TLE2022AMD

Hi Vlad,

Yes, the TLE2022 can be used with a single supply up to 40 V, providing the input common-mode and output swing range are observed. Instead of them being referenced to zero volts, they will now be referenced to 20 V, or half of your supply voltage.

Regards, Thomas

PA - Linear Applications Engineering

Dear Thomas, thank you

Excuse me, I did not quite understand what is it mean: "Instead of them being referenced to zero volts, they will now be referenced to 20 V, or half of your supply voltage." ?  Can I use the same circuit for TLE2022? 2330.TL072 80mA.TSC

Hi Vlad,

When an operational amplifier is operated with dual supplies such as +/-15 V, or other equal supply levels, the input signal and ouput signals are referenced to 0V; the mid-supply voltage. When that same amplifier is powered by a single supply, the mid-supply voltage moves up to half the supply level. If the TLE2022 is powered by +40 V the mid-supply level moves up to +20 V. A signal source at the input of the amplifier would usually ride on a +20 V common-mode voltage to be at the mid-supply level. The output would then swing plus and minus, about this +20 V level.

The TLE2022 has a common-mode input voltage range that extends down to 0 V, so the input can be as low as 0 V when the supply is +40 V. The output has a limited swing range and Vol looks like it will limit within 700, or 800 mV of the negative supply rail; or, 700 to 800 mV above 0 V in this case. Therefore, the circuit you have shown in TINA will only start operating linearly once the output moves above 700 to 800 mV.

Regards, Thomas

PA - Linear Applications Engineering

Dear Thomas,

Thank you.

Sincerely,

Vladimir Naumenkov

www.agat.by