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AD2S1205 データシート(Datasheet) 4 Page - Analog Devices

部品番号. AD2S1205
部品情報  12-Bit R/D Converter with Reference Oscillator
ダウンロード  25 Pages
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
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AD2S1205
Preliminary Technical Data
Rev.PrB | Page 4 of 25
AD2S1205–SPECIFICATIONS
Table 1. (AVDD = DVDD = 5.0 V ± 5% @ −40°C to +125°C CLKIN 6.144MHz to 10.24MHz, unless otherwise noted.)
Parameter
Min
Typ
Max
Unit
Conditions/Comments
Sin, Cos INPUTS1
Voltage
2.3
3.15
4.0
V p-p
Sinusoidal waveforms, Sin-SinLO, Cos-CosLO,
differential inputs
Input Bias Current
2
μA
VIN = 3.96 V p-p
Input Impedance
1.0
VIN = 3.96 V p-p
Common Mode Volts
100
mV Peak
CMV with respect to REFOUT/2 @ 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
1,160
1,600
2,000
Hz
Fixed
Tracking Rate
1,250
rps
CLKIN 10.24MHz. Guaranteed by design. Tested to 800
rps.
Acceleration Error
30
arc min
At 10,000 rps2
Settling Time 179° Step Input
5.2
ms
To within stated accuracy
Settling Time 179° Step Input
4.0
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
2.18
2.24
2.3
V p-p
DOS and LOT go low when Sin or Cos fall below
threshold.
Angular Accuracy (Worst Case)
57
Degrees
LOS indicated before angular output error exceeds limit
(4.0 V p-p input signal and 2.2 V LOS threshold).
Angular Latency (Worst Case)
114
Degrees
Maximum electrical rotation before LOS is indicated (4.0
V p-p input signal and 2.2 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.




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