As I look at the Datasheet of a differential amplifier for input impedance, i see below statement. enter image description here

0.8||2 for Differential. 0.4||2 for Common mode.

What does GΩ||pF mean?

  • \$\begingroup\$ I'd assume Gigohms in parallel with picofarads - the input looks like a high value resistor in parallel with a tiny capacitor. \$\endgroup\$ Commented Nov 27, 2015 at 2:06

1 Answer 1


Input resistance, expressed in GigaOhms; in parallel with stray capacitance, expressed in PicoFarads


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