LPV542 Dual Nanopower Operational Amplifiers

By Texas Instruments 81

LPV542 Dual Nanopower Operational Amplifiers

Texas Instruments' LPV542 are ultra-low-power, dual operational amplifiers that provide 8 kHz of bandwidth from 490 nA of quiescent current. This makes them well suited for battery-powered applications such as health and fitness wearables, building automation, and remote sensing nodes.

Each amplifier has a CMOS input stage with pico-amp bias currents which reduces errors commonly introduced in megaohm feedback resistance topologies, such as photodiode and charge sense applications. In addition, the input common-mode range extends to the power supply rails and the output swings to within 3 mV of the rails, maintaining the widest dynamic range possible. Likewise, EMI protection is designed into the LPV542 in order to reduce system sensitivity to unwanted RF signals from mobile phones, Wi-Fi, radio transmitters, and tag readers.

The LPV542 operate on a supply voltage as low as 1.6 V, ensuring continuous superior performance in low battery situations. The devices are available in an 8-pad, low-profile, leadless 3 mm × 3 mm × 0.45 mm X1SON package and a standard 8-pin VSSOP.

  • Wide supply range: 1.6 V to 5.5 V
  • Low supply current: 490 nA (typ/channel)
  • Good offset voltage: 3 mV (max/room)
  • Good TcVos: 1 µV/°C (typ)
  • Gain-bandwidth: 8 kHz (typ)
  • Rail-to-rail input and output
  • Unity-gain stable
  • Low input bias current : 1 pA (typ)
  • EMI hardened
  • Temperature range: -40°C to 125°C
  • Thin 3 mm × 3 mm × 0.45 mm X1SON package