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參數(shù)資料
| 型號： | ADVFC32 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Voltage-to-Frequency and Frequency-to-Voltage Converter |
| 中文描述： | 電壓的頻率和頻率至電壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/6頁 |
| 文件大?。?/td> | 141K |
| 代理商： | ADVFC32 |
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADVFC32BH | Voltage-to-Frequency and Frequency-to-Voltage Converter |
| ADVFC32KN | Voltage-to-Frequency and Frequency-to-Voltage Converter |
| ADVFC32SH | Voltage-to-Frequency and Frequency-to-Voltage Converter |
| ADXL105EM-1 | ADXL105/ADXL150/ADXL250/ADXL190 Evaluation Modules |
| ADXL105EM-3 | ADXL105/ADXL150/ADXL250/ADXL190 Evaluation Modules |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADVFC32BH | 功能描述:IC CONV V/F F/V MONO TO100-10 RoHS:否 類別:集成電路 (IC) >> PMIC - V/F 和 F/V 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:頻率至電壓 頻率 - 最大:10kHz 全量程:- 線性:±0.3% 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:Digi-Reel® 其它名稱:LM2917MX-8/NOPBDKR |
| ADVFC32KN | 功能描述:IC CONV V/F F/V 0-70DEGC 14-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - V/F 和 F/V 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:頻率至電壓 頻率 - 最大:10kHz 全量程:- 線性:±0.3% 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:Digi-Reel® 其它名稱:LM2917MX-8/NOPBDKR |
| ADVFC32KN/+ | 功能描述:IC CONVERTER V/F-F/V 14DIP RoHS:否 類別:集成電路 (IC) >> PMIC - V/F 和 F/V 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:頻率至電壓 頻率 - 最大:10kHz 全量程:- 線性:±0.3% 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:Digi-Reel® 其它名稱:LM2917MX-8/NOPBDKR |
| ADVFC32KNKL1 | 制造商:Analog Devices 功能描述: |
| ADVFC32KNZ | 功能描述:IC CONV V/F F/V 0-70DEGC 14DIP RoHS:是 類別:集成電路 (IC) >> PMIC - V/F 和 F/V 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:頻率至電壓 頻率 - 最大:10kHz 全量程:- 線性:±0.3% 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:Digi-Reel® 其它名稱:LM2917MX-8/NOPBDKR |
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