I am in need of some advice and help on A/D converters. I have a device, =
an=20
accelerometer
(Kionix KXM52-1050 tri-axis) whose output is a voltage proportional to th=
e=20
acceleration being sensed. The specs for this device are:

Range g =B12.0
Sensitivity 2 mV/g 660 @3.3V
0g Offset vs. Temp.mV =B1100 Over temp range=B0C -40 to 85
Sensitivity vs. Temp % =B12.0 typical (=B13.0 max) Over temp range
Span mV =B11320 @ 3.3 V
Noise 35 (x and y) 65 (z) typical
Bandwidth Hz (0 to 3000 max (x and y axis) or (0 to 1500 max (z axis)) -3=
dB

Output Resistance Ohms 32K typical
Non-Linearity % of FS =B10.1 typical (=B10.5 max)
Ratiometric Error % =B11.0 typical (=B11.5 max)
Cross-axis Sensitivity % =B12.0 typical (=B13.0 max)
Power Supply V 2.5 to 5.5
mA 1.5 typical (1.8 max) Current draw @ 3.3V
=B5A <10 Shutdown pin connected to GND
ms 1.6 Power-up time @ 500 Hz 6

If I were to interface this directly to a PIC with a 10 bit ADC would thi=
s=20
be a
reasonable solution? Would I get good conversion accuracy. Would I need t=
o=20
make
provisions to shift the span from +/- 1320 mV to 0 to 5 volts. If this is=
 a
better way, could you advise me as to how to do this.

Being a relatively new device, there is very little information or=20
application notes available. I have done a Google search so I know this.

This sort of application is new to me and any enlightenment will be great=
ly
appreciated.

TIA

Vic
________________________________________________________

Victor Fraenckel - The Windman
victorf ATSIGN windreader DOTcom
KC2GUI


--=20
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