Error cancellation in a current digital-to-analog converter of a continuous-time sigma-delta modulator

Apparatus and methods for reducing noise and distortion in current digital-to-analog converters (IDACs) are described. Compensating capacitors may be connected to current sources in an IDAC. The compensating capacitors may be driven with signals derived from the output of the IDAC to cancel transient current spikes that would otherwise occur on the output of the IDAC. 本申请提供了种用于减少电流数模转换器(IDAC)的噪声和失真的装置和方法。补偿电容可以被连接到IDAC的电流源。补偿电容可以IDAC的输出得到的信号来驱动，以抵消将在IDAC的输出发生的瞬时电流尖峰。