{{tag>collection_az vendor_semtech year_2006 type_analog type_analog/rf foundry_umc tech_180nm}} ISM-band RF transmitter IC (no RX capability). Bare bones with minimal modulation etc support. ====== Package ====== 8-pin DFN. {{:azonenberg:semtech:sx1243_package.jpg|}} Markings: NR3 XF 138 ====== Die ====== Size is approximately FIXME x FIXME μm (FIXME mm2) {{:azonenberg:semtech:sx1243_mz_mit20x.jpg?600|}} Mask rev markings (focus stack of several images). Looks like 6 metal layers total. {{:azonenberg:semtech:sx1243-layer-ids.jpg?600|}} Random logic showing classic UMC 180nm CMP fill pattern {{:azonenberg:semtech:sx1243-random-logic.jpg?600|}}