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參數(shù)資料
| 型號： | AS1500-Z-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | 256 steps, SPI 10kΩ, DigiPot; Package Type: SOIC-8; Resistance: 10,00 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大小： | 398K |
| 代理商： | AS1500-Z-T |
www.austriamicrosystems.com
Revision 1.01
9 - 14
AS1500
Data Sheet
- Detailed Description
Rheostat Operation
The digital potentiometer family AS150x offers nominal resistor values of 10k
Ω
, 20k
Ω
, 50k
Ω
and 100k
Ω
. The resistor
has 256 contact points where the wiper can access the resistor. The 8-bit code word determines the position of the
wiper and is decoded through an internal logic. The lowest code 00h is related to the terminal B. The resistance is then
only determined by the wiper resistance (100
Ω
). The resistance for the next code 01h is the nominal resistor RAB
(10k
Ω
, 20k
Ω
, 50k
Ω
or 100k
Ω
) divided through 256 plus the wiper resistor. In case of AS1501 (10k
Ω
) the total
resistance is 39
Ω
+100
Ω
=139
Ω
. Accordingly the resistor for code 02h is 78
Ω
+100
Ω
=178
Ω
. The last code 255h does
not connect to terminal A directly (see Figure 5). So the maximum value is 10000
Ω
- 39
Ω
+100
Ω
= 10061
Ω
. The
general formula for the calculation of the resistance R
WB
is:
R
WB
(Dx)= (Dx)/256 R
AB
+ R
W
(EQ 1)
where R
AB
is the nominal resistance between terminal A and B, R
W
is the wiper resistance and D
X
is the 8-Bit Code
word. In Table 7 the resistor values between the wiper and terminal B for AS1500 are given for specific codes D
X
. In
the zero-scale condition the wiper resistance of 100
Ω
remains present.
The maximum current through the wiper and terminal B is 5mA. If the current exceeds this limit the internal switches
can degrade or even be damaged. As a mechanical potentiometer the resistances R
WA
and R
WB
are totally
symmetrical. The relation between them is shown in
Figure 5
.
Figure 5. R
WA
and R
WB
versa code
Table 7. RDAC-Codes WB
D
X
(Dec)
R
WB
(
Ω
)
Output State
255
10061
Full Scale
128
5100
Midscale
1
139
1 LSB
0
100
Zero-Scale
(Wiper Contact Resistance)
25
10
75
50
25
0
0
64
12
19
CODE - Decimal
R
W
,
W
A
R
WA
R
WB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS1504-T | Octal, 8-bit, Mid-Scale Reset; Package Type: SOIC(150mil)-16 |
| AS1505-T | Octal 8-bit Zero-Scale Setting; Package Type: SOIC(150mil)-16 |
| AS1506-BTDT-10 | 256-Tap DigiPot SPI EEPROM; Package Type: TDFN(3x3)-8; Resistance: 10,00 |
| AS1506-BTDT-100 | 256-Tap DigiPot SPI EEPROM; Package Type: TDFN(3x3)-8; Resistance: 100,00 |
| AS1506-BTDT-50 | 256-Tap DigiPot SPI EEPROM; Package Type: TDFN(3x3)-8; Resistance: 50,00 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1501 | 功能描述:數(shù)字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| AS150-12 | 制造商:ASTRODYNE 制造商全稱:Astrodyne Corporation 功能描述:150W Single Output Switching Power Supply |
| AS15013.5 | 制造商:ASTRODYNE 制造商全稱:Astrodyne Corporation 功能描述:150W Single Output Switching Power Supply |
| AS150-15 | 制造商:ASTRODYNE 制造商全稱:Astrodyne Corporation 功能描述:150W Single Output Switching Power Supply |
| AS1501-7R | 功能描述:EURO-CASSETTE 100W 15V RoHS:否 類別:電源 - 外部/內(nèi)部（非板載） >> DC DC Converters 系列:* 標準包裝:1 系列:Quint 類型:隔離 輸入電壓:24V 輸出:24V 輸出數(shù):1 輸出 - 1 @ 電流（最大）:24 VDC @ 50A 輸出 - 2 @ 電流（最大）:- 輸出 - 3 @ 電流（最大）:- 輸出 - 4 @ 電流（最大）:- 功率（瓦特）:1200W 安裝類型:底座安裝 工作溫度:0°C ~ 40°C 效率:- 封裝/外殼:模塊 尺寸/尺寸:4.33" L x 9.09" W x 6.14" H（110mm x 231mm x 156mm） 包裝:散裝 電源（瓦特）- 最大:1200W 批準:- 其它名稱:277-69722866365-NDQUINT-BAT/24DC/12AH |
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