特性
- Low power 120µA typical supply current (ISL28276)
- 100µV maximum offset voltage
- 500pA typical input bias current
- 400kHz typical gain-bandwidth product
- 115dB typical PSRR and CMRR
- Single supply operation down to 2.4V
- Input is capable of swinging above V+ and to V- (ground sensing)
- Rail-to-rail input and output (RRIO)
- Pb-free (RoHS compliant)
描述
Support is limited to customers who have already adopted these products.
The ISL28176, ISL28276 and ISL28476 are single, dual and quad channel micropower operational amplifiers optimized for single supply operation over the 2. 4V to 5V range. They can be operated from one lithium cell or two Ni-Cd batteries. These devices feature an Input Range Enhancement Circuit (IREC) which enables them to maintain CMRR performance for input voltages 10% above the positive supply rail and down to the negative supply. The output operation is rail-to-rail. The ISL28276 and ISL28476 draw minimal supply current while meeting excellent DC-accuracy, AC-performance, noise and output drive specifications. The ISL28276 (QSOP package only) contains a power-down enable pin that reduces the power supply current to typically 4µA in the disabled state.
应用
- Battery- or solar-powered systems
- 4mA to 25mA current loops
- Handheld consumer products
- Medical devices
- Thermocouple amplifiers
- Photodiode pre-amps
- pH probe amplifiers
| Part Number | Status | Samples | Stock | Package | Lead Count (#) | Carrier Type | Pb (Lead) Free | Temp. Range (°C) |
|---|---|---|---|---|---|---|---|---|
| ISL28476FAZ | Obsolete | N/A | Out of Stock | QSOP | 16# | Tube | No | -40 to +125°C |
| ISL28476FAZ-T7 | Obsolete | N/A | In Stock | QSOP | 16# | Reel | No | -40 to +125°C |
- 应用说明英语PDF 564 KB an1993 2018年5月22日AI 生成的摘要: Voltage feedback (VFB) amplifiers use a differential input pair, a high-impedance stage, and an output buffer to convert input voltage differences into output voltage. The VFB amplifier's gain decreases at a dominant pole frequency due to compensation capacitors. Current feedback (CFB) amplifiers include a class AB input amplifier, current mirror, high-impedance stage, and output buffer. CFB amplifiers provide faster switching and higher slew rates by drawing charge/discharge currents directly from supply rails, unlike VFB amplifiers which are limited by biasing current sources.
- 模型 - SPICE英语TXT 5 KB el8176_isl28176_isl28276_isl28476 2017年11月17日
- 应用说明英语PDF 357 KB an1694 2004年1月19日AI 生成的摘要: 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.
- 应用说明英语PDF 8.19 MB an1548 2004年1月19日AI 生成的摘要: The iSim Active Filter Designer sequences poles from high Q to low Q in ascending gains to reduce output clipping and noise. It allows manual or semi-automatic pole and gain entry, placing real poles last for noise and stopband advantages. The design process involves defining constraints, selecting op amps, and simulating solutions. Users can preview filter shapes or manually input poles from external tools. The tool supports multi-stage designs with selectable op amps based on supply voltage and output swing requirements.
- 应用说明英语PDF 843 KB an535 2002年6月05日AI 生成的摘要: A Data Acquisition System (DAS) requires careful design of signal conditioning, transducer selection, and signal transmission to ensure high accuracy. Signal conditioning includes multiplexing, amplification, filtering, and calibration, ideally performed near the transducer. Transducers convert physical variables to electrical signals, often voltage, with low source resistance preferred. Signal paths can be single-ended or differential; differential paths better reject common mode noise, especially for low-level signals. Shielded twisted pairs and balanced lines reduce interference. Filters, typically Butterworth low-pass, prevent aliasing and maintain signal integrity.
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手册和指南 (1)
- 应用说明英语PDF 564 KB an1993 2018年5月22日AI 生成的摘要: Voltage feedback (VFB) amplifiers use a differential input pair, a high-impedance stage, and an output buffer to convert input voltage differences into output voltage. The VFB amplifier's gain decreases at a dominant pole frequency due to compensation capacitors. Current feedback (CFB) amplifiers include a class AB input amplifier, current mirror, high-impedance stage, and output buffer. CFB amplifiers provide faster switching and higher slew rates by drawing charge/discharge currents directly from supply rails, unlike VFB amplifiers which are limited by biasing current sources.
- 应用说明英语PDF 357 KB an1694 2004年1月19日AI 生成的摘要: 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.
- 应用说明英语PDF 8.19 MB an1548 2004年1月19日AI 生成的摘要: The iSim Active Filter Designer sequences poles from high Q to low Q in ascending gains to reduce output clipping and noise. It allows manual or semi-automatic pole and gain entry, placing real poles last for noise and stopband advantages. The design process involves defining constraints, selecting op amps, and simulating solutions. Users can preview filter shapes or manually input poles from external tools. The tool supports multi-stage designs with selectable op amps based on supply voltage and output swing requirements.
- 应用说明英语PDF 843 KB an535 2002年6月05日AI 生成的摘要: A Data Acquisition System (DAS) requires careful design of signal conditioning, transducer selection, and signal transmission to ensure high accuracy. Signal conditioning includes multiplexing, amplification, filtering, and calibration, ideally performed near the transducer. Transducers convert physical variables to electrical signals, often voltage, with low source resistance preferred. Signal paths can be single-ended or differential; differential paths better reject common mode noise, especially for low-level signals. Shielded twisted pairs and balanced lines reduce interference. Filters, typically Butterworth low-pass, prevent aliasing and maintain signal integrity.
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- 模型 - SPICE英语TXT 5 KB el8176_isl28176_isl28276_isl28476 2017年11月17日
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