參數(shù)資料
型號： DR-11800D4-895Z
英文描述： Converter
中文描述： 轉(zhuǎn)換器
文件頁數(shù)： 3/4頁
文件大?。?/td> 87K
代理商： DR-11800D4-895Z
*For RH2-RL2: V
OUTL
-
L
45.38k
V
IN
86.63k + R'
*For RH3-RL3: V
OUTL
-
L
45.38k
V
IN
49.92k + R'
*
Note: For RH2, RL2 and RH3, RL3: V
OUT
(single-ended) = 1/2 V
OUTL
-
L
.
OUTPUT PHASING AND OUTPUT SCALE FACTOR
The analog output signals have the following phasing:
Resolver output:
S3—S1 = (RH - RL)A
o
(1 + A(
θ
)) sin
θ
S2—S4 = (RH - RL)A
o
(1 + A(
θ
)) cos
θ
The output amplifiers simultaneously track reference voltage
fluctuations because they are proportional to (RH - RL). The
transformation ratio A
o
is 11.8/26 for 11.8 Vrms
L
-
L
output. The
maximum variation in A
o
from all causes is ± 0.2%.The term A(
θ
)
represents the variation of the amplitude with the digital signal
input angle. A(
θ
), which is called the scale factor variation, is a
3
35
S3
S3
32
S1
S1
DR-11525
36
S2
S2
31
S4
S4
FIGURE 4. DIFFERENTIAL RESOLVER OUTPUT
35 (+SIN)
S3
S3
DR-11525
36 (+COS)
S2
S2
3
GND
FIGURE 5. SINGLE-ENDED RESOLVER OUTPUT
TABLE 2. PIN CONNECTION TABLE
PIN
NAME
13
14
15
16
17
18
19
20
21
22
23
24
Bit 14
PIN
1
2
3
4
5
6
7
8
9
10
11
12
PIN
25
26
27
28
29
30
31
32
33
34
35
36
NAME
Bit 1 (MSB)
Bit 15
Bit 16 (LSB)
LM
LL
LA
S4 (-COS)
S1 (-SIN)
NC
NC
S3 (+SIN)
S2 (+COS)
NAME
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
NC
+15V
GND
-15V
RH2 (6.81V)
RL2 (6.81V)
-R
RL (11.8V)
RL
3 (2V)
RH (11.8V)
RH
3 (2V)
Notes:
1. -R (Pin 7) can be used for test purposes to detect whether a reference signal
is present. See block diagram.
2. Functions LL, LA, and LM may be left unconnected when not used.
3. External scaling resistor pin 11 RH3 output pins (31, 32, 35, 36).
4. RH and RL (pins 10, 8) 26 V reference with differential outputs on pins 35, 36,
32, 31.
5. RH2 and RL2 (pins 5, 6) 26 V reference with single-ended output on pins 35,
36.
6. RH3 and RL3 (pins 11, 9) 4.4 V reference with single-ended outputs on pins
35, 36.
FIGURE 3. REFERENCE LEVEL ADJUSTMENT
49.92k
49.92k
36.71k
36.71k
13.37k
13.37k
REFERENCE
INPUTS
V (RH-RL)
V (RH2-RL2)
V (RH3-RL3)
8.703k
45.38k
VOUT L-L
+
_
R
′
R
′
=
=
smooth function of (
θ
) without discontinuities and is less than
±0.05% for all values of (
θ
). The total maximum variation in
A
o
[1 + A(
θ
)] is therefore ± 0.25%.
Because the amplitude factor (RH - RL)A
o
(1 + A(
θ
)) varies simul-
taneously on all output lines, it will not be a source of error when
the DR-11525 is to drive a ratiometric system such as a synchro
or resolver. However, if the outputs are used independently, as in
x-y plotters, the amplitude variations must be taken into account.
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PDF描述
DR-11525 Digital to Synchro Conversion|HIGH FREQUENCY. HIGH ACCURACY
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