STMicroelectronics TSV781 & TSV782

The TSV78x is a 30 MHz-bandwidth unity-gain-stable amplifier. The rail-to-rail input stage and the slew rate of 20 V/µs make the TSV78x ideal for low-side current measurement.

The TSV78x can operate from 2.0 V to 5.5 V single supply and it is fully specified on a load of 47 pF, therefore allowing easy usage as A/D converters input buffer. The TSV78x series offers rail-to-rail input and output, excellent speed/power consumption ratio, and 30 MHz gain bandwidth product, while consuming just 3.3 mA at 5 V.

The devices also feature an ultra-low input bias current that enables connection to photodiodes and other sensors where current is the key value to be measured.

These features make the TSV78x series ideal for high-accuracy, high-bandwidth sensor interfaces.

Features

• Gain bandwidth product 30 MHz, unity gain stable
• Slew rate 20 V/µs
• Low input offset voltage 50 µV typ., 400 µV max. for TSV781, 200 µV max. for TSV782
• Low input bias current: 2 pA typ.
• Low input voltage noise density 7 nV/√Hz @ 10 kHz
• Wide supply voltage range: 2.0 V to 5.5 V
• Rail-to-rail input and output
• Extended temperature range: -40 °C to +125 °C
• Automotive grade version available
• Benefits:
  • Accuracy of measurement virtually unaffected by noise or input bias current
  • Signal conditioning for high frequencies

Applications

• High bandwidth low-side and high-side current sensing
• Photodiode transimpedance amplification
• A/D converters input buffers
• Power management in solar-powered systems
• Power management in HEV and EV