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AD2S1200 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 AD2S1200은 전자 산업 및 응용 분야에서
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부품번호 AD2S1200 기능
기능 12-Bit R/D Converter with Reference Oscillator
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AD2S1200 데이터시트, 핀배열, 회로
12-Bit R/D Converter
with Reference Oscillator
AD2S1200
FEATURES
Complete monolithic R/D converter
Parallel and serial 12-bit data ports
System fault detection
Absolute position and velocity outputs
Differential inputs
±11 arc minutes of accuracy
1,000 rps maximum tracking rate, 12-bit resolution
Incremental encoder emulation (1,024 pulses/rev)
Programmable sinusoidal oscillator on-board
Compatible with DSP and SPI® interface standards
204.8 kHz square wave output
Single-supply operation (5.00 V ± 5%)
40°C to +125°C temperature rating
44-lead LQFP package
4 kV ESD protection
GENERAL DESCRIPTION
The AD2S1200 is a complete 12-bit resolution tracking resolver-
to-digital converter, integrating an on-board programmable
sinusoidal oscillator that provides sine wave excitation for
resolvers. An external 8.192 MHz crystal is required to provide
a precision time reference. This clock is internally divided to
generate a 4.096 MHz clock to drive all the peripherals.
The converter accepts 3.6 V p-p ± 10% input signals, in the
range of 10 kHz to 20 kHz on the Sin and Cos inputs. A Type II
servo loop is employed to track the inputs and convert the input
Sin and Cos information into a digital representation of the
input angle and velocity. The bandwidth of the converter is set
internally to 1.7 kHz with an external 8.192 MHz crystal. The
maximum tracking rate is 1,000 rps.
FUNCTIONAL BLOCK DIAGRAM
REFBYP REFOUT
FS1 FS2
CLKIN
XTALOUT (8.192MHz)
EXC
EXC
SinLO
Sin
CosLO
Cos
A
B
NM
SAMPLE
AD2S1200
VOLTAGE
REFERENCE
(4.096MHz)
INTERNAL
CLOCK
GENERATOR
REFERENCE
OSCILLATOR
(DAC)
(204.8kHz)
CLOCK
DIVIDER
SYNTHETIC
REFERENCE
FAULT
INDICATORS
ADC
ANGLE θ
ADC
ERROR
MONITOR
MONITOR
CALCULATION/
SIGNAL
ERROR
DEMODULATOR ERROR
MONITOR
ANGLE φ
DIGITAL
FILTER
ENCODER
EMULATION
POSITION
INTEGRATOR
VELOCITY
INTEGRATOR
CPO
DOS
LOT
DIR
POSITION REGISTER
VELOCITY REGISTER
MULTIPLEXER
DATA BUS OUTPUT
CS
RD
RESET RDVEL SOE
DB11
SO
DB10
SCLK
Figure 1.
DB9–DB0
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2003 Analog Devices, Inc. All rights reserved.




AD2S1200 pdf, 반도체, 판매, 대치품
AD2S1200
AD2S1200–SPECIFICATIONS
Table 1. (AVDD = DVDD = 5.0 V ± 5% @ −40°C to +125°C CLKIN 8.192 MHz, unless otherwise noted.)
Parameter
Min Typ Max Unit
Conditions/Comments
Sin, Cos INPUTS1
Voltage
3.24 3.6
3.96 V p-p
Sinusoidal waveforms, differential inputs
Input Bias Current
Input Impedance
Common Mode Volts
2 µA
VIN = 3.96 V p-p
1.0 MΩ VIN = 3.96 V p-p
100 mV Peak CMV @ SinLO, CosLO, with respect to REFOUT @ 10 kHz
Phase Lock Range
−45 +45 Degrees Sin/Cos vs. EXC output
ANGULAR ACCURACY
Angular Accuracy
±11 arc min Zero acceleration Y Grade
±22 arc min Zero acceleration W Grade
Resolution
12 Bits Guaranteed no missing codes
Linearity INL
2 LSB Zero acceleration, 0 to 1,000 rps
Linearity DNL
0.3 LSB
Guaranteed monotonic
Repeatability
1 LSB
Hysteresis
1 LSB
VELOCITY OUTPUT
Velocity Accuracy
2 LSB Zero acceleration
Resolution
11 Bits
Linearity
1 LSB Guaranteed by design 2 LSB max
Offset
0 1 LSB Zero acceleration
Dynamic Ripple
1 LSB Zero acceleration
DYNAMIC PERFORMANCE
Bandwidth
1,500 1,700 2,000 Hz
Fixed
Tracking Rate
1,000 rps
Guaranteed by design. Tested to 800 rps.
Acceleration Error
30 arc min At 10,000 rps2
Settling Time 179° Step Input
4.72 5.0
ms
To within stated accuracy
Settling Time 179° Step Input
3.7 3.8 ms
To within one degree
EXC, EXC OUTPUTS
Voltage
3.34 3.6
3.83 V p-p
Load ±100 µA
Center Voltage
2.39 2.47 2.52 V
Frequency
10 kHz FS1 = high, FS2 = high
12 kHz FS1 = high, FS2 = low
15 kHz FS1 = low, FS2 = high
20 kHz FS1 = low, FS2 = low
EXC/EXC DC Mismatch
35 mV
THD
−60 −55 dB
First five harmonics
FAULT DETECTION BLOCK
LOS
Sin/Cos Threshold
2.86 2.92 3.0
V p-p
DOS and LOT go low when Sin or Cos fall below
threshold.
Angular Accuracy (Worst Case)
45 Degrees LOS indicated before angular output error exceeds limit
(3.96 V p-p input signal and 2.9 V LOS threshold).
Angular Latency (Worst Case)
90 Degrees Maximum electrical rotation before LOS is indicated
(3.96 V p-p input signal and 2.9 V LOS threshold).
Time Latency
125 µs
1 The voltages Sin, SinLO, Cos, and CosLO relative to AGND must always be between 0.2 V and AVDD.
Rev. 0 | Page 4 of 24

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AD2S1200 전자부품, 판매, 대치품
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD2S1200
44 43 42 41 40 39 38 37 36 35 34
DVDD 1
RD 2
CS 3
SAMPLE 4
RDVEL 5
SOE 6
DB11/SO 7
DB10/SCLK 8
DB9 9
DB8 10
DB7 11
AD2S1200
TOP VIEW
(Not to Scale)
33 RESET
32 FS2
31 FS1
30 LOT
29 DOS
28 DIR
27 NM
26 B
25 A
24 CPO
23 DGND
12 13 14 15 16 17 18 19 20 21 22
Table 3. Pin Function Descriptions
Pin No.
Pin Name
1 DVDD
2 RD
3 CS
4 SAMPLE
5 RDVEL
6 SOE
7 DB11/SO
8 DB10/SCLK
9–15
DB9–DB3
16 DGND
17
18–20
DVDD
DB2–DB0
21 XTALOUT
22 CLKIN
23 DGND
24 CPO
25 A
26 B
Figure 2. Pin Configuration
44-Lead Low Profile Quad Flat Package [LQFP] (ST-44)
Pin Type
Supply
Input
Input
Input
Input
Input
Output
Input, output
Output
Ground
Supply
Output
Output
Input
Ground
Output
Output
Output
Pin No.
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Pin Name
NM
DIR
DOS
LOT
FS1
FS2
RESET
EXC
EXC
AGND
Sin
SinLO
AVDD
CosLO
Cos
AGND
REFBYP
REFOUT
Pin Type
Output
Output
Output
Output
Input
Input
Input
Output
Output
Ground
Input
Input
Supply
Input
Input
Ground
Input
Output
Rev. 0 | Page 7 of 24

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