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參數(shù)資料
| 型號(hào)： | AD2S83 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Variable Resolution, Monolithic Resolver-to-Digital Converters(可變分辨率,單片解算-數(shù)字變換器) |
| 中文描述： | 可變分辨率，單片分解到數(shù)字轉(zhuǎn)換器（可變分辨率，單片解算-數(shù)字變換器） |
| 文件頁(yè)數(shù)： | 17/19頁(yè) |
| 文件大?。?/td> | 198K |
| 代理商： | AD2S83 |
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AD2S83
–17–
REV. D
Offset Errors
The limiting factor in the measuring of low or “creep” speeds is
the level of dc offset present at zero velocity. The zero velocity
dc offset at the output of the AD2S83 is a function of the input
bias current to the VCO and the value for the input resistor R6.
See “Circuit Functions and Dynamic Performance VCO.”
The offset can be minimized by reducing the maximum tracking
rate so reducing the value for R6. Offset is a function of tracking
rate and therefore resolution; the dc offset is lowest at 16 bits.
To increase the dynamic range of the velocity dynamic resolu-
tion switching can be employed. (Contact MCG Applications
for more information.)
CONNECTING THE RESOLVER
The recommended connection circuit is shown in Figure 11.
In cases where the reference phase relative to the input signals
from the resolver requires adjustment, this can be easily
achieved by varying the value of the resistor R2 of the HF filter
(see Figure 1).
Assume that R1 = R2 = R and C1 = C2 = C
and Reference Frequency =
1
2
π
RC
.
By altering the value of R2, the phase of the reference relative to
the input signals will change in an approximately linear manner
for phase shifts of up to 10 degrees.
Increasing R2 by 10% introduces a phase lag of two degrees.
Decreasing R2 by 10% introduces a phase lead of two degrees.
R9
1M
V
R8
4.7M
V
R2
15k
V
R4
110k
V
R6
62k
V
R5
180k
V
R7
3.3k
V
R3
100k
V
C3
100nF
100nF
C2
2.2nF
C7
150pF
C4
1.5nF
C6
390pF
C5
6.8nF
100nF
VELOCITY
O/P
–12V
0V
COS LOW
SIN LOW
REF LOW
COS HIGH
SIN HIGH
+12V
REFERENCE
INPUT
RESOLVER
SIGNAL
MSB
+
E
L
B
S
INHIBIT
SC2
DATA LOAD
BUSY
RIPPLE CLOCK
COMPLEMENT
DIRECTION
NOTE: R7, C6 AND C7 SHOULD BE CONNECTED AS
CLOSE AS POSSIBLE TO THE CONVERTER PINS.
SIGNAL SCREENS SHOULD BE CONNECTED TO PIN 5.
6
5
4
3
2
1
44 43 42 41 40
18 19 20 21 22 23 24 25 26 27 28
7
8
9
10
11
12
13
14
15
16
17
39
38
37
36
35
34
33
32
31
30
29
AD2S83
TOP VIEW
(Not to Scale)
DATA
OUTPUT
DATA OUTPUT
R1
15k
V
C1
2.2nF
Figure 11. Typical Circuit Configuration
C
R
PHASE LEAD = ARC TAN
1
2
p
fRC
PHASE LAG = ARC TAN 2
p
fRC
R
C
PHASE SHIFT
CIRCUITS
Figure 10. Phase Shift Circuits
TYPICAL CIRCUIT CONFIGURATION
Figure 11 shows a typical circuit configuration for the AD2S83
with 12-bit resolution. Values of the external components have
been chosen for a reference frequency of 5 kHz and a maximum
tracking rate of 260 rps with a bandwidth of 520 Hz. Placing the
values for R4, R6, C4 and C5 in the equation for K
A
gives a
value of 2.7
×
10
6
. The resistors are 0.125 W, 5% tolerance
preferred values. The capacitors are 100 V ceramic, 10% toler-
ance components.
For signal and reference voltages greater than 2 V rms a simple
voltage divider circuit of resistors can be used to generate the
correct signal level at the converter. Care should be taken to
ensure that the ratios of the resistors between the sine signal line
and ground and the cosine signal line and ground are the same.
Any difference will result in an additional position error.
For more information on resistive scaling of SIN, COS and
REFERENCE converter inputs refer to the application note,
“Circuit Applications of the 2S81 and 2S80 Resolver-to-Digital
Converters.”
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD2S83AP | 制造商:Analog Devices 功能描述:Resolver to Digital 16-Bit Parallel ±8arcmin 44-Pin PLCC 制造商:Analog Devices 功能描述:RESOLVER TO DGTL CNVRTR 44PLCC - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:8 ARC MIN 44PLCC -40/85C - Bulk 制造商:Analog Devices 功能描述:IC R/D CONVERTER 10-16 BIT |
| AD2S83APZ | 功能描述:IC R/D CONV TRACKING 44PLCC RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測(cè)器接口 系列:- 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 |
| AD2S83APZ-REEL | 功能描述:IC CONV R/D MONO VAR RES 44PLCC RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測(cè)器接口 系列:- 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 |
| AD2S83IP | 制造商:Analog Devices 功能描述:Resolver to Digital 16-Bit Parallel 制造商:Analog Devices 功能描述:RESOLVER TO DGTL CNVRTR 44PLCC - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:8 ARC MIN 44PLCC -40/85C - Bulk |
| AD2S83IP-REEL | 制造商:Analog Devices 功能描述:Resolver to Digital 16-Bit Parallel 制造商:Rochester Electronics LLC 功能描述:8 ARC MIN 44PLCC -40/85C - Tape and Reel |
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