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參數(shù)資料
| 型號(hào)： | DS1848B-010 |
| 英文描述： | Dual Temperature-Controlled NV Variable Resistor & Memory |
| 中文描述： | 雙溫控非易失可變電阻 |
| 文件頁(yè)數(shù)： | 6/17頁(yè) |
| 文件大?。?/td> | 234K |
| 代理商： | DS1848B-010 |
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DS1848
6 of 17
PROGRAMMING THE LOOK-UP TABLE (LUT)
The following equation can be used to determine which resistor position setting, 00h – FFh, should be
written in the LUT to achieve a given resistance at a specific temperature.
2
2
25
25
1
25
25
1
)
,
,
(
C
z
C
y
x
C
w
C
v
u
R
C
R
pos
DS1848-050
= 3.78964 for the 50k resistor
= 19.74866 for the 10k resistor
DS1848-010
= 8.394533 for both 10k resistors
R = resistance desired at the output terminal
C = temperature in degrees Celsius
u, v, w, x, y, and z are calibration constants programmed into each of the corresponding look-up tables.
Their addresses and LSB values are given in Table 1 below. Resistor 1 variables are found in Look-Up
table 1 of the EEPROM, and Resistor 2 variables are found in Look-Up Table 2. After these values are
read, they should be overwritten with the appropriate temperature specific resistance settings. Copies of
these values can also be found in the User EEPROM memory.
LOOK-UP VARIABLE ADDRESSES
Table1
Address in
LUT (HEX)
28 – 29
u
2A – 2B
v
2C – 2D
w
2E – 2F
x
30 – 31
y
32 – 33
z
Variable
LSB
2
-8
10
-6
10
-9
2
-8
10
-7
10
-10
When shipped from the factory, all other memory locations in the LUTs are programmed to FFh (except
bytes 00h-07h of Table 1 and 2 which may be factory programmed to values other than FFh).
Note:
Memory locations 44h – 47h, which cover the temperature range (+96oC to +102oC), are outside
of the specified operating temperature range (-40oC to +95oC). However, the values stored in these
locations will act as valid resistance settings if the temperature exceeds +95oC. Therefore, Dallas
Semiconductor recommends that the user program a resistance value into all LUT locations. Failure to do
so will result in the part being set to the default value.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1848B-050 | Dual Temperature-Controlled NV Variable Resistor & Memory |
| DS1848E-010 | Dual Temperature-Controlled NV Variable Resistor & Memory |
| DS1848E-050 | Dual Temperature-Controlled NV Variable Resistor & Memory |
| DS1848 | Dual Temperature-Controlled NV Variable Resistor & Memory |
| DS1851 | Dual Temperature-Controlled NV Digital-to-Analog Converters |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1848B-010/S+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| DS1848B-010/T&R | 制造商:Maxim Integrated Products 功能描述:DUAL NV TEMP RES 10/10K, BGA T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RES/MEM TEMP 10/10K 16-BGA |
| DS1848B-010/T&R | 功能描述:數(shù)字電位計(jì) 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(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1848B-010+ | 功能描述:數(shù)字電位計(jì) IC Dual Temp Controlled NV Variable Resistor 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(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1848B-010+T&R | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 256POS 10KOHM DUAL 16CSBGA - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RES/MEM TEMP 10/10K 16-BGA 制造商:Maxim Integrated Products 功能描述:Digital Potentiometer ICs Dual Temp Controlled NV Variable Resistor |
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