AN-1146: ADIS16334 Mounting/Mechanical Design Guidelines and Examples

Mark Looney 著者 PDFをダウンロード

Introduction

The ADIS16334 is a low profile, fully calibrated, MEMS inertial measurement units (IMU). Figure 1 provides a top view of this package, which provides four mounting holes, with recessed mounting shelves that help manage the overall height of the attachment hardware. The mounting holes provide enough clearance for M2 × 0.4 mm or 2 to 56 machine screws.

Figure 1. ADIS16334AMLZ, Top View.

Figure 1. ADIS16334AMLZ, Top View.

Figure 2 provides a bottom view of this package. Notice that the substrate, which supports the internal sensors, extends beyond the bottom of the aluminum housing.

Figure 2. ADIS16334AMLZ, Bottom View.

Figure 2. ADIS16334AMLZ, Bottom View.

Mating Connector

The electrical connector is a dual-row, 1 mm pitch header that has 20 conductors. ADIS16334 evaluation tools use a part from Samtec’s CLM-110-2 family, as the mating connector. Refer to the ADIS16334 data sheet for more details.

Connector-up Mounting

Figure 3 provides an example of using a connector-up mounting approach. Figure 4 provides some mechanical design information for this approach when using the flexible cable that comes with the ADIS16334/PCBZ.

Figure 3. Connector-Up Example.

Figure 3. Connector-Up Example.

Figure 4. Connector-Up Mounting Example.

Figure 4. Connector-Up Mounting Example.

Connector-down Mounting

Connector-down mounting methods eliminate the need for a special flexible cable but require consideration of two additional features: the mounting bracket and the mounting surface. The example in Figure 5 uses a special mounting bracket that protects the substrate and spreads the mounting force across the bottom of the aluminum lid. Figure 6 and Figure 7 provide more details on the bracket design, which fits the edge of the aluminum housing and protects the substrate. Figure 8 provides a continuous printed circuit board (PCB) design example, while Figure 9, Figure 10, and Figure 11 provide an example design for mounting this to a system bulkhead.

Figure 5. Connector-Down Mounting Example.

Figure 5. Connector-Down Mounting Example.

Figure 6. ADIS1633x/BRACKET, Physical Features.

Figure 6. ADIS1633x/BRACKET, Physical Features.

Figure 7. ADIS1633x/BRACKET, Design Details.

Figure 7. ADIS1633x/BRACKET, Design Details.

Figure 8. Connector-Down, Continuous PCB Mechanical Design.

Figure 8. Connector-Down, Continuous PCB Mechanical Design.

Figure 9. Connector-Down, Bulkhead Mounting Example.

Figure 9. Connector-Down, Bulkhead Mounting Example.

Figure 10. Bulkhead Mechanical Design Example.

Figure 10. Bulkhead Mechanical Design Example.

Figure 11. PCB Interface Design Example.

Figure 11. PCB Interface Design Example.

著者

Mark Looney

Mark Looney

Mark Looneyはアナログ・デバイセズ（ノースカロライナ州グリーンズボロ）のiSensor® アプリケーション・エンジニア。1998 年にアナログ・デバイセズに入社以来、センサー信号処理、高速 A/D コンバータ、DC/DC 電力変換を担当。ネバダ大学リノ校で電気工学の学士号（1994 年）および修士号（1995 年）を取得、数件の論文を発表。アナログ・デバイセズ入社以前は、車載電子機器およびトラフィック・ソリューションの企業 IMATS の創業を支援し、Interpoint Corporation にて設計に従事しました。