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參數資料
| 型號： | ADVFC32SH |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬專用變換器 |
| 英文描述： | Voltage-to-Frequency and Frequency-to-Voltage Converter |
| 中文描述： | VOLTAGE-FREQUENCY CONVERTER, 0.5 MHz, MBCY10 |
| 封裝： | TO-100, 10 PIN |
| 文件頁數： | 6/6頁 |
| 文件大小： | 141K |
| 代理商： | ADVFC32SH |
ADVFC32
–6–
REV. A
C
P
Figure 6. High Noise Immunity Data Link
fiber link, and the optocoupler provides common-mode isolation
up to 3000 V dc.
T he data link input voltage is changed in a frequency modulated
signal by the first ADVFC32. A 42.2 k
input resistor and a
100 k
offset resistor set the scaling so that a 0 V input signal
corresponds to 50 kHz, and a 10 V input results in the maxi-
mum output frequency of 500 kHz. A high frequency opto-
coupler is then used to transmit the signal across any common-
mode voltage potentials to the receiving ADVFC32. T he opto-
coupler is not necessary in systems where common-mode noise
is either very small or a constant low level dc voltage. In systems
where common-mode voltage may present a problem, the con-
nection between the two locations should be through the opto-
coupler; no power or ground connections need to be made.
T he output of the optocoupler drives an ADVFC32 hooked up
in the F/V configuration. Since the reconstructed signal at Pin
10 has a considerable amount of carrier feedthrough, it is desir-
able to filter out any frequencies in the carrier range of 50 kHz
to 500 kHz. T he frequency response of the F/V converter is only
3 kHz due to the pole made by the integrator, so a second 3 kHz
filter will not significantly limit the bandwidth. With the simple
one pole filter shown in Figure 6, the input to output 3 dB point
is approximately 2 kHz, and the output noise is less than
15 mV. If a lower output impedance drive is needed, a two pole
active filter is recommended as an output stage.
Although the F/V conversion technique used in this circuit is
quite simple, it is also very limited in terms of its frequency re-
sponse and output ripple. T he frequency response is limited by
the integrator time constant and while it is possible to decrease
that time constant, either signal range or output ripple must be
sacrificed. T he performance of the circuit of Figure 6 is shown
in the photograph below. T he top trace is the input signal, the
middle trace is the frequency-modulated signal at the
optocoupler’s output, and the bottom trace is the recovered
signal at the output of the F/V converter.
OUT LINE DIME NSIONS
Dimensions shown in inches and (mm).
14-Pin Plastic DIP Package
T O-100 Package
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| ADVFC32SH/883B | 功能描述:電壓頻率轉換及頻率電壓轉換 IC MONO V/F AND F/V CONV 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 安裝風格:Through Hole 封裝 / 箱體:PDIP-14 封裝:Tube |
| ADVFEEDTHRU001 | 制造商:AVX Corporation 功能描述:DESIGN KIT FEEDTHROUGH CAPACITORS 制造商:AVX Corporation 功能描述:DESIGN KIT, FEEDTHROUGH CAPACITORS 制造商:AVX Corporation 功能描述:DESIGN KIT, FEEDTHROUGH CAPACITORS; Kit Contents:26 Feedthrough Capacitors ;RoHS Compliant: Yes |
| A-DVI-1001-01-R | 制造商:Assmann Electronics Inc 功能描述:CONN DVI-D MALE SLDR |
| A-DVI-1001-02-R | 制造商:Assmann Electronics Inc 功能描述:CONN DVI MALE SLDR |
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