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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉锛� | AD5200BRMZ10 |
| 寤犲晢锛� | Analog Devices Inc |
| 鏂囦欢闋佹暩(sh霉)锛� | 3/15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�11鈥�
CODE 鈥� Decimal
100.0
10.0
0.1
032
THEORETICAL
I
MAX
鈥�
mA
1.0
64
96
128
160
192
224
256
RAB = 10k
RAB = 50k
TPC 31. AD5200 I MAX vs. Code
CODE 鈥� Decimal
100.0
10.0
0.1
04
THEORETICAL
I
MAX
鈥�
mA
1.0
812
16
20
24
28
32
RAB = 10k
RAB = 50k
TPC 32. AD5201 I MAX vs. Code
OPERATION
The AD5200/AD5201 provide 255 and 33 positions digitally-
controlled variable resistor (VR) devices. Changing the
programmed VR settings is accomplished by clocking in an 8-bit
serial data word for AD5200, and a 6-bit serial data word for
AD5201, into the SDI (Serial Data Input) pins. Table I provides
the serial register data word format. The AD5200/AD5201 are
preset to a midscale internally during power-on condition. In
addition, the AD5200/AD5201 contain power shutdown
SHDN pins that place the RDAC in a zero power consump-
tion state where the immediate switches next to Terminals A and
B are open-circuited. Meanwhile, the wiper W is connected to B
terminal, resulting in only leakage current consumption in the VR
structure. During shutdown, the VR latch contents are maintained
when the RDAC is inactive. When the part is returned from
shutdown, the stored VR setting will be applied to the RDAC.
Table I. AD5200 Serial-Data Word Format
7
B6
B5
B4
B3
B2
B1
B0
B
7
D6
D5
D4
D3
D2
D1
D0
D
B
S
MB
S
L
27
20
Table II. AD5201 Serial-Data Word Format
5
B
*
4
B3
B2
B1
B0
B
5
D
*
4
D3
D2
D1
D0
D
B
S
MB
S
L
25
20
*Six data bits are needed for 33 positions.
PROGRAMMING THE VARIABLE RESISTOR
Rheostat Operation
The nominal resistance of the RDAC between Terminals A and
B are available with values of 10 k
and 50 k. The final two
digits of the part number determine the nominal resistance
value, e.g., 10 k
= 10 and 50 k = 50. The nominal resistance
(RAB) of AD5200 has 256 contact points accessed by the wiper
terminal. The 8-bit data word in the RDAC latch of AD5200 is
decoded to select one of the 256 possible settings. In both parts,
the wiper鈥檚 first connection starts at the B terminal for data 00H.
This B-terminal connection has a wiper contact resistance of
50
as long as valid V
DD/VSS is applied, regardless of the nominal
resistance. For a 10 k
part, the second connection of AD5200 is
the first tap point with 89
[RWB = RAB/255 + RW = 39 + 50 ]
for data 01H. The third connection is the next tap point representing
78 + 50 = 128
for data 02H. Due to its unique internal structure,
AD5201 has 5-bit + 1 resolution, but needs a 6-bit data word to
achieve the full 33 steps resolution. The 6-bit data word in the
RDAC latch is decoded to select one of the 33 possible settings.
Data 34 to 63 will automatically be equal to Position 33. The
wiper 00H connection of AD5201 gives 50
. Similarly, for a
10 k
part, the first tap point of AD5201 yields 363 for
data 01H, 675
for data 02H. For both AD5200 and AD5201,
each LSB data value increase moves the wiper up the resistor
ladder until the last tap point is reached. Figures 2a and 2b show
the simplified diagrams of the equivalent RDAC circuits.
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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烇紝澧�/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烇紝澧�/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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