MMA2260D MOTOROLA | Alldatasheet

Document overview

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Technical content

Features

  • Integral Signal Conditioning
  • High Sensitivity
  • Linear Output
  • 2nd Order Bessel Filter
  • Calibrated Self- -test
  • EPROM Parity Check Status
  • Transducer Hermetically Sealed at Wafer Level for Superior Reliability
  • Robust Design, High Shock Survivability Typical Applications
  • Tilt Monitoring
  • Inclinometers
  • Appliance Control
  • Mechanical Bearing Monitoring
  • Vibration Monitoring and Recording
  • Sports Diagnostic Devices and Systems
  • Trailer Brake Controls
  • Automotive Aftermarket

ORDERING INFORMATION

Device Temperature Range Case No. Package MMA2260D - -40 to +105°C Case 475- -01 SOIC- -16 MMA2260DR2 - -40 to +105°C Case 475- -01 SOIC- -16, Tape & Reel G- -CELL SENSOR INTEGRATOR GAIN FILTER TEMP COMP &G A I N SELF- -TEST CONTROL LOGIC & EPROM TRIM CIRCUITS CLOCK GEN.OSCILLATOR VDD VOUT VSS ST Figure 1. Simplified Accelerometer Functional Block Diagram

16 LEAD SOIC

Freescale Semiconductor, Inc.

Motorola Sensor Device DataMMA2260D MAXIMUM RATINGS(Maximum ratings are the limits to which the device can be exposed without causing permanent damage.) Rating Symbol Value Unit Unpowered Acceleration (all axes) gupd 2000 g Supply Voltage VDD - - 0 . 3t o+ 7 . 0 V Drop Test(1) Hdrop 1.2 m Storage Temperature Range Tstg - -40 to +125 °C NOTES: 1. Dropped onto concrete surface from any axis. ELECTRO STATIC DISCHARGE (ESD) WARNING: This device is sen sitive to electrostatic discharge. Although the Motorola accelerometers contain internal 2000V ESD protection circuitry, extra precaution must be taken by the user to protect the chip from ESD. A charge of over 2000 volts can accumulate on the human body or asso- ciated test equipment. A chargeof this magnitude can alter the performance or cause failure of the chip. When handling the accelerometer, proper ESD precautions should be fol- lowed to avoid exposing the device to discharges which may be detrimental to its performance. Freescale Sem iconductor, I Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com nc...

Motorola Sensor Device Data MMA2260D OPERATING CHARACTERISTICS (Unless otherwise noted: - -40°C ≤ TA ≤ +105°C, 4.75≤ VDD ≤ 5.25, Acceleration = 0g, Loaded output(1)) Characteristic Symbol Min Typ Max Unit Operating Range(2) Supply Voltage(3) Supply Current Operating Temperature Range Acceleration Range VDD IDD TA gFS 4.75 1.1 −40 5.00 2.2 1.5 5.25 3.2 +105 V mA g Output Signal Z e r og( VDD =5 . 0V )(4) Sensitivity (TA =2 5°C, VDD =5 . 0V )(5) Sensitivity (VDD =5 . 0V )(5) Bandwidth Response Nonlinearity VOFF S S f- -3dB NLOUT 2.3 1140 1110 −1.0 2.5 1200 1200 2.7 1260 1290 +1.0 V mV/g mV/g Hz %F S O Noise RMS (0.1 Hz - - 1.0 kHz) Spectral Density (RMS, 0.1 Hz - - 1.0 kHz)(6) nRMS nSD 3.5 350 mVrms µg/√Hz Self- -Test Output Response (VDD =5 . 0V ) Input Low Input High Input Loading(7) Response Time(8) ∆VST VIL VIH IIN tST 0.3 VSS

0.7 VDD

−50 0.4 −125 0.5

0.3 VDD

−300 V V V µA ms Status(12)(13) Output Low (Iload = 100µA) Output High (Iload = - -100µA) VOL VOH VDD −0.8 0.4 V V Output Stage Performance Electrical Saturation Recovery Time(9) Full Scale Output Range (IOUT = - -200µA) Capacitive Load Drive(10) Output Impedance tDELAY VFSO CL ZO VSS+0.25 2.0 VDD−0.25 100 ms V pF Ω Mechanical Characteristics Transverse Sensitivity(11) VYX,ZX — — 5.0 %F S O NOTES: 1. For a loaded output the measurements are observed after an RC filter consisting of a 1 kΩ resistor and a 0.1µF capacitor to ground. 2. These limits define the range of operation for which the part will meet specification. 3. Within the supply range of 4.75 and 5.25 volts, the device operates as a fully calibrated linear accelerometer. Beyond these supply limits the device may operate as a linear device but is not guaranteed to be in calibration. 4. The device can measure both + and−acceleration. With no input acceleration the outputis at midsupply. For positive acceleration the output will increase above VDD/2 and for negative acceleration the output will decrease below VDD/2. 5. Sensitivity limits apply to 0 Hz acceleration. 6. At clock frequency≅ 34 kHz. 7. The digital input pin has an internal pull- -down current source to prevent inadvertent self test initiationdue to external board level leakages. 8. Time for the output to reach 90% of its final value after a self- -test is initiated. 9. Time for amplifiers to recover after an acceleration signal causing them to saturate. 10. Preserves phase margin (60°) to guarantee output amplifier stability. 11. A measure of the device’s ability to reject an acceleration applied 90° from the true axis of sensitivity. 12. The Status pin output is not valid following power- -up until at least one rising edge has been applied to the self- -test pin. The Status pin is high whenever the self- -test input is high. 13. The Status pin output latches high if the EPROM parity changes to odd. The Status pin can be reset by a rising edge on self- -test, unless a fault condition continues to exist. Freescale Sem iconductor, I Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com nc...

