Watson Industries, Inc.
VSG Bipolar Rev E 02/15/2008
The wiring call-out is given in Figure 1.
Notes:
The output voltage (blue wire) is relative to the signal ground (green
wire).
The external reference output (orange wire) is for referencing to a digital
circuit with a maximum load of 1 mA.
The temperature sensor output (yellow wire) gives an output voltage
relative to the power ground (black wire).
Figure 1: Electrical Interface
Load Impedances:
Rate Output: > 100 k
Ω
Temperature Output: 14 M
Ω
+5 V Ref Output: > 5 k
Ω
Temperature Voltage Output
The VSG provides a temperature-dependent output voltage on the yellow wire. This
temperature signal is referenced to the black wire (power ground).
The voltage is proportional to the absolute temperature, and has a scale factor of
approximately 2.1 mV/°C.
Output Voltage (mV) = 2.1 * (T + 273) where T = temperature in °C.
e.g. @ 25°C:
2.1 * (25 + 273) = 626 mV
VSG
Shield
Orange
Blue
Green
Yellow
Red
Black
Shield
+5 V REF OUTPUT
ANGULAR RATE OUTPUT
SIGNAL GROUND
TEMP OUTPUT
+8.5 V TO +16 V SUPPLY
POWER GROUND
