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CS8191XDWFR20 数据表(PDF) 7 Page - Cherry Semiconductor Corporation

部件名 CS8191XDWFR20
功能描述  Precision Air-Core Tach/Speedo Driver with Short Circuit Protection
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制造商  CHERRY [Cherry Semiconductor Corporation]
网页  http://www.cherrycorp.com/
标志 CHERRY - Cherry Semiconductor Corporation

CS8191XDWFR20 数据表(HTML) 7 Page - Cherry Semiconductor Corporation

  CS8191XDWFR20 Datasheet HTML 1Page - Cherry Semiconductor Corporation CS8191XDWFR20 Datasheet HTML 2Page - Cherry Semiconductor Corporation CS8191XDWFR20 Datasheet HTML 3Page - Cherry Semiconductor Corporation CS8191XDWFR20 Datasheet HTML 4Page - Cherry Semiconductor Corporation CS8191XDWFR20 Datasheet HTML 5Page - Cherry Semiconductor Corporation CS8191XDWFR20 Datasheet HTML 6Page - Cherry Semiconductor Corporation CS8191XDWFR20 Datasheet HTML 7Page - Cherry Semiconductor Corporation CS8191XDWFR20 Datasheet HTML 8Page - Cherry Semiconductor Corporation  
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7
Speedometer/Odometer or Tachometer Application
In some cases a designer may wish to use the CS8191 only
as a driver for an air-core meter having performed the F/V
conversion elsewhere in the circuit.
Figure 8 shows how to drive the CS8191 with a DC voltage
ranging from 2V to 6V. This is accomplished by forcing a
voltage on the F/VOUT lead. The alternative scheme shown
in figure 9 uses an external op amp as a buffer and operates
over an input voltage range of 0V to 4V.
Figure 8. Driving the CS8191 from an external DC voltage.
An alternative solution is to use the CS4101 which has a
separate function generator input lead and can be driven
directly from a DC source. Figure 8 and 9 are not tempera-
ture compensated.
Figure 9. Driving the CS8191 from an external DC voltage using an Op
Amp Buffer.
VIN
0V to 4V DC
F/VOUT
CP-
CS8191
BIAS
100k
W
100k
W
+
-
+
-
10k
W
100k
W
100k
W
F/VOUT
CP-
CS8191
BIAS
10k
W
100k
W
VREG
N/C
VIN
2V to 6V DC
Figure 6
R1 - 3.9, 500mW
R2 - 10k½
R3 - 3k½
R4 - 1k½
RT - Trim Resistor +/- 20 PPM/DEG. C
C1 - 0.1µF
C2 - With CS-8441 application, 10µF
C3 - 0.1µF
C4 - 0.47µF
CT - 0.0033µF, +/- 30 PPM/¡C
D1 - 1A, 600 PIV
D2 - 50V, 500mW Zener
Note 1: The product of CT and RT have a direct effect on gain and
therefore directly effect temperature compensation.
Note 2: C4 Range; 20pF to .2µF.
Note 3: R4 Range; 100k½ to 500k½.
Figure 7
Note 4: The IC must be protected from transients above 60V and reverse
battery conditions.
Note 5: Additional filtering on the FREQIN lead may be required.
1
CS8441
C2
Air Core
Stepper Motor
200
W
Odometer
1 CP+
2
3
4
5
6
7
8
SQOUT
FREQIN
Gnd
Gnd
COS+
COS-
16
15
14
13
12
11
10
9
CP-
F/VOUT
VREG
Gnd
Gnd
SINE+
SINE-
BIAS
D1
+
C4
RT
COSINE
SINE
Battery
VCC
CP+
R1
D2
C1
R4
Typical Speedometer
Input
Ground
CT
R3
R2
C3
Air Core
Gauge
Speedometer
1 CP+
2
3
4
5
6
7
8
SQOUT
FREQIN
Gnd
Gnd
COS+
COS-
16
15
14
13
12
11
10
9
CP-
F/VOUT
VREG
Gnd
Gnd
SINE+
SINE-
BIAS
D1
+
C4
RT
COSINE
SINE
Air Core
Gauge
Speedometer
Battery
VCC
CP+
R1
D2
C1
R4
Typical Speedometer
Input
Ground
CT
R3
R2
C3


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