integrated- -circuit accelerometer. ing a bulk micromachined “cap’’ wafer. distance between the beams, and N is the number of beams. metric and proportional to acceleration. Figure 2. Simplified Transducer Physical Model set the cut- -off frequency. sections of the accelerometer are functioning.

  • Parity of the EPROM bits becomes odd in number. The fault latch can be reset by a rising edge on the self- - test input pin, unless one (or more) of the fault conditions continues to exist. Freescale Sem iconductor, I Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com nc...

Figure 3. Pinout Description VSS and may be left unconnected. 4 VOUT Output voltage of the accelerometer. 5 STATUS Logic output pin used to indicate fault. 6 VDD The power supply input. 7 VSS The power supply ground.

8 ST Logic input pin used to initiate self- -

9t h r u1 3Trim pins Used for factory trim. 14 thru 16 — No internal connection. Figure 4. SOIC Accelerometer with Recommended Figure 5. Recommended PCB Layout for Interfacing

  • U s ea0 . 1µF capacitor on VDD to decouple the power source.
  • Physical coupling distance of the accelerometer to the mi- crocontroller should be minimal.
  • Place a ground plane beneath the accelerometer to reduce noise, the ground plane should be attached to all internal VSS terminals shown in Figure 3.
  • U s ea nR Cf i l t e ro f1kΩand 0.1µF on the output of the ac- celerometer to minimize clock noise (from the switched capacitor filter circuit).
  • PCB layout of power and ground should not couple power supply noise.
  • Accelerometer and microcontroller should not be a high current path.
  • A/D sampling rate and any external power supply switching frequency should be selected such that they do not inter- fere with the internal accelerometer sampling frequency. This will prevent aliasing errors. Freescale Sem iconductor, I Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com nc...

Motorola Sensor Device DataMMA2260D * When positioned as shown, the Earth’s gravity will result in a positive 1g output Direction of Earth’s gravity field.* STATIC ACCELERATION +1g -- 1 g 0g 0g VOUT = 2.50V VOUT = 2.50V VOUT =3 . 7 V VOUT =1 . 3 V 16- -Pin SOIC Package +X - -X Top View DYNAMIC ACCELERATION Freescale Sem iconductor, I Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com nc...

Motorola Sensor Device Data MMA2260D PACKAGE DIMENSIONS CASE 475- -01 ISSUE B NOTES: 1. ALL DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSIONS ”A” AND ”B” DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.15 PER SIDE. 4. DIMENSION ”D” DOES NOT INCLUDE DAMBAR PROTRUSION. PROTRUSIONS SHALL NOT CAUSE THE LEAD WIDTH TO EXCEED 0.75 DIM MIN MAX MILLIMETERS A 10.15 10.45 B 7.40 7.60 C 3.30 3.55 D 0.35 0.49 F 0.76 1.14 G 1.27 BSC J 0.25 0.32 K 0.10 0.25 M 07 P 10.16 10.67 R 0.25 0.75 16 9 P

2 PLACES, 16 TIPS

A0.15 BT AM0.13 B T C K R X4 5_ J F M SEATING PLANE A B A B T G G/2 0.1 Freescale Sem iconductor, I Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com nc...

Motorola Sensor Device DataMMA2260D Information in this document is provided solely to enable system and software implementers to use Motorola products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits orintegrated circuits based on the information in this document. Motorola reserves the right to make changes withoutfurther notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any productor circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters that may beprovided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”, must be validated for each customer application by customer’s technical experts. Motorola does notconvey any licenseunder its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components insystems intended for surgical implant into thebody, or other applications intended to support or sustain life, or for any other application in which the failureof the Motorola product could create a situation where personal injury ordeathmay occur. ShouldBuyerpurchaseor useMotorola products forany such unintendedor unauthorizedapplication, Buyershall indemnify and holdMotorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury ordeath associated with such unintended orunauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. MOTOROLA and the Stylized M Logo are registered in the US Patent and Trademark Office. All other product or service names are the property of their respective owners. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. E Motorola Inc. 2003 HOW TO REACH US: USA/EUROPE/LOCATIONS NOT LISTED: JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, Motorola Literature Distribution 3- -20- -1, Minami- -Azabu, Minato- -ku, Tokyo 106- -8573, Japan P.O. Box 5405, Denver, Colorado 80217 81- -3- - 3440- -3569 1- -800- -521- -6274 or 480- -768- -2130 ASIA/PACIFIC: Motorola Semiconductors H.K.Ltd.; Silicon Harbour Centre, 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong 852- -26668334 HOME PAGE: http://motorola.com/semiconductors MMA2260D◊ Freescale Sem iconductor, I Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com nc...