công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
ADMP421BCEZ-RL bảng dữ liệu(PDF) 10 Page - Analog Devices |
|
ADMP421BCEZ-RL bảng dữ liệu(HTML) 10 Page - Analog Devices |
10 / 17 page Data Sheet ADMP421 Rev. D | Page 9 of 16 ALTERNATE PCB LAND PATTERNS The ADMP421’s standard PCB land pattern has a solid ring around the edge of the footprint, which may make routing the microphone signals more difficult in some board designs. This ring is used to improve the RF immunity performance of the ADMP421, but it is not necessary to have this full ring connected for electrical functionality. If a design can tolerate reduced RF immunity then this ring can either be broken or removed completely from the PCB footprint. Figure 10 shows an example land pattern with no enclosing ring around the edge of the part, and Figure 11 shows an example pattern with the ring broken on two sides so that the inner pads can be more easily routed on the PCB. Figure 10. Example PCB Land Pattern with No Enclosing Ring Figure 11. Example PCB Land Pattern with Broken Enclosing Ring Note that in both of these patterns, the solid ring around the sound port is still present; this ring is needed to ground the microphone and for acoustic performance. The pad on the package connected to this ring is ground and still needs a solid electrical connection to the PCB ground. If a pattern like one of these two examples is used on a PCB, take care that the unconnected ring on the bottom of the ADMP421 is not placed directly over any exposed copper. This ring on the microphone is still at ground and any PCB traces routed underneath it need to be properly masked to avoid short circuits. |
Số phần tương tự - ADMP421BCEZ-RL |
|
Mô tả tương tự - ADMP421BCEZ-RL |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |