CS4121 Datasheet, PDF (5/12 Pages) Cherry Semiconductor Corporation – Low Voltage Precision Air-Core Low Voltage Precision Air-Core

CS4121
TYPICAL PERFORMANCE CHARACTERISTICS
7
6
5
4
COS
3
2
1
0
−1
−2
−3
−4
−5
SIN
−6
−7
0
45 90 135 180 225 270 315
Degrees of Deflection (°)
Figure 2. Function Generator Output Voltage vs.
Degrees of Deflection
FńVOUT + 2.0 V ) 2.0 FREQ CCP RT (VREG * 0.7 V)
7
6
5
4
3
2
1
0
0
45 90 135 180 225 270 315
Frequency/Output Angle (°)
Figure 3. Charge Pump Output Voltage vs.
Output Angle
7.0 V
(V_SINE+) − (V_SINE−)
−7.0 V
q ^Angle
7.0 V
(V_COS+) − (V_COS−)
ƪ ƫ q + ARCTAN
VSIN ₎ * VSIN _*
VCOS ₎ * VCOS _*
−7.0 V
Figure 4. Output Angle in Polar Form
1.50
1.25
1.00
0.75
0.50
0.25
0.00
−0.25
−0.50
−0.75
−1.00
−1.25
−1.50
0
45 90 135 180 225 270 315
Theoretical Angle (°)
Figure 5. Nominal Output Deviation
45
40
35
30
25
20
15
10
5
0
0
Ideal Degrees
Nominal Degrees
5
9
13
17
21
25
29
33
37
41
45
Nominal Angle (°)
Figure 6. Nominal Angle vs. Ideal Angle (After Calibrating at 1805)
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