SA5777A Datasheet, PDF (7/12 Pages) NXP Semiconductors – Dual air-core gauge driver

Philips Semiconductors
Dual air-core gauge driver
Product specification
SA5777A
0.5 x V_BB
–56°
+56°
–0.744 x V_BB
TOTAL SPAN = 112.15°
0.744 x V_BB
STEP SIZE = 0.35°
ASSUMING CODE 0 IS 0°:
CODE
POSITION
0
–56.097
31
–45.194
63
–33.940
95
–22.685
127
–11.430
159
–0.176
191
11.079
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)
SL00463
Figure 4. Total span
120
100
80
60
40
20
0
0
15
31
41
63
79
95 111 127 143 159 175 191 207 223 239 255 271 287 303 319
INPUT CODE
Figure 5. Meter position (degrees) vs input code
SL00464
1999 Sep 20
7