TMC2242A Datasheet (Fairchild Semiconductor) - Digital Half-Band Interpolating/Decimating Filter

TMC2242A, Digital Half-Band Interpolating/Decimating Filter

The TMC2242A and TMC2242B are ﬁxed-coefﬁcient linear-phase half-band (low-pass) digital ﬁlters.

They can be used to halve or double the sampling rate of a digital signal.

When used as a decimating post-ﬁlter with a double-speed oversampling A/D converter, they greatly reduce the cost and complexity

TMC2242A Features

* TMC2242A and TMC2242B are pin-compatible with TMC2242

* User selectable interpolate gain, -6 dB or 0 dB (2242B)

* 30, 40 and 60 MHz speed grades

* User selectable 2:1 decimation, 1:2 interpolation, and equal-rate ﬁlter modes

* Passband ripple < ±0.01 dB