The DLPF-GP-01D3 is an impedance-matched companion chip for the GreenPeak GP540 and GP561 RF4CE communication controllers. These controllers enable low-cost single-layer pc-board integration, supported by the DLPF-GP-01D3 pinning that allows short, straight tracks for signal, ground, and common connections between the two devices.
The two integrated filter channels provide high attenuation outside the 2400-2500 MHz frequency range and have low in-bandwidth insertion and return loss. ST has achieved this high performance, which helps designers meet the ZigBee RF4CE specifications, with its Integrated Passive Device (IPD) technology with non-conductive glass substrate for signal integrity.
By enabling a single-chip solution, the DLPF-GP-01D3 also simplifies circuit design and saves costs. The 1.2 x 3.4 mm footprint, and height of less than 560 μm after reflow, make this the smallest dual low-pass filter solution for the GreenPeak GP540 and GP561. The entire filter can now be built in less than 1/10th the pc-board space of a conventional discrete circuit, and the DLPF-GP-01D3, in an 11-bump flip-chip package, is priced from $0.23 (5000).