Date: 12/05/2009

New op amp from Intersil offers high-gain accuracy with zero drift

Intersil has released a new operational amplifier ISL28133. This is a low power, zero drift, rail-to-rail input and output op amp for 16-bit and 24-bit applications. ISL28133 operates from a single 1.65 to 5V range power supply making it suitable for battery operated portable systems. ISIL28133 uses chopper-stabilized design to achieve high-gain accuracy with zero drift at low power.
ISL28133 is suggested for process control or industrial equipment, portable medical systems, data acquisition products, diagnostic systems, or any applications requiring extremely high accuracy for sensor frontends with limited power consumption budgets.

The key features and technical spec of this device are,

1. Input offset voltage: 8µV
2. Output noise: 1.1µV peak-peak
3. Typical temperature drift of 20 nano-volts per degree/Celsius (nV/°C.
4. Offset drift: 0.075µV/oC maximum
5. Current consumption: 25µA (max)
6. Input bias current: 300pA maximum.
7. Operating temperature range: -40°C to +125°C.

Additional applications include low ohmic current sensing that are common in power supply and safety monitors where accuracy at high gain is critical.

Package: 5 Lead SOT-23
Availability: Now
Price: Each $0.99 for1K pieces.