SA5778 Datasheet, PDF (12/16 Pages) NXP Semiconductors – Serial triple gauge driver STGD

Philips Semiconductors
Serial triple gauge driver (STGD)
Product specification
SA5778
14.00
12.00
10.00
8.00
6.00
4.00
2.00
0.00
–2.00
–4.00
31
63
95
127
159
191
223
255
287
319
INPUT CODE
–6.00
–8.00
–10.00
–12.00
–14.00
SL00462
Figure 13. Typical Minor Gauge Output Voltage vs. Input Code (V_SWBATT = 14V)
–56°
–0.744 x V_SWBATT
TOTAL SPAN = 112.15°
0.5 x V_SWBATT
ASSUMING CODE 0 IS 0°:
CODE
POSITION
0
–56.097
31
–45.194
63
–33.940
+56°
95
–22.685
127
–11.430
159
–0.176
191
11.079
0.744 x V_SWBATT
STEP SIZE = 0.35°
223
22.333
255
33.588
287
44.843
319
56.097
IDEAL ANGLE(DEGREE)=CODE/319*2* ArcTan (0.744/0.5)–ArcTan(0.744/0.5)
SR01501
Figure 14. Minor Gauge Total Span
1998 Apr 03
12