Track and Hold

Operator Menu Location: Signal Conditioning

Operator Bitmap:

Functional Description:
The Track & Hold operator has an analog input x, a digital input b, and an analog output y. While input b is LOW, output y tracks input x (i.e., y(t)=x(t)). When input b switches to HIGH, y will thereafter hold the value of x at that instant. In other words, the operator output is defined by

where is the time instant that b switched to the hold state (b=HIGH).

User-Defined Properties:
Object Name. A string label that identifies the operator

Comments:
The operator output may be discontinuous when switching from the hold condition to the track condition.

See Also:
A/B Switch