 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
ADIS16488A Datasheet(PDF) 16 Page - Analog Devices |
|
|
|||||||||||||||||||||||||||||
ADIS16488A Datasheet(HTML) 16 Page - Analog Devices |
|
|
16 / 35 page  Product Overview Online Documentation Design Resources Discussion Sample & Buy ADIS16488A Data Sheet Rev. C | Page 16 of 35 ACCELERATION The registers that usethe x_ACCL_OUT format aretheprimary registers for the accelerometermeasurements (seeTable18, Table 19, and Table 20). When processing datafromthese registers, use a 16-bit, twos complement dataformat. Table21 provides x_ACCL_OUTdigital coding examples. Table 18. X_ACCL_OUT (Page 0, Base Address = 0x1E) Bits Description [15:0] X-axis accelerometer data; twos complement, ±18 g range, 0 g = 0x0000, 1 LSB = 0.8 mg Table 19. Y_ACCL_OUT (Page 0, Base Address = 0x22) Bits Description [15:0] Y-axis accelerometer data; twos complement, ±18 g range, 0 g = 0x0000, 1 LSB = 0.8 mg Table 20. Z_ACCL_OUT (Page0, Base Address = 0x26) Bits Description [15:0] Z-axis accelerometer data; twos complement, ±18 g range, 0 g = 0x0000, 1 LSB = 0.8 mg Table 21. x_ACCL_OUT Data FormatExamples Acceleration Decimal Hex Binary +18 g +22,500 0x57E4 0101 0111 1110 0100 +1.6 mg +2 0x0002 0000 0000 0000 0010 +0.8 mg +1 0x0001 0000 0000 0000 0001 0 mg 0 0x0000 0000 0000 0000 0000 −0.8 mg −1 0xFFFF 1111 1111 1111 1111 −1.6 mg −2 0xFFFE 1111 1111 1111 1110 −18 g −22,500 0xA81C 1010 1000 0001 1100 The registers that usethe x_ACCL_LOWnamingformat provide additional resolution for the accelerometer measurements (see Table 22, Table23, and Table24). The MSBhas a weightof 0.4mg, and each subsequent bit has ½ the weight of the previous one. Table 22. X_ACCL_LOW (Page0, Base Address = 0x1C) Bits Description [15:0] X-axis accelerometer data; additional resolution bits Table 23. Y_ACCL_LOW(Page 0, Base Address = 0x20) Bits Description [15:0] Y-axis accelerometer data; additional resolutionbits Table 24. Z_ACCL_LOW(Page0, Base Address = 0x24) Bits Description [15:0] Z-axis accelerometer data; additional resolution bits DELTA ANGLES The x_DELTANG_OUTregistersaretheprimaryoutput registers for the delta anglecalculations. Whenprocessing datafromthese registers, usea 16-bit, twoscomplement dataformat(seeTable25, Table 26, and Table 27). Table 28 provides x_DELTANG_OUT digital coding examples. The delta angle outputsrepresent an integration of the gyro- scope measurementsanduse thefollowingformulafor all three axes (x-axis displayed): ( ) ∑ − = − + + + × = ∆ 1 0 1 , , , 2 1 D d d D n x d D n x S D n x f ω ω θ where: D is the decimation rate = DEC_RATE+ 1. fsis the sample rate. d is the incremental variable in the summation formula. ωx is the x-axis rate of rotation (gyroscope). n is the sample time, prior to the decimation filter. When using the internal sampleclock, fS is equal to 2460 SPS. When using theexternal clockoption, fS is equal to thefrequency of the external clock, which is limited to a minimum of 2 kHz, to prevent overflowin the x_DELTANG_xxx registers at high rotation rates. See Table56 and Figure 20 for moreinformation on the DEC_RATEregister(decimationfilter). The x_DELTANG_LOWregisters(seeTable29, Table30, and Table 31)provide additional resolutionbits forthedeltaangleand combinewiththex_DELTANG_OUT registersto providea 32-bit, twos complement number. The MSBin the x_DELTANG_LOW registershavea weightof~0.011°(720°/216), andeach subsequent bit carries a weight of ½ of the previous one. Table 25. X_DELTANG_OUT (Page 0, Base Address = 0x42) Bits Description [15:0] X-axis delta angle data; twos complement, ±720° range, 0° = 0x0000, 1 LSB = 720°/215 = ~0.022° Table 26. Y_DELTANG_OUT (Page0, Base Address = 0x46) Bits Description [15:0] Y-axis delta angle data; twos complement, ±720° range, 0° = 0x0000, 1 LSB = 720°/215 = ~0.022° Table 27. Z_DELTANG_OUT (Page 0, Base Address = 0x4A) Bits Description [15:0] Z-axis delta angle data; twos complement, ±720° range, 0° = 0x0000, 1 LSB = 720°/215 = ~0.022° Table 28. x_DELTANG_OUT Data FormatExamples Angle (°) Decimal Hex Binary +720 × (215 − 1)/215 +32,767 0x7FFF 0111 1111 1110 1111 +1440/215 +2 0x0002 0000 0000 0000 0010 +720/215 +1 0x0001 0000 0000 0000 0001 0 0 0x0000 0000 0000 0000 0000 −720/215 −1 0xFFFF 1111 1111 1111 1111 −1440/215 −2 0xFFFE 1111 1111 1111 1110 −720 −32,768 0x8000 1000 0000 0000 0000 Table 29. X_DELTANG_LOW(Page 0, Base Address = 0x40) Bits Description [15:0] X-axis delta angle data; additional resolution bits |
Similar Part No. - ADIS16488A |
|
Similar Description - ADIS16488A |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
