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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉(h脿o)锛� | AD5200BRMZ10 |
| 寤犲晢锛� | Analog Devices Inc |
| 鏂囦欢闋佹暩(sh霉)锛� | 4/15闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC POT DGTL 10K 256POS 10MSOP |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 50 |
| 鎺ョ墖锛� | 256 |
| 闆婚樆锛堟瓙濮嗭級锛� | 10k |
| 闆昏矾鏁�(sh霉)锛� | 1 |
| 婧害绯绘暩(sh霉)锛� | 妯�(bi膩o)婧�(zh菙n)鍊� 500 ppm/°C |
| 瀛樺劜(ch菙)鍣ㄩ鍨嬶細 | 鏄撳け |
| 鎺ュ彛锛� | 3 绶氫覆琛岋紙鑺墖閬告搰锛� |
| 闆绘簮闆诲锛� | 2.7 V ~ 5.5 V锛�±2.3 V ~ 2.7 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� | 10-TFSOP锛�10-MSOP锛�0.118"锛�3.00mm 瀵級 |
| 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 | 10-MSOP |
| 鍖呰锛� | 绠′欢 |
| 鐢�(ch菐n)鍝佺洰閷勯爜闈細 | 786 (CN2011-ZH PDF) |
AD5200/AD5201
鈥�12鈥�
D7
D6
D5
D4
D3
D2
D1
D0
RDAC
LATCH &
DECODER
SHDN
SWSHDN
SW2N 1
SW2N 2
SW1
SW0
A
R
B
W
DIGITAL CIRCUITRY
OMITTED FOR CLARITY
R
RAB
2N鈥�1
Figure 2a. AD5200 Equivalent RDAC Circuit. 255 positions
can be achieved up to Switch SW 2
N
鈥�1.
SW2N 1
D5
D4
D3
D2
D1
D0
RDAC
LATCH &
DECODER
SW2N 2
SW1
SW0
R
B
W
DIGITAL CIRCUITRY
OMITTED FOR CLARITY
SHDN
A
SWSHDN
SW2N
R
RAB
2N
Figure 2b. AD5201 Equivalent RDAC Circuit. Unlike AD5200,
33 positions can be achieved all the way to Switch SW 2
N.
The general equation determining the digitally programmed
output resistance between W and B is:
RD
D
R
WB
AB
() =+
255
50
for AD5200
(1)
RD
D
R
WB
AB
() =+
32
50
for AD5201
(2)
where:
D
is the decimal equivalent of the data contained in
RDAC latch.
RAB is the nominal end-to-end resistance.
RW is the wiper resistance contributed by the on-resistance
of the internal switch.
Note D in AD5200 is between 0 to 255 for 256 positions. On
the other hand, D in AD5201 is between 0 to 32 so that 33
positions can be achieved due to the slight internal structure
difference, Figure 2b.
Again if RAB = 10 k
and A terminal can be opened or tied to
W, the following output resistance between W to B will be set
for the following RDAC latch codes:
AD5200 Wiper-to-B Resistance
DRWB
(DEC)
( )
Output State
255
10050
Full-Scale (RAB + RW)
128
5070
Midscale
189
1 LSB
0
50
Zero-Scale (Wiper Contact Resistance)
AD5201 Wiper-to-B Resistance
DRWB
(DEC)
( )
Output State
32
10050
Full-Scale (RAB + RW)
16
5050
Midscale
1
363
1 LSB
0
50
Zero-Scale (Wiper Contact Resistance)
Note that in the zero-scale condition a finite wiper resistance of
50
is present. Care should be taken to limit the current flow
between W and B in this state to no more than
卤20 mA to avoid
degradation or possible destruction of the internal switch contact.
Like the mechanical potentiometer the RDAC replaces, it is
totally symmetrical. The resistance between the wiper W and
Terminal A also produces a digitally controlled resistance RWA.
