參數(shù)資料
型號(hào)： RD-19230FX-202T
元件分類： ADC
英文描述： Resolver-to-Digital Converter
中文描述： 分解器數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù)： 5/20頁(yè)
文件大?。?/td> 152K
代理商： RD-19230FX-202T
5
Data Device Corporation
www.ddc-web.com
RD-19230
4) This device has several high impedance amplifier inputs
(+C, -C, +S, -S, -VCO, VEL SJ1, and VEL SJ2) that are sensitive
to noise coupling. External components should be connected as
close to the converter as possible.
5) Setup of bandwidth and velocity scaling for the optimized crit-
ically damped case should proceed as follows:
As an example:
Calculate component values for a 16 bit converter with 100Hz
bandwidth, a tracking rate of 10 RPS and a full scale velocity
of 4 Volts.
- Select the desired f
BW
(closed loop) based on overall
system dynamics.
- Select f carrier
≥
3.5f
BW
- Select the applications tracking rate (in accordance with TABLE 3),
and use appropriate values for R SET and R CLK
- Compute Rv =
- Compute C
BW
(pF) =
- Where Fs = 67 kHz for R CLK = 30 K
100 kHz for R CLK = 20 K
125 kHz for R CLK = 15 K
- Compute R
B
=
- Compute
3.2 x Fs (Hz) x 10
8
Rv x (f
BW
)
2
Full Scale Velocity Voltage
Tracking Rate (rps) x 2
resolution
x 50 pF x 1.25 V
0.9
C
BW
x f
BW
C
BW
10
- Rv = 4 V
10 rps x 2
x 50 pF x 1.25 V
- Compute C
BW
(pF) = 3.2 x 67 kHz x 10
2
- Compute R
B
= 0.9
21955 x 10
x 100 Hz
8
FIGURE 5. -5V INVERTER CONNECTIONS
17
25
22
16
23
24
26
27
58
33
+
+
10
μ
F/10V
V
DD
V
DD
V
DD
P
PCAP
+5V
NCAP
GND
AGND
V
SS
P
V
SS
V
SS
RD-19230
47
μ
F/10V
TABLE 3. MAX TRACKING RATE (MIN) IN RPS
R SET
(
)
R CLK
(
)
RESOLUTION
10
12
1152 288
14
72
16
18
30k** or open
30k
23k
20k
1728 432 108
27
23k
15k
2304 576
*
*
* Not recommended.
** The use of a high quality thin-film resistor will provide better temperature
stability than leaving open.
相關(guān)PDF資料
PDF描述
RD-19230FX-203 Resolver-to-Digital Converter
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RD-19230FX-302 Resolver-to-Digital Converter
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RD-19230FX-203 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Resolver-to-Digital Converter
RD-19230FX-203T 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RESOLVER-TO-DIGITAL CONVERTER
RD-19230FX-302 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Resolver-to-Digital Converter
RD-19230FX-302T 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Resolver-to-Digital Converter
RD-19230FX-303 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Resolver-to-Digital Converter
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