | 1 | 1mm | 2.9 x 1.6 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C |
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- DatasheetISL28x33A DatasheetRECOMMENDEDPDF 2.32 MB R13DS0007EU0102 Rev.1.02 Jan 15, 2026The ISL28133A, ISL28233A, and ISL28433A are single, dual, and quad micropower, chopper-stabilized operational amplifiers. This document describes the main design and operational characteristics, including pin information, specifications, functional description, and packaging.
- TrainingPDF 162 KB R13TB0003EU0100 Rev.1.00 Dec 12, 2023
- Application NotePDF 381 KB R13AN0015EU0100 Rev.1.00 May 16, 2022AI-generated Summary: Low-voltage precision operational amplifiers from Renesas feature ultra-low input offset voltages with on-chip auto-zeroing, ideal for precise sensor signal conditioning in compact applications. Key design considerations include minimizing thermoelectric (Seebeck) voltages caused by PCB junctions and temperature gradients, which can introduce offset errors amplified by high gain. Techniques such as using dummy resistors, maintaining uniform PCB temperature with ground planes, and employing guard rings reduce these errors. The ISL28134 supports precision high-side current sensing with adaptations for high-voltage systems using level shifting via Zener diodes. Output current can be increased by adding an NPN transistor as a current booster, ensuring linear operation within voltage limits. The document provides detailed circuit examples and design guidelines for optimizing performance and minimizing errors in low-voltage op-amp applications.
- Application NotePDF 357 KB an1694 Jan 19, 2004AI-generated Summary: The document outlines the four fundamental internal blocks of an operational amplifier and presents a simple 2:1 stage circuit diagram. It includes important legal notices from Renesas Electronics regarding the use, liability, and intellectual property rights of their semiconductor products. The document clarifies product quality grades, intended applications, and restrictions on use in life-critical or hazardous systems. It emphasizes compliance with applicable laws and safety responsibilities when using Renesas products. Contact information for Renesas sales offices worldwide is also provided.
- DatasheetISL28x33A DatasheetRECOMMENDEDPDF 2.32 MB R13DS0007EU0102 Rev.1.02 Jan 15, 2026The ISL28133A, ISL28233A, and ISL28433A are single, dual, and quad micropower, chopper-stabilized operational amplifiers. This document describes the main design and operational characteristics, including pin information, specifications, functional description, and packaging.
Recommended Documents (1)
- DatasheetISL28x33A DatasheetRECOMMENDEDPDF 2.32 MB R13DS0007EU0102 Rev.1.02 Jan 15, 2026The ISL28133A, ISL28233A, and ISL28433A are single, dual, and quad micropower, chopper-stabilized operational amplifiers. This document describes the main design and operational characteristics, including pin information, specifications, functional description, and packaging.
Datasheets (1)
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- Application NotePDF 381 KB R13AN0015EU0100 Rev.1.00 May 16, 2022AI-generated Summary: Low-voltage precision operational amplifiers from Renesas feature ultra-low input offset voltages with on-chip auto-zeroing, ideal for precise sensor signal conditioning in compact applications. Key design considerations include minimizing thermoelectric (Seebeck) voltages caused by PCB junctions and temperature gradients, which can introduce offset errors amplified by high gain. Techniques such as using dummy resistors, maintaining uniform PCB temperature with ground planes, and employing guard rings reduce these errors. The ISL28134 supports precision high-side current sensing with adaptations for high-voltage systems using level shifting via Zener diodes. Output current can be increased by adding an NPN transistor as a current booster, ensuring linear operation within voltage limits. The document provides detailed circuit examples and design guidelines for optimizing performance and minimizing errors in low-voltage op-amp applications.
- Application NotePDF 357 KB an1694 Jan 19, 2004AI-generated Summary: The document outlines the four fundamental internal blocks of an operational amplifier and presents a simple 2:1 stage circuit diagram. It includes important legal notices from Renesas Electronics regarding the use, liability, and intellectual property rights of their semiconductor products. The document clarifies product quality grades, intended applications, and restrictions on use in life-critical or hazardous systems. It emphasizes compliance with applicable laws and safety responsibilities when using Renesas products. Contact information for Renesas sales offices worldwide is also provided.
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