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| 鍨嬭櫉锛� | AD2S1210BSTZ |
| 寤犲晢锛� | Analog Devices Inc |
| 鏂囦欢闋佹暩(sh霉)锛� | 27/36闋� |
| 鏂囦欢澶у皬锛� | 0K |
| 鎻忚堪锛� | IC CONV R/D 10-16BIT 48-LQFP |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 1 |
| 椤炲瀷锛� | R/D 杞�(zhu菐n)鎻涘櫒 |
| 鍒嗚鲸鐜囷紙浣嶏級锛� | 10锛�12锛�14锛�16 b |
| 鏁�(sh霉)鎿�(j霉)鎺ュ彛锛� | 涓茶锛屽苟鑱�(li谩n) |
| 闆诲闆绘簮锛� | 妯℃摤鍜屾暩(sh霉)瀛� |
| 闆绘簮闆诲锛� | 4.75 V ~ 5.25 V |
| 宸ヤ綔婧害锛� | -40°C ~ 85°C |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
| 灏佽/澶栨锛� | 48-LQFP |
| 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 | 48-LQFP锛�7x7锛� |
| 鍖呰锛� | 鎵樼洡 |
| 鐢�(ch菐n)鍝佺洰閷勯爜闈細 | 790 (CN2011-ZH PDF) |
| 閰嶇敤锛� | EVAL-AD2S1210EDZ-ND - BOARD EVAL AD2S1210 |
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AD2S1210
Rev. A | Page 33 of 36
Table 29. Loop Transfer Function Parameters vs. Resolution
(fCLKIN = 8.192 MHz)
Resolution (Bits)
t1 (ms)
t2 (ms)
Ka (sec2)
10
0.4
42
39.6 脳 106
12
1
91
6.5 脳 106
14
2
160
1.6 脳 106
16
8
728
92.7 脳 103
Note that the closed-loop response is described as
)
(
1
)
(
)
(
s
G
s
G
s
H
+
=
(17)
By converting the calculation to the s-domain, it is possible to
quantify the open-loop dc gain (Ka). This value is useful to
calculate the acceleration error of the loop (see the Sources of
Error section).
The step response to a 10掳 input step is shown in Figure 10,
Figure 11, Figure 12, and Figure 13. The step response to a 179掳
Figure 17. In response to a step change in velocity, the
AD2S1210 exhibits the same response characteristics as it does
for a step change in position.
section show the magnitude and phase responses of the AD2S1210
for each resolution setting.
SOURCES OF ERROR
Acceleration
A tracking converter employing a Type II servo loop does not
have a lag in velocity. There is, however, an error associated
with acceleration. This error can be quantified using the
acceleration constant (Ka) of the converter.
Error
Tracking
on
Accelerati
Input
K
a =
(18)
Conversely,
a
K
on
Accelerati
Input
Error
Tracking
=
(19)
The units of the numerator and denominator must be consistent.
The maximum acceleration of the AD2S1210 is defined by the
maximum acceptable tracking error in the users application.
For example, if the maximum acceptable tracking error is 5掳,
then the maximum acceleration is defined as the acceleration that
creates an output position error of 5掳 (that is, when LOT is
indicated).
An example of how to calculate the maximum acceleration in a
12-bit application with a maximum tracking error of 5掳 is
掳
脳
=
)
/rev
(
360
5
)
(sec
2
a
K
on
Accelerati
Maximum
90,300 rps2
(20)
section show the tracking error vs. acceleration response of the
AD2S1210 for each resolution setting.
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| AD2S1210DSTZ | 鍔熻兘鎻忚堪:IC CONV R/D VAR RES OSC 48LQFP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鏁�(sh霉)鎿�(j霉)閲囬泦 - ADCs/DAC - 灏堢敤鍨� 绯诲垪:- 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 妯�(bi膩o)婧�(zh菙n)鍖呰:50 绯诲垪:- 椤炲瀷:鏁�(sh霉)鎿�(j霉)閲囬泦绯荤当(t菕ng)锛圖AS锛� 鍒嗚鲸鐜囷紙浣嶏級:16 b 閲囨ǎ鐜囷紙姣忕锛�:21.94k 鏁�(sh霉)鎿�(j霉)鎺ュ彛:MICROWIRE?锛孮SPI?锛屼覆琛�锛孲PI? 闆诲闆绘簮:妯℃摤鍜屾暩(sh霉)瀛� 闆绘簮闆诲:1.8 V ~ 3.6 V 宸ヤ綔婧害:-40°C ~ 85°C 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:40-WFQFN 瑁搁湶鐒婄洡 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:40-TQFN-EP锛�6x6锛� 鍖呰:鎵樼洡 |
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