CS4121 Cherry Semiconductor Corporation, CS4121 Datasheet - Page 7

• Manufacturer Part Number: CS4121
• Description: Low Voltage Precision Air-Core Low Voltage Precision Air-Core
• Manufacturer: Cherry Semiconductor Corporation

Figure 6
R1 - 3.9, 500mW
R2 - 10k½
R3 - 3k½
R4 - 1k½
R
C1 - 0.1µF
C3 - 0.1µF
C4 - 0.47µF
Figure 7
Note 1: The product of C
Note 2: C
Note 3: R
T
- Trim Resistor +/- 20 PPM/¡C 243k½
gain and therefore directly affect temperature compensation
T
T
Range; 100k½ to 500k½
Range; 20pF to .2µF
T
and R
T
Speedo
Speedo
Battery
Battery
Input
have a direct effect on
Input
Gnd
Gnd
D1
D1
R1
R1
Speedometer/Odometer or Tachometer Application
R2
R2
D2
D2
R3
C3
R3
C3
C1
C1
C
C
T
T
C2
R4
R4
COSINE
COSINE
1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
CP+
SQ
FREQ
Gnd
Gnd
COS+
COS-
V
CP+
CP+
SQ
FREQ
Gnd
Gnd
COS+
COS-
V
CP+
CC
Stepper Motor
7
CC
OUT
CS8441
OUT
Air Core
Air Core
Gauge
Air Core
IN
200W
200W
Gauge
IN
200W
C
D1 - 1A, 600 PIV
D2 - 50V, 500mW Zener
Note 1: For 58% Speed Input T
Note 4: The IC must be protected from transients above 60V and
Note 5: Additional filtering on FREQ
T
F/V
- 0.0033µF, +/- 30 PPM/¡C
SINE+
SINE-
F/V
SINE+
SINE-
V
BIAS
Gnd
Gnd
V
BIAS
CP-
REG
OUT
Gnd
Gnd
CP-
OUT
REG
SINE
16
15
14
13
12
11
10
reverse battery conditions
9
SINE
15
10
16
14
13
12
11
9
Speedometer
Odometer
Speedometer
C4
C4
+
+
R
T
f
T
R
MAX
MAX
MAX
T
= maximum speed input frequency
² 5/f
= C
IN
lead may be required
T
(R3+R4)
MAX
where