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| CMA3000-A01 Data Sheet CMA3000-A01 3-AXIS LOW POWER ANALOG OUTPUT ACCELEROMETER Features * * * * * * * * 1.7 V - 3.6 V supply voltage Ratiometric analog voltage output for x, y and z acceleration User selectable 2 g and 8 g measurement ranges Low current consumption * Active 180 uA * Power down < 0.1uA Size 2x2x0.95 mm3 Proven capacitive 3D-MEMS technology High shock durability RoHS compliant / lead free soldering Applications CMA3000-A01 is targeted to battery operated devices. Typical applications are but not limited * Gaming input devices * Computer peripherals * Free fall detection * Activity monitoring X-out C/V Analog calibration & low-pass filtering Y-out Z-out Oscillator & clock Reference NonVolatile Memory Control Range PD Figure 1 CMA3000-A01 Block Diagram VTI Technologies Oy www.vti.fi PRELIMINARY - Subject to changes Doc. Nr. 8278700.12 1/4 Rev. 12 CMA3000-A01 Performance Characteristics Targets 1) Parameter Vdd Operating temperature ** Current consumption * Acceleration range * Offset * 3) Offset calibration error * 3) Offset temperature error ** 4) Sensitivity * 5) Sensitivity calibration error * Sensitivity temperature error ** 6) Non-Linearity ** 7) Cross-Axis sensitivity ** 8) Bandwidth** 9) Condition Typical supply range 1.7 - 2.7 V Min Typ 2) Max 1.7 -40 -2 -8 -100 2.5 <0.1 180 Vdd/2 Vdd/2 +sens 25 1 2.5 Vdd/6 Vdd/24 0.02 1.5 1 50 120 200 300 300 32 2.7 85 2 8 +100 Extended supply range 2.7 - 3.6 V Min Typ 2) Max 2.7 -40 -2 -8 30 28 3.3 <0.1 200 Vdd/2 Vdd/2 +sens 100 1 2.5 Vdd/6 Vdd/24 10 0.02 1.5 1 50 120 200 300 300 32 3.6 85 2 8 70 600 600 36 Units V C A g V mg mg/C V/g V/g % %/C % FS % Hz Hz g/Hz g/Hz k Power down Active Range pin set to "1" Range pin set to "0" X and Y axis Z axis Full scale=2 g, T=+25 C -40 ... +85 C X and Z axis Y axis Full scale=2 g Full scale=8 g T=+25 C -40 ... +85 C -10 30 +10 3 70 Noise ** 10) Output resistance * ** 1) 2) 3) 4) 5) 6) 7) 8) CL =100 nF L =0 nF X and Z axis Y axis Full scale=2 g Full scale=8 g 28 600 600 36 9) 10) 100% tested in production Qualified during product validation The product is factory calibrated at 2.5 V in room temperature. Typical values are not guaranteed. Z-axis +1g position. Soldering process can cause offset shift which is typically less than 130 mg. Please see TN68_CMA3000_Assembly_Instructions for further details. Offset temperature error = {Vout(0g)-Offset} / Sensitivity [ g ]. Sensitivity = Calibrated sensitivity. Offset= Calibrated offset. Sensitivity = {Vout(+1g) - Vout(-1g)}/2 [V/g] . Sensitivity temperature error = {[Vout(+1g)-Vout(-1g)]/2 - Sensitivity} / Sensitivity x 100% [%]. Sensitivity = Calibrated sensitivity. Best fit straight line. The cross-axis sensitivity determines how much acceleration, perpendicular to the measuring axis, couples to the output. The total cross-axis sensitivity is the geometric sum of the sensitivities of the two axes which are perpendicular to the measuring axis. The angular alignment error between X, Y and Z axis is included into the cross axis sensitivity. Frequency responce -3dB roll off frequency = 1/(2*32k*CL), when CL50 nF. Average noise/axis over the measurement bandwidth defined as 1 (n 2 + n 2 + n 2 ) , where nx, ny and nz are 3 x y z the measured signal's standard deviation due to noise in x, y and z directions. VTI Technologies Oy www.vti.fi PRELIMINARY - Subject to changes Doc. Nr. 8278700.12 2/4 Rev. 12 CMA3000-A01 Figure 2 Package dimensions in mm with 50 m tolerance. VDD 1 2 3 VDD VSS VDD VOUTZ VOUTY VOUTX RANGE PD 8 7 6 5 VOUTY VOUTX RANGE PD CL VOUTZ 100n CL 4 CL Figure 3 Application schematic Note the symmetrical ground plane under the component. Figure 4 Recommended layout pattern (not actual size, for reference only) VTI Technologies Oy www.vti.fi PRELIMINARY - Subject to changes Doc. Nr. 8278700.12 3/4 Rev. 12 CMA3000-A01 Table 1 Pin descriptions Pin # Name 1 VDD 2 VSS 3 VDD 4 VOUTZ 5 PD 6 RANGE 7 VOUTX 8 VOUTY Function Supply voltage Ground Supply voltage Output voltage Z-channel Power Down Acceleration Range selection Output voltage X-channel Output voltage Y-channel Document Change Control Rev. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.10 0.11 0.12 Date 15-May-07 22-May-07 24-Aug-07 10-Sep-07 11-Jan-08 16-Jan-08 14-Feb-08 03-Jun-08 04-Jul-08 28-Aug-08 10-Dec-08 29-Dec-08 Change Description 1st version Application schematic added Pin order updated, component layout pattern added Block diagram updated Acceleration range control polarity updated Offset level added, package drawing, pad layout updated Performance characteristics update Target values updated. Figure 2 updated. Figure 2 updated. Current consumption, sensitivity and sensitivity temperature error, non-linearity, cross axis sensitivity and noise updated. Performance characteristics and notes updated. Figure 2 updated. Version for launch VTI Technologies Oy www.vti.fi PRELIMINARY - Subject to changes Doc. Nr. 8278700.12 4/4 Rev. 12 |
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