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SSY0079 SSY0079
- Single Axis CMOS Signal Conditioning Module

>
Open Architecture

SPECTRON SYSTEMS TECHNOLOGY INC.
595 OLD WILLETS PATH
HAUPPAUGE NY 11788
PHONE: 631 582-5600
FAX: 631 582-5671

Specifications subject to change without notice! Doc.# SDS-123-1805




The
SSY0079 Single Axis CMOS Signal Conditioning Module is a DC input/output
operated device, which operates off a single ended supply, and provides a bipolar DC output.
Specifically designed to interface directly with all Spectron Single Axis Tilt Sensors, and with
the SP5000 Series Dual Axis Tilt Sensor (operating in single axis mode), this low power
consumption conditioner is ideal for battery driven applications, while the open architecture
design affords easy installation and adjustment access for OEMs. The module internally
converts the DC input voltage into an AC excitation voltage for the sensor, and demodulates
the sensor output into a smooth amplified DC output voltage. Incorporating a proprietary signal processing algorithm,
and an external temperature compensation sensor (optional), normal measurement errors are severely reduced. The
SSY0079 also features overload protection, and is 100% reliability tested to provide the highest quality available.




General Specifications

Input voltage ...........+5Vdc to +15Vdc
Input current ........... 0.5mA @ +5Vdc, 0.9mA @ +15Vdc
Sensor excitation ....... 3V pp, square wave
Input impedance ........ 5 megohms
Output ............. +/-1.5Vdc @+6Vdc supply, referenced to Vref



Note; minimum output = 50mVdc + (supply voltage . 1.5Vdc)
Load ............... 100k ohm minimum
Time constant ........... 70 msec
Offset adjustment .. +/-45 mVdc
Output ripple .......... 0.35% of output voltage (RG 24k ohm)
Temperature coefficients (module w/out sensor)
- Null ............. 100 microvolts / Co (typical)
- Scale ........... 0.02% / C
o
@ +1Vdc output
Output short duration ....... Continuous (Vout and Vref)
Temperature range
- Operating ....... -25 to +70C
o

- Storage ....... -40 to +80C
o

Temperature Compensation
- Temperature compensation of the assembly (module and sensor) can be accomplished using an
external silicon temperature sensor (KTY81-120) and a resistor (SBT). Exact resistor value is
determined by placing a decade resistor box across R3, and adjusting until desired results is
obtained. With this configuration, it is possible to reduce the scale temperature coefficient error from
a 0.3%/C
o
(nominal), to 0.03%/C
o
(nominal). Please see wiring diagram for connection points.

SSY0079
- Single Axis CMOS Signal Conditioning Module

>
Open Architecture

SPECTRON SYSTEMS TECHNOLOGY INC.
595 OLD WILLETS PATH
HAUPPAUGE NY 11788
PHONE: 631 582-5600
FAX: 631 582-5671

Specifications subject to change without notice! Doc.# SDS-123-1805




Dimensions, Electrical Connections, and Adjustments


mm (inches)