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参数资料
| 型号： | MAX5481EUD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC POT DGTL 10BIT NV 14-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 接片： | 1024 |
| 电阻（欧姆）： | 10k |
| 电路数： | 1 |
| 温度系数： | 标准值 35 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | 4 线串行（芯片选择，递增，增/减） |
| 电源电压： | 2.7 V ~ 5.25 V，±2.5 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 带卷 (TR) |
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
where D is the decimal equivalent of the 10 data bits writ-
ten (0 to 1023), VHL is the voltage difference between the
H and L terminals:
The MAX5481 includes a total end-to-end resistance
value of 10kΩ while the MAX5482 features an end-to-
end resistance value of 50kΩ. 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 10kΩ, while the
MAX5484 provides an end-to-end resistance value of
50kΩ. 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 9.8Ω and 48.8Ω 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 (RWL) by using the
following formula:
where D is decimal equivalent of the 10 data bits writ-
ten, RW-L is the nominal end-to-end resistance, and RZ
is the zero-scale error. Table 1 shows the values of RWL
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.
RD
D
RR
WL
W L
Z
()
=×
+
1023
V
FSE
V
and
V
ZSE
V
FSE
HL
ZSE
HL
=
=
1024
,
MAX5483
(10k
Ω DEVICE)
MAX5484
(50k
Ω DEVICE)
CODE
(DECIMAL)
RWL (
Ω)RWL (Ω)
0
70
110
1
80
160
512
5070
25,110
1023
10,070
50,110
Table 1. RWL at Selected Codes
CODE (DECIMAL)
R
W-H
(k
Ω
)
896
768
512 640
256 384
128
2
4
6
8
10
12
14
16
18
0
1024
50k
Ω DEVICE SCALES BY A FACTOR OF FIVE
Figure 1. Resistance from W to H vs. Code (10k
Ω Voltage-Divider)
CODE (DECIMAL)
R
W-L
(k
Ω
)
896
768
512 640
256 384
128
2
4
6
8
10
12
14
16
18
0
1024
50k
Ω DEVICE SCALES BY A FACTOR OF FIVE
Figure 2. Resistance from W to L vs. Code (10k
Ω Voltage-Divider)
MAX5481–MAX5484
13
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5482ETE | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5482ETE+ | 功能描述:数字电位计 IC 10-Bit Nonvolatile Linear-Taper RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5482ETE+T | 功能描述:数字电位计 IC 10-Bit Nonvolatile