ZHCSPA6F September 2006 – January 2022
PRODUCTION DATA
The BQ2022A only has one signal (SDQ). Best practice is to route the signal trace directly from the SDQ pin of BQ2022A to the external connector of the application system or to host SDQ master device. Signal trace should be shielded properly with a parallel ground plane. If possible use two vias per VSS pin to reach the ground plane Figure 10-1. If a full ground plane is not available to the BQ2022A, then try to connect both VSS pins with a large trace surrounding most of the device and have a trace leaving the VSS pin that is adjacent to SDQ pin so that it follows the SDQ trace back to the SDQ master interface pins Figure 10-2.