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參數(shù)資料
| 型號： | AD2S93 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Low Cost LVDT-to-Digital Converter |
| 中文描述： | 低成本LVDT的，數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 349K |
| 代理商： | AD2S93 |
–8–
REV. A
AD2S93
Three- or Four-Wire LVDT Connection
In this method of connection, shown in Figure 6, the converters
digital output is proportional to the ratio:
(
A
B
)
(
A
+
B
) / 2
where A and B are the individual LVDT secondary output volt-
ages. Inspection of Figure 6 should demonstrate why this rela-
tionship is true. (A–B) is simply the voltage across the series
connected secondaries of the LVDT and is applied to the A, B
input to the converter. (A + B)/2 is effectively the average of
the two secondary voltages as computed by the balanced bridge
completion resistors and the grounding of the secondary
center-tap.
Note: This method of connection is appropriate only for where
(A + B) is a constant, independent of LVDT position. Any lack
of constancy in (A + B) will be reflected as an additional non-
linearity in the output. It is up to the user to determine if (A +
B) is sufficiently constant over the particular stroke length em-
ployed.
This method will usually restrict the usable LVDT range to half
of its full range. The restriction can be eliminated, however, by
attenuating DIFF by a factor of 2 or increasing V
REF
by a factor
of 2. This connection method has the tremendous advantage of
being insensitive to temperature related phase shifts and excita-
tion oscillator instability effects usually associated with more
conventional LVDT conversion systems.
As in the case of the half-bridge type LVDT connection, R
C1
and R
C2
are the bridge completion resistors and are matched to
a degree sufficient to ensure that the digital output representing
the null position does not vary from the LVDT’s natural null
position. If null adjustment is required, a potentiometer can be
used in place of the common connection between the two
resistors.
NC = NO CONNECT
D
S
U
C
N
N
NC
OVR
NULL
DEMODOUT
DIR
26
27
28
4
2
3
15
18
17
16
12
14
13
25
24
21
20
19
23
22
1
5
6
9
10
11
7
8
TOP VIEW
(Not to Scale)
AD2S93
C
+5V
0V
–5V
LOS
12k
GAIN
DIFF
AGND
B
R4
R3
V
DD
R
C2
R
C1
B
A
R2
C2
C1
C3
R5
REF
PISTON
GND
V
DD
V
SS
DGND
R6
R7
C4
Figure 5. Half-Bridge Type LVDT Connection
NC = NO CONNECT
D
S
U
C
N
N
NC
OVR
NULL
DEMODOUT
DIR
26
27
28
4
2
3
15
18
17
16
12
14
13
25
24
21
20
19
23
22
1
5
6
9
10
11
7
8
TOP VIEW
(Not to Scale)
AD2S93
C
V
DD
DGND
V
SS
+5V
0V
–5V
C3
R5
LOS
12k
GAIN
DIFF
AGND
B
R4
R3
PISTON
V
DD
REF
C4
R6
R2
C2
C1
R7
R
C2
R
C1
Figure 6. Three- or Four-Wire LVDT Connection
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PDF描述 |
|---|---|
| AD2S93AP | Aluminum Electrolytic Capacitor; Capacitor Type:Industrial Grade; Voltage Rating:350VDC; Capacitor Dielectric Material:Aluminum Electrolytic; Operating Temperature Range:-40 C to +85 C; Capacitance:160uF RoHS Compliant: Yes |
| AD2S93BP | Aluminum Electrolytic Capacitor; Capacitor Type:Industrial Grade; Voltage Rating:150VDC; Capacitor Dielectric Material:Aluminum Electrolytic; Operating Temperature Range:-40 C to +85 C; Capacitance:16uF RoHS Compliant: Yes |
| AD2S99 | Aluminum Electrolytic Capacitor; Capacitor Type:Industrial Grade; Voltage Rating:250VDC; Capacitor Dielectric Material:Aluminum Electrolytic; Operating Temperature Range:-40 C to +85 C; Capacitance:16uF RoHS Compliant: Yes |
| AD2S99AP | Programmable Oscillator |
| AD2S99BP | Programmable Oscillator |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD2S93AP | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost LVDT-to-Digital Converter |
| AD2S93BP | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost LVDT-to-Digital Converter |
| AD2S99 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Programmable Oscillator |
| AD2S99AP | 功能描述:IC OSC SINUSOIDAL 20KHZ 20-PLCC RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 可編程計時器和振蕩器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:45 系列:- 類型:溫度 - 補償晶體振蕩器（TCXO） 計數(shù):- 頻率:25MHz 電源電壓:3.135 V ~ 3.465 V 電流 - 電源:1.5mA 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 包裝:管件 供應商設備封裝:16-SOIC W 安裝類型:表面貼裝 |
| AD2S99APZ | 功能描述:IC OSC SINUSOIDAL 20KHZ 20-PLCC RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 可編程計時器和振蕩器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:45 系列:- 類型:溫度 - 補償晶體振蕩器（TCXO） 計數(shù):- 頻率:25MHz 電源電壓:3.135 V ~ 3.465 V 電流 - 電源:1.5mA 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 包裝:管件 供應商設備封裝:16-SOIC W 安裝類型:表面貼裝 |
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