Renesas Electronics Corporation

The ISL28130, ISL28230 and ISL28430 are single, dual and quad micropower, low offset drift operational amplifiers that are optimized for single and dual supply operation from 1. 8V to 5. 5V and ±0. 9V to ±2. 75V. Their low supply current of 20µA and rail-to-rail input/output enable the ISL28130, ISL28230, and ISL28430 to be an excellent general-purpose op amp for a range of applications. The ISL28130, ISL28230 and ISL28430 are ideal for handheld devices that operate off 2AA or single Li-ion batteries. The ISL28130 is available in industry standard pinouts for 5 Ld SOT-23, 5 Ld SC70 and 8 Ld SOIC packages. The ISL28230 is available in industry standard pinouts for 8 Ld MSOP, 8 Ld SOIC and 8 Ld DFN packages. The ISL28430 is available in 14 Ld TSSOP and 14 Ld SOIC packages. Commercial devices operate over the temperature range of 0°C to 70°C. Full temperature range devices operate over the temperature range of -40°C to 125°C.

The ISL28233 is a dual micropower, chopper stabilized operational amplifier that is optimized for single and dual supply operation from 1.65V to 6.0V and ±0.825V to ±3.0V. Its low supply current of 18µA and wide input range enable the ISL28233 to be an excellent general purpose op amp for a wide range of applications. This op amp is ideal for handheld devices that operate off 2 AA or single Li-ion batteries. The ISL28233 is available in 8 Ld MSOP, 8 Ld SOIC and 8 Ld DFN packages and operates over the temperature range of -40 °C to +125 °C.

The ISL28236 is a low-power dual operational amplifier optimized for single supply operation from 2.4V to 5.5V, allowing operation from one lithium cell or two Ni-Cd batteries. The device features a gain-bandwidth product of 5MHz. The ISL28236 features an Input Range Enhancement Circuit (IREC), which enables the amplifier to maintain CMRR performance for input voltages greater than the positive supply. The input signal is capable of swinging 0.25V above the positive supply and to the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail. The part typically draws less than 1mA supply current per amplifier while meeting excellent DC accuracy, AC performance, noise and output drive specifications. The ISL28236 is available in the 8 Ld SOIC and the 8 Ld MSOP. Operation is guaranteed over the -40 °C to +125 °C temperature range.

The ISL28248 is a 4.5MHz low-power dual operational amplifier. The part is optimized for single supply operation from 2.4V to 5.5V, allowing operation from one lithium cell or two NiCd batteries. The device features an Input Range Enhancement Circuit (IREC), which enables it to maintain CMRR performance for input voltages greater than the positive supply. The input signal is capable of swinging 0.25V above the positive supply and to 100mV below the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail. The parts draw minimal supply current (900μA per amplifier) while meeting excellent DC accuracy, AC performance, noise and output drive specifications. Operation is guaranteed across the -40 °C to +125 °C temperature range.

The ISL28168 and ISL28268 are micro-power operational amplifiers optimized for single supply operation over a power supply range of 2. 4VDC to 5. 5VDC. These devices draw minimal supply current and operate rail-to-rail at the input and output, while providing excellent DC-accuracy, noise and output drive specifications. Competing devices seriously degrade these parameters to achieve micro-power supply current. The parts feature an Input Range Enhancement Circuit (IREC), which enables them to maintain CMRR performance for input voltages greater than the positive supply. The input signal is capable of swinging 0. 25V above the positive supply and to 100mV below the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail. The 1/f corner of the voltage noise spectrum is at 100Hz. This results in low frequency noise performance, which can only be found on devices with an order of magnitude higher supply current. ISL28168 and ISL28268 can be operated from one lithium cell or two Ni-Cd batteries. The ISL28168 contains an enable pin feature that allows the device to be shutdown when not in use.

The ISL28270 and ISL28273 are dual channel micropower instrumentation amplifiers (in-amps) and the ISL28470 is a quad channel in-amp optimized for single supply operation over the +2. 4V to +5. 5V range. All three devices feature an Input Range Enhancement Circuit (IREC) which maintains CMRR performance for input voltages equal to the positive supply and down to 50mV above the negative supply rail. The input signal is capable of swinging above the positive supply rail and to 10mV above the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail. The ISL28273 is compensated for a minimum gain of 10 or more. For higher gain applications, the ISL28270 and ISL28470 are compensated for a minimum gain of 100. The in-amps have bipolar input devices for best offset and excellent 1/f noise performance. The amplifiers can be operated from one lithium cell or two Ni-Cd batteries.

The ISL28288 is a dual channel micropower operational amplifier optimized for single supply operation over the 2.4V to 5.5V range. It can be operated from one lithium cell or two NiCd 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 to 100mV below the negative supply. The output operation is rail-to-rail. The ISL28288 draws minimal supply current while meeting excellent DC accuracy, AC performance, noise, and output drive specifications. The ISL28288 (10 Ld MSOP only) contains a power-down enable pin that reduces the power supply current to typically less than 4µA in the disabled state. For equivalent performance in a single channel op amp, reference EL8188.

The ISL28290 is a dual ultra-low noise, ultra-low distortion operational amplifier that is fully specified to operate down to +3V single supply. The amplifier has outputs that swing rail-to-rail, and an input common mode voltage that extends below ground (ground sensing). The ISL28290 is unity gain stable with an input referred voltage noise of 1nV/√Hz. The part features 0.00017% THD+N at 1kHz. The ISL28290 is available in 10-lead UTQFN (1.8mm x 1.4mm), 10-lead MSOP, and 8-lead SOIC packages. Device operation is guaranteed over -40 °C to +125 °C.