參數(shù)資料
型號： MAX5481ETE
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 數(shù)字電位計(jì)
英文描述： Audio digital potentiometers
中文描述： 10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 1024 POSITIONS, QCC16
封裝： 3 X 3 MM, 0.80 MM HEIGHT, EXPOSED PAD, MO-220WEED-2, TQFN-16
文件頁數(shù)： 13/21頁
文件大?。?/td> 1241K
代理商： MAX5481ETE
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
______________________________________________________________________________________
13
where D is the decimal equivalent of the 10 data bits writ-
ten (0 to 1023), V
HL
is the voltage difference between the
H and L terminals:
The MAX5481 includes a total end-to-end resistance
value of 10k
while the MAX5482 features an end-to-
end resistance value of 50k
.
These devices are not
intended to be used as a variable resistor
. Wiper cur-
rent creates a nonlinear voltage drop in series with the
wiper. To ensure temperature drift remains within speci-
fications, do not pull current through the voltage-divider
wiper. Connect the wiper to a high-impedance node.
Figures 1 and 2 show the behavior of the MAX5481’s
resistance from W to H and from W to L. This does not
apply to the variable-resistor devices
MAX5483/MAX5484 Variable Resistors
The MAX5483/MAX5484 provide a programmable
resistance between W and L. The MAX5483 features a
total end-to-end resistance value of 10k
, while the
MAX5484 provides an end-to-end resistance value of
50k
. The programmable resolution of this resistance is
equal to the nominal end-to-end resistance divided by
1024 (10-bit resolution). For example, each nominal
segment resistance is 9.8
and 48.8
for the MAX5483
and the MAX5484, respectively.
The 10-bit data in the 10-bit latch register selects a
wiper position from the 1024 possible positions, result-
ing in 1024 values for the resistance from W to L.
Calculate the resistance from W to L (R
WL
) by using the
following formula:
where D is decimal equivalent of the 10 data bits writ-
ten, R
W-L
is the nominal end-to-end resistance, and R
Z
is the zero-scale error. Table 1 shows the values of R
WL
at selected codes for the MAX5483/MAX5484.
Digital Interface
Configure the MAX5481–MAX5484 by a pin-selectable,
3-wire, SPI-compatible serial data interface or an
up/down interface. Drive SPI/
UD
high to select the 3-
wire SPI-compatible interface. Pull SPI/
UD
low to select
the up/down interface.
R
D
( )
=
D
R
R
WL
W L
Z
×
+
1023
V
FSE
V
1024
and
V
ZSE
V
1024
FSE
HL
ZSE
HL
=
=
,
MAX5483
(10k
DEVICE)
R
WL
(
)
70
80
5070
10,070
MAX5484
(50k
DEVICE)
R
WL
(
)
110
160
25,110
50,110
CODE
(DECIMAL)
0
1
512
1023
Table 1. R
WL
at Selected Codes
CODE (DECIMAL)
R
W
)
896
768
512
640
256
384
128
2
4
6
8
10
12
14
16
18
0
0
1024
50k
DEVICE SCALES BY A FACTOR OF FIVE
Figure 1. Resistance from W to H vs. Code (10k
Voltage-Divider)
CODE (DECIMAL)
R
W
)
896
768
512
640
256
384
128
2
4
6
8
10
12
14
16
18
0
0
1024
50k
DEVICE SCALES BY A FACTOR OF FIVE
Figure 2. Resistance from W to L vs. Code (10k
Voltage-Divider)
相關(guān)PDF資料
PDF描述
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MAX5484 Audio digital potentiometers
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5481ETE/GG8 制造商:Maxim Integrated Products 功能描述:
MAX5481ETE/GH9-T 制造商:Maxim Integrated Products 功能描述:- Tape and Reel
MAX5481ETE+ 功能描述:數(shù)字電位計(jì) IC 10-Bit Nonvolatile Linear-Taper 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
MAX5481ETE+T 功能描述:數(shù)字電位計(jì) IC 10-Bit Nonvolatile Linear-Taper 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
MAX5481ETE-T 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
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