When these terminals are used, the B terminal should be tied to
the wiper. Setting the resistance value for RWA starts at a maxi-
mum value of resistance and decreases as the data loaded in
the latch is increased in value. The general equation for this
operation is:
RD
D
R
WA
AB
() =
()
+
255
50
for AD5200
(3)
RD
D
R
WA
AB
() =
()
+
32
50
for AD5201
(4)
Similarly, D in AD5200 is between 0 to 255, whereas D in
AD5201 is between 0 to 32.
For RAB = 10 k
and B terminal is opened or tied to the wiper
W, the following output resistance between W and A will be set
for the following RDAC latch codes:
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| AD5200BRMZ10-REEL7 | 鍔熻兘鎻忚堪:IC POT DGTL 10K 256POS 10MSOP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鏁�(sh霉)鎿�(j霉)閲囬泦 - 鏁�(sh霉)瀛楅浕浣嶅櫒 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:3,000 绯诲垪:DPP 鎺ョ墖:32 闆婚樆锛堟瓙濮嗭級:10k 闆昏矾鏁�(sh霉):1 婧害绯绘暩(sh霉):妯�(bi膩o)婧�(zh菙n)鍊� 300 ppm/°C 瀛樺劜(ch菙)鍣ㄩ鍨�:闈炴槗澶� 鎺ュ彛:3 绶氫覆琛岋紙鑺墖閬告搰锛岄仦澧�锛屽/娓涳級 闆绘簮闆诲:2.5 V ~ 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:8-WFDFN 瑁搁湶鐒婄洡 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:8-TDFN锛�2x3锛� 鍖呰:甯跺嵎 (TR) |
| AD5200BRMZ50 | 鍔熻兘鎻忚堪:IC POT DGTL 50K 256POS 10MSOP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鏁�(sh霉)鎿�(j霉)閲囬泦 - 鏁�(sh霉)瀛楅浕浣嶅櫒 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:3,300 绯诲垪:WiperLock™ 鎺ョ墖:257 闆婚樆锛堟瓙濮嗭級:100k 闆昏矾鏁�(sh霉):1 婧害绯绘暩(sh霉):妯�(bi膩o)婧�(zh菙n)鍊� 150 ppm/°C 瀛樺劜(ch菙)鍣ㄩ鍨�:鏄撳け 鎺ュ彛:3 绶� SPI锛堣姱鐗囬伕鎿囷級 闆绘簮闆诲:1.8 V ~ 5.5 V 宸ヤ綔婧害:-40°C ~ 125°C 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:8-VDFN 瑁搁湶鐒婄洡 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:8-DFN-EP锛�3x3锛� 鍖呰:甯跺嵎 (TR) |
| AD5200BRMZ50-REEL7 | 鍔熻兘鎻忚堪:IC POT DGTL 50K 256POS 10MSOP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鏁�(sh霉)鎿�(j霉)閲囬泦 - 鏁�(sh霉)瀛楅浕浣嶅櫒 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:3,000 绯诲垪:DPP 鎺ョ墖:32 闆婚樆锛堟瓙濮嗭級:10k 闆昏矾鏁�(sh霉):1 婧害绯绘暩(sh霉):妯�(bi膩o)婧�(zh菙n)鍊� 300 ppm/°C 瀛樺劜(ch菙)鍣ㄩ鍨�:闈炴槗澶� 鎺ュ彛:3 绶氫覆琛岋紙鑺墖閬告搰锛岄仦澧�锛屽/娓涳級 闆绘簮闆诲:2.5 V ~ 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:8-WFDFN 瑁搁湶鐒婄洡 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:8-TDFN锛�2x3锛� 鍖呰:甯跺嵎 (TR) |
| AD5201 | 鍒堕€犲晢:AD 鍒堕€犲晢鍏ㄧū:Analog Devices 鍔熻兘鎻忚堪:256-Position and 33-Position Digital Potentiometers |
| AD5201BD | 鍒堕€犲晢:Rochester Electronics LLC 鍔熻兘鎻忚堪:- Bulk 鍒堕€犲晢:Analog Devices 鍔熻兘鎻忚堪: |
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