Driving chip and display apparatus

A driver chip, comprising:

• a digital signal generator;
• an analog signal generator which comprises a reference voltage source and a Gamma voltage generation circuit, wherein an output terminal of the reference voltage source is electrically connected to an input terminal of the Gamma voltage generation circuit, and the Gamma voltage generation circuit is configured to generate a Gamma voltage according to a reference voltage outputted by the reference voltage source;
• and
• a decoupling capacitor, wherein the decoupling capacitor is connected between the digital signal generator and the output terminal of the reference voltage source,
• wherein the reference voltage source comprises an operational amplifier, a first voltage generation circuit, a first voltage dividing circuit, a second voltage generation circuit and a second voltage dividing circuit, and the first voltage generation circuit and the second voltage generation circuit are configured to generate voltage amounts having opposite temperature coefficients;
• wherein an output terminal of the first voltage generation circuit is electrically connected to a first terminal of the first voltage dividing circuit, a second terminal of the first voltage dividing circuit is electrically connected to a non-inverting input terminal of the operational amplifier, and a third terminal of the first voltage dividing circuit is electrically connected to an output terminal of the operational amplifier;
• wherein an output terminal of the second voltage generation circuit is electrically connected to a first terminal of the second voltage dividing circuit, a second terminal of the second voltage dividing circuit is electrically connected to an inverting input terminal of the operational amplifier, and a third terminal of the second voltage dividing circuit is grounded;
• and
• wherein the output terminal of the operational amplifier is electrically connected to the input terminal of the Gamma voltage generation circuit.