AD2S90 데이터 시트보기 (PDF) - Analog Devices
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AD2S90 Datasheet PDF : 12 Pages
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AD2S90/AD2S99 TYPICAL CONFIGURATION
Figure 21 shows a typical circuit configuration for the AD2S99
Oscillator and the AD2S90 Resolver-to-Digital Converter. The
maximum level of the SIN and COS input signals to the
AD2S90 should be 2 V rms ± 10%. All the analog ground sig-
nals should be star connected to the AD2S90 AGND pin. If
shielded twisted pair cables are used for the resolver signals, the
AD2S90
shields should also be terminated at the AD2S90 AGND pin.
The SYNREF output of the AD2S99 should be connected to
the REF input pin of the AD2S90 via a 0.1 µF capacitor with a
100 kΩ resistor to GND. This is to block out any dc offset in
the SYNREF signal. For more detailed information please refer
to the AD2S99 data sheet.
4.7F
VSS
0.1F
NC = NO CONNECT
SEL2 = GND
SEL1 = VSS
FOUT = 5kHz
NC 4
SIN 5
DGND 6
COS 7
NC 8
3 2 1 20 19
AD2S99
TOP VIEW
(Not to Scale)
EXC
18
17 EXC
AGND
16
15 NC
14 NC
9 10 11 12 13
50k⍀
VDD
4.7F
0.1F
S2 COS S4
R2
S3
REF
SIN
R4
S1
RESOLVER
0.1F
100k⍀
18 17 16 15 14
REF
19 COS LO
VDD 13
20 COS
VSS 12
1 AGND
DGND 11
2 SIN AD2S90 10
3 SIN LO TOP VIEW 9
(Not to Scale)
4 56 78
4.7F
4.7F
Figure 21. AD2S90 and AD2S99 Example Configuration
VDD
0.1F
0.1F
VSS
REV. D
–11–
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