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參數(shù)資料
| 型號： | VFC110 |
| 英文描述： | High-Frequency VOLTAGE-TO-FREQUENCY CONVERTER |
| 中文描述： | 高頻電壓頻率轉(zhuǎn)換器 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 98K |
| 代理商： | VFC110 |
5
VFC110
NONLINEARITY vs FULL SCALE FREQUENCY
10
Full Scale Frequency (Hz)
1
0.1
0.01
0.001
T
4
10
5
10
6
10
7
NONLINEARITY vs INPUT VOLTAGE
0
Input Voltage (V)
0.02
0.01
0
–0.01
–0.02
1
1
2
3
4
5
6
7
8
9
10
1
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1
4
f
FS
= 4MHz
f
FS
= 1MHz
OPERATION
Figure 1 shows the connections required for operation at a
full-scale output frequency of 4MHz. Only power supply
bypass capacitors and an output pull-up resistor, R
PU
, are
required for this mode of operation. A 0V to 10V input
voltage produces a 0Hz to 4MHz output frequency. The
internal input resistor, one-shot and integrator capacitors set
the full-scale output frequency. The input is applied to the
summing junction of the integrator amplifier through the
25k
internal input resistor. Pin 14 (the non-inverting ampli-
fier input) should be referred directly to the negative side of
V
IN
. The common-mode range of the integrating amplifier is
limited to approximately –1V to +1V referred to analog
ground. This allows the non-inverting input to Kelvin-sense
the common connection of V
IN
, easily accommodating any
FIGURE 1. 4MHz Full-Scale Operation.
TYPICAL PERFORMANCE CURVES
(CONT)
At T
A
= +25
°
C, V
S
=
±
15V, unless otherwise noted.
ground-drop errors. The input impedance loading V
IN
is
equal to the input resistor—approximately 25k
.
OPERATION AT LOWER FREQUENCIES
The VFC110 can be operated at lower frequencies simply by
limiting the input voltage to less than the nominal 10V full-
scale input. To maintain a 10V FS input and highest accu-
racy, however, external components are required (see Table
I). Small adjustments may be required in the nominal values
indicated. Integrator and one-shot capacitors are added in
parallel to internal capacitors. Figure 2 shows the connec-
tions required for 100kHz full scale output. The one-shot
capacitor, C
OS
, should be connected to logic ground. The
one-shot connection (pin 6) is not short-circuit protected.
Short-circuits to ground may damage the device.
2
14
IN
V
1
12
11
One-Shot
V
REF
–V
S
Analog Ground
4
13
NC
3
6
8
Logic Ground
OUT
f
10
+V
S
7
NC
5
NC
50pF*
NC
PU
R
680
–15V
+15V
V
L
+5V
0 to 4MHz
25k
*
0 to
+10V
* Nominal Values (±20%)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VFC110AG | High-Frequency VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC110AP | High-Frequency VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC110BG | High-Frequency VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC110SG | High-Frequency VOLTAGE-TO-FREQUENCY CONVERTER |
| VFC1206 | High Precision Flip Chip, Patents Pending (Industrialized Countries) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| VFC-1106 | 制造商:Quest Technology International Inc 功能描述: |
| VFC110AG | 功能描述:電壓頻率轉(zhuǎn)換及頻率電壓轉(zhuǎn)換 Hi f V to f RoHS:否 制造商:Texas Instruments 全標度頻率:4000 KHz 線性誤差:+/- 1 % FSR 電源電壓-最大: 電源電壓-最小: 最大工作溫度:+ 85 C 最小工作溫度:- 25 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-14 封裝:Tube |
| VFC110AP | 功能描述:電壓頻率轉(zhuǎn)換及頻率電壓轉(zhuǎn)換 VOLTAGE-TO-FREQUENCY CONVERTER RoHS:否 制造商:Texas Instruments 全標度頻率:4000 KHz 線性誤差:+/- 1 % FSR 電源電壓-最大: 電源電壓-最小: 最大工作溫度:+ 85 C 最小工作溫度:- 25 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-14 封裝:Tube |
| VFC110AP | 制造商:Texas Instruments 功能描述:VOLTTOFREQUENCY CONVERTER PDIP14 |
| VFC110AP-2 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
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