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參數(shù)資料
| 型號： | CS8191XNF16 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 外設及接口 |
| 英文描述： | Precision Air-Core Tach/Speedo Driver |
| 中文描述： | 0.01 A BUF OR INV BASED PRPHL DRVR, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大小： | 186K |
| 代理商： | CS8191XNF16 |
7
C
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/V
OUT
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.
V
IN
0V to 4V DC
F/V
OUT
CP-
CS8191
BIAS
100k
W
100k
W
+
-
+
-
10k
W
100k
W
100k
W
F/V
OUT
CP-
CS8191
BIAS
10k
W
100k
W
V
REG
+
-
N/C
V
IN
2V to 6V DC
Figure 6
R1 - 3.9, 500mW
R2 - 10k
R3 - 3k
R4 - 1k
R
T
- Trim Resistor +/- 20 PPM/DEG. C
C1 - 0.1μF
C2 - With CS-8441 application, 10μF
C3 - 0.1μF
C4 - 0.47μF
C
T
- 0.0033μF, +/- 30 PPM/C
D1 - 1A, 600 PIV
D2 - 50V, 500mW Zener
Note 1: The product of C
T
and R
T
have a direct effect on gain and
therefore directly effect temperature compensation.
Note 2: C4 Range; 20pF to .2μF.
Note 3: R4 Range; 100k to 500k.
Figure 7
Note 4: The IC must be protected from transients above 60V and reverse
battery conditions.
Note 5: Additional filtering on the FREQ
IN
lead may be required.
1
CS8441
C2
Air Core
Stepper Motor
200
W
Odometer
1
CP+
V
CC
2
3
4
5
6
7
8
SQ
OUT
FREQ
IN
Gnd
Gnd
COS+
COS-
16
15
14
13
12
11
10
9
CP-
F/V
OUT
V
REG
Gnd
Gnd
SINE+
SINE-
BIAS
C
D1
+
C4
R
T
COSINE
SINE
Battery
CP+
R1
D2
C1
R4
Typical Speedometer
Input
Ground
C
T
R3
R2
C3
Air Core
Gauge
Speedometer
1
CP+
V
CC
2
3
4
5
6
7
8
SQ
OUT
FREQ
IN
Gnd
Gnd
COS+
COS-
16
15
14
13
12
11
10
9
CP-
F/V
OUT
V
REG
Gnd
Gnd
SINE+
SINE-
BIAS
C
D1
+
C4
R
T
COSINE
SINE
Air Core
Gauge
Speedometer
Battery
CP+
R1
D2
C1
R4
Typical Speedometer
Input
Ground
C
T
R3
R2
C3
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