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参数资料
| 型号： | EVAL-AD2S1205SDZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AD2S1205 |
| 标准包装： | 1 |
| 主要目的： | 接口，旋转变压至数字 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | AD2S1205 |
| 主要属性： | 12 位分辨率，最大 1250 rps 或 1024 脉冲/反向 |
| 已供物品： | 板 |
AD2S1205
Rev. A | Page 3 of 20
SPECIFICATIONS
AVDD = DVDD = 5.0 V ± 5% at 40°C to +125°C, CLKIN = 8.192 MHz ± 25%, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Conditions/Comments
Sin, Cos INPUTS1
Voltage
2.3
3.15
4.0
V p-p
Sinusoidal waveforms, Sin SinLO and Cos CosLO,
differential inputs
Input Bias Current
12
μA
VIN = 4.5 VDC, CLKIN = 10.24 MHz
Input Impedance
0.35
MΩ
VIN = 4.5 VDC
Common-Mode Voltage
100
mV peak
CMV with respect to REFOUT/2 at 10 kHz
Phase-Lock Range
44
+44
Degrees
Sin/Cos vs. EXC output
ANGULAR ACCURACY
Angular Accuracy
±11
Arc minutes
Zero acceleration, Y grade
±22
Arc minutes
Zero acceleration, W grade
Resolution
12
Bits
Guaranteed no missing codes
Linearity INL
2
LSB
Zero acceleration, 0 rps to 1250 rps, CLKIN = 10.24 MHz
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 maximum
Offset
0
1
LSB
Zero acceleration
Dynamic Ripple
1
LSB
Zero acceleration
DYNAMIC PERFORMANCE
Bandwidth
1000
2400
Hz
Tracking Rate
750
rps
CLKIN = 6.144 MHz , guaranteed by design
1000
rps
CLKIN = 8.192 MHz , guaranteed by design
1250
rps
CLKIN = 10.24 MHz , guaranteed by design
Acceleration Error
30
Arc minutes
At 10,000 rps, CLKIN = 8.192 MHz
Settling Time 179° Step Input
5.2
ms
To within ±11 arc minutes, Y grade, CLKIN = 10.24 MHz
4.0
ms
To within 1 degree, Y grade, CLKIN = 10.24 MHz
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, CLKIN = 8.192 MHz
12
kHz
FS1 = high, FS2 = low, CLKIN = 8.192 MHz
15
kHz
FS1 = low, FS2 = high, CLKIN = 8.192 MHz
20
kHz
FS1 = low, FS2 = low, CLKIN = 8.192 MHz
EXC/EXC DC Mismatch
35
mV
THD
58
dB
First five harmonics
FAULT DETECTION BLOCK
Loss of Signal (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 2.18 V LOS threshold)
Angular Latency (Worst Case)
114
Degrees
Maximum electrical rotation before LOS is indicated
(4.0 V p-p input signal and 2.18 V LOS threshold)
Time Latency
125
μs
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