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參數(shù)資料
| 型號： | ADMP421BCEZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 16/16頁 |
| 文件大小： | 0K |
| 描述： | MIC MEMS OMNI-DIR DGTL 5LGA |
| 標(biāo)準(zhǔn)包裝： | 5,000 |
| 系列： | ADMP421 |
| 類型： | MEMS（硅） |
| 輸出類型： | 數(shù)字，PDM |
| 方向： | 全向 |
| 頻率范圍： | 100Hz ~ 15kHz |
| 靈敏度： | -26dB ±3dB |
| 信噪比： | 61dB |
| 電壓 - 額定： | 1.8 ~ 3.3V |
| 電流 - 電源： | 650µA |
| 端口位置： | 底部 |
| 密封等級： | 無 |
| 端子： | 表面貼裝型 |
| 尺寸/尺寸： | 4.00mm L x 3.00mm W |
| 高度（最大）： | 1.10mm |
| 形狀： | 矩形 |
| 包裝： | 帶卷 (TR) |
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.
07596-
0
1
Figure 10. Example PCB Land Pattern with No Enclosing Ring
07596-
012
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.
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| ADMP421BCEZ-RL7 | 功能描述:MIC MEMS OMNI-DIR DGTL 5LGA RoHS:是 類別:音頻產(chǎn)品 >> 麥克風(fēng) 系列:ADMP421 產(chǎn)品目錄繪圖:SPM04xxHx(5,xH)-xB SP Series_FTPRNT-5 標(biāo)準(zhǔn)包裝:1 系列:SiSonic™ 類型:MEMS（硅） 輸出類型:模擬 方向:全向 頻率范圍:100Hz ~ 10kHz 靈敏度:-42dB ±3dB 信噪比:59dB 阻抗:100 歐姆 電壓 - 額定:1.5 ~ 3.6V 電流 - 電源:250µA 端口位置:頂部 密封等級:無 端子:表面貼裝型 尺寸/尺寸:4.72mm L x 3.76mm W 高度（最大）:1.35mm 形狀:矩形 包裝:Digi-Reel® 產(chǎn)品目錄頁面:2669 (CN2011-ZH PDF) 其它名稱:423-1131-6 |
| ADMP421X | 制造商:Analog Devices 功能描述: |
| ADMP441 | 制造商:Analog Devices 功能描述:MIC MEMS OMNI-DIR 9LGA 制造商:Analog Devices 功能描述:MIC, MEMS, OMNI-DIR, 9LGA |
| ADMP441_1209 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Omnidirectional Microphone with Bottom Port and I2S Digital Output |
| ADMP441ACEZ | 制造商:Analog Devices 功能描述:MIC, MEMS, OMNI-DIR, 9LGA; Supply Voltage Range:1.8V to 3.3V; Control Interface:Serial; Audio IC Case Style:LGA; No. of Pins:9; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 5 - 48 hours; SVHC:No SVHC ;RoHS Compliant: Yes 制造商:Analog Devices 功能描述:MIC, MEMS, OMNI-DIR, 9LGA; Supply Voltage Range:1.8V to 3.3V; Control Interface:Serial; Audio IC Case Style:LGA; No. of Pins:9; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:-; SVHC:No SVHC (19-Dec-2012); ;RoHS Compliant: Yes |
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