參數資料
| 型號： | AD5200BRMZ50 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 4/15頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DGTL 50K 256POS 10MSOP |
| 標準包裝： | 50 |
| 接片： | 256 |
| 電阻（歐姆）： | 50k |
| 電路數： | 1 |
| 溫度系數： | 標準值 500 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | 3 線串行（芯片選擇） |
| 電源電壓： | 2.7 V ~ 5.5 V，±2.3 V ~ 2.7 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 10-MSOP |
| 包裝： | 管件 |
AD5200/AD5201
–12–
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–1
Figure 2a. AD5200 Equivalent RDAC Circuit. 255 positions
can be achieved up to Switch SW 2
N
–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
±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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| AD5200BRMZ50-REEL7 | 功能描述:IC POT DGTL 50K 256POS 10MSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 數字電位器 系列:- 標準包裝:3,000 系列:DPP 接片:32 電阻（歐姆）:10k 電路數:1 溫度系數:標準值 300 ppm/°C 存儲器類型:非易失 接口:3 線串行（芯片選擇，遞增，增/減） 電源電壓:2.5 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WFDFN 裸露焊盤 供應商設備封裝:8-TDFN（2x3） 包裝:帶卷 (TR) |
| AD5201 | 制造商:AD 制造商全稱:Analog Devices 功能描述:256-Position and 33-Position Digital Potentiometers |
| AD5201BD | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述: |
| AD5201BRM10-REEL7 | 制造商:Rochester Electronics LLC 功能描述:5-BIT DIGITAL POT - Tape and Reel 制造商:Analog Devices 功能描述: |
| AD5201BRM50 | 制造商:Analog Devices 功能描述:Digital Potentiometer 33POS 50KOhm Single 10-Pin MSOP 制造商:Rochester Electronics LLC 功能描述:5-BIT DIGITAL POT - Bulk |
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