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參數(shù)資料
| 型號： | VFC100AG |
| 英文描述： | Synchronized VOLTAGE-TO-FREQUENCY CONVERTER |
| 中文描述： | 同步電壓頻率轉(zhuǎn)換器 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大?。?/td> | 205K |
| 代理商： | VFC100AG |
VFC100
8
R
IN
Clocked
Logic
Output
One-Shot
5
4
14
10
7
6
50kHz Clock
15
1
+V
CC
11
12
9
8
13
5V
Reference
16
+12 to +18VDC
0.1μF
+V
CC
0.1μF
0.1μF
–V
CC
R
1
820
f
OUT
0 to 25kHz
0.8mA
to
8.2mA
0.05μF
8.5mA
to 15.9mA
+V
L
–V
CC
300
16.7mA
INA101
Instrumentation
Amplifier
–V
CC
R
IN
Clocked
Logic
Output
One-Shot
5
4
14
10
7
6
+5VDC
1MHz Clock
15
1
+V
CC
11
12
9
8
13
5V
Reference
16
+15VDC
0.1μF
0.1μF
+V
CC
0.01μF
0.1μF
–V
CC
60pF
V
IN
–5 to +5V
R
1
20k
470
f
OUT
TTL (or 5V CMOS)
0 to 500kHz
PW
300ns
≈
–15VDC
–V
CC
FIGURE 8. Circuit Diagram for Bridge Excitation Using V
REF
.
FIGURE 7. Circuit Diagram for Bipolar Input Voltages.
internal input resistor and a clock frequency of 10 times the
desired full-scale output frequency.
LINEARITY PERFORMANCE
The linearity of the VFC100 is specified as the worst-case
deviation from a straight line defined by low scale and high
scale end point measurements. This worst-case deviation is
expressed as a percentage of the 10V full-scale input. All
units are tested and guaranteed for the specified level of
performance.
Linearity performance and gain error change with full-scale
operating frequency as shown in Figure 10. Figure 11 shows
the typical shape of the nonlinearity at 100kHz full scale.
Integrator voltage swing (determined by C
INT
) has a minor
effect on linearity. A small integrator voltage swing typi-
cally leads to best linearity performance.
The best linearity performance at high full-scale frequencies
(above 500kHz) is obtained by using short output pulses
with a one-shot capacitor of 60pF. As with any high-
frequency circuit, careful attention to good power supply
bypassing techniques (see “Power Supplies and Ground-
ing”) is also required.
TEMPERATURE DRIFT
Conventional VFC circuits are affected significantly by
external component temperature drift. Drift of the external
input resistor and timing capacitor required with these de-
vices may easily exceed the specified drift of the VFC itself.
When used with its internal input resistor, the gain drift of
the complete VFC100 circuit is totally determined by the
performance of the VFC100. Gain drift is specified at a full-
scale output frequency of 100kHz. Conventional VFC cir-
cuits usually specify drift at 10kHz and degrade significantly
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VFC100BG | Synchronized VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC101 | Synchronized VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC101JN | Synchronized VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC101KN | Synchronized VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC110 | High-Frequency VOLTAGE-TO-FREQUENCY CONVERTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| VFC100BG | 制造商:BB 制造商全稱:BB 功能描述:Synchronized VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC101 | 制造商:BB 制造商全稱:BB 功能描述:Synchronized VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC101JN | 制造商:BB 制造商全稱:BB 功能描述:Synchronized VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC101KN | 制造商:BB 制造商全稱:BB 功能描述:Synchronized VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC110 | 制造商:BB 制造商全稱:BB 功能描述:High-Frequency VOLTAGE-TO-FREQUENCY CONVERTER |
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