Method and circuit for trimming offset and temperature drift

A amplifier circuit configured for reduced offset and temperature drift, said amplifier circuit comprising:

• a temperature-dependent current source configured for providing a current signal, said temperature-dependent current source configured to be trimmed to a first value at a first temperature;
• a device comprising at least one control input terminal and a control output terminal, said device having an output parameter configured at said control output terminal, said output parameter configured to be trimmed to a desired value at the first temperature;
• and
• a current switch circuit coupled between said temperature-dependent current source and said at least one control input terminal of said device, said current switch circuit configured to provide said current signal from said temperature-dependent current source to trim said output parameter of said device at a second temperature.

A method for trimming offset and temperature drift in an electrical device, said method comprising the steps of:

• trimming at a first temperature an output parameter of the electrical device to a desired value;
• trimming at the first temperature a temperature-dependent current source to a first value;
• and
• providing current signal from said temperature-dependent current source to facilitate trimming at a second temperature the output parameter of the electrical device to the desired value.