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Summary of Contents for Qorvo QM98000
- Page 1 QM98000 DIGITAL SENSOR PRODUCT BRIEF Revision C QM98000 PRODUCT BRIEF Rev C P a g e...
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Page 2: Table Of Contents
ASSEMBLY INSTRUCTIONS ........................12 11.5 PACKAGING INFORMATION LASER MARK ................... 13 11.6 SENSOR TOP MARK CODING ........................ 14 11.7 TAPE-AND-REEL (T&R) DETAILS/DIMENSIONS ..................14 RELIABILITY & ENVIRONMENTAL INFORMATION .....................15 REVISION HISTORY ..............................16 QM98000 PRODUCT BRIEF Rev C P a g e... -
Page 3: General Description
1. GENERAL DESCRIPTION The QM98000 digital sensor is the world’s most sensitive sensor, a 10x improvement over our previous generation digital sensors. Force is easily detected through thicker and stiffer materials. The digital output allows a direct connection to a host processor via an industry standard I²C interface. -
Page 4: Ordering Information
THR_ADR See sections 9.3 and 9.5 respectively for setting device address and threshold. INTB Interrupt Output. This pin allows the QM98000 to wake-up the host. Serial Clock Input. Serial I C clock input connecting the master clock. Serial Data I/O. Serial I C data pin allowing communications to/from the master. -
Page 5: Absolute Maximum Ratings
8.1 TYPICAL OPERATING CIRCUIT Figure 2 shows a typical circuit for a button application utilizing the QM98000. The sensor generates an interrupt when the programmed threshold is exceeded. The host processor can change the threshold by writing to the sensor registers using the I C interface. -
Page 6: Digital Interface - I 2 C Slave Communications And Interrupts
8.2 POWER-UP SEQUENCE The QM98000 will be fully operational 10 ms after power is initially applied to the chip. After power-up, it enters active mode by default, see Figure 3. VDD needs to meet 90% of nominal value within 2 ms after power up for correct operation. -
Page 7: Solution Stack-Up
The device is soldered onto a PCB, which is then bonded to the back of the surface where the force is to be detected. The QM98000 digital sensor can detect forces as light as a few grams. Figure 4 shows the stack-up for a single button application utilizing one sensor mounted to a PCB. - Page 8 Figure 5-a: Recommended Design/Layout Practice Figure 5-b: Avoid in Layout/Routing QM98000 PRODUCT BRIEF Rev C P a g e...
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Page 9: Footprint And Smt Details
11.1 FOOTPRINT AND SMT DETAILS Figure 6: Must-Have Footprint Figure 6 depicts the must-have footprint drawing for the QM98000 and the details below must be followed for the SMT of the sensor onto a PCB/FPCB 1. Pad dimensions and type Rounded rectangle with dimensions 7.874 mil x 7.874 mil (0.2 mm x 0.2 mm) -
Page 10: Smt Pick & Place Guidelines
The tip should account for the tolerance of the pick accuracy, so that it’s not possible for the nozzle tip to contact the edge or the corner of a part. The tip size should be as large as possible, while satisfying the above 2 points. QM98000 PRODUCT BRIEF Rev C 10 | P a g e... -
Page 11: Pick & Place Operation
2 N (200 gram). Placement forces should be measured periodically using a calibrated load, to ensure parts aren’t placed with a force over this specification. QM98000 PRODUCT BRIEF Rev C 11 | P a g e... -
Page 12: Assembly Instructions
11.4 ASSEMBLY INSTRUCTIONS The QM98000 can be reflow-soldered using direct-chip-attachment (DCA) techniques to the circuit substrate (e.g. FR-4 or FPC). The chip should be soldered at normal reflow (Table 4) temperatures designed to support RoHS and Pb-free compliance (Figure 8). Reflow assembly houses should follow this profile closely but can chose more conservative ramp-up/down rates. -
Page 13: Packaging Information Laser Mark
Pin 1 ID diameter All dimensions are in mm unless otherwise specified; dimensions and tolerances conform to ANSI Y14.5M-1982. Table 5: Package Dimensions For Must have footprint see Figure 6. QM98000 PRODUCT BRIEF Rev C 13 | P a g e... -
Page 14: Sensor Top Mark Coding
The top mark coding consists of 3 rows of letters and numbers printed on the top of the CSP package (Figure 10). Figure 10: Top Mark 11.7 TAPE-AND-REEL (T&R) DETAILS/DIMENSIONS Figure 11: Tape-and-Reel Dimensions Note that all dimensions and tolerances in this tape-and-reel diagram (Figure 11) are in mm. QM98000 PRODUCT BRIEF Rev C 14 | P a g e... -
Page 15: Reliability & Environmental Information
Figure 12: Example of Packaged Reel 12. RELIABILITY & ENVIRONMENTAL INFORMATION The QM98000 meets Level 1 (unlimited) Moisture Sensitivity Level (MSL) specifications. Reliability and Environmental reports are furnished upon request. QM98000 PRODUCT BRIEF Rev C... -
Page 16: Revision History
PAGES CHANGED NUMBER 05/11/2022 New Release N / A 12/09/2022 New release per RevC of full data sheet 06/02/2023 Sensor module image replaced. Traces’ width info. 7, 8 updated. QM98000 PRODUCT BRIEF Rev C 16 | P a g e...
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