Precision Constant-Current Sink Provides Wide, Close-to-the-Rail Compliance

Abstract: This precision constant-current sink produces a current of 1mA with a compliance range of 0.7V to 50V, and a dynamic output impedance of 106 ohms. It is stable with any load type (resistive or reactive), and stable over the allowed ranges of temperature, power-supply voltage, and compliance voltage (upper and lower limits).