The HSP43216 Halfband Filter is a halfband filter manufactured by ADI. It can process 16-bit data with a maximum data rate of 52MSPS. When used with an external multiplexer or demultiplexer, the processing throughput of the part can be easily doubled to 104MSPS.
The HSP43216 is a halfband filter processor that can be configured for four modes: decimate‑by‑2, interpolate‑by‑2, quadrature down‑conversion with decimation, and quadrature‑to‑real conversion. It processes 16‑bit data streams at sample rates up to 52 MSPS, or up to 104 MSPS when an external multiplexer is used.
Key features include a 67‑tap FIR filter with 20‑bit coefficients, >90 dB stopband attenuation, 0.0003 dB passband ripple, programmable rounding from 8‑ to 16‑bits, and selectable output format (two’s complement or offset binary). The device is offered in PLCC‑84 and MQFP‑100 packages and operates from 0 °C to +70 °C.
| Maximum Sample Rate | 52 MSPS (104 MSPS with external multiplexer) |
|---|---|
| Input/Output Word Width | 16‑bits |
| Filter Tap Count | 67‑tap FIR |
| Coefficient Bit Width | 20‑bit |
| Stopband Attenuation | >90 dB |
| Passband Ripple | <0.0003 dB |
| Filter Shape Factor | 1.241 |
| Output Rounding Options | 8‑ to 16‑bits |
The device can operate in Decimate‑by‑2, Interpolate‑by‑2, Quadrature Down‑Convert with Decimate, and Quadrature‑to‑Real Conversion modes.
The RNDO‑2 inputs select the output precision, allowing rounding to any width from 8‑bits up to 16‑bits.
The HSP43216 processes data streams up to 52 MSPS on its internal path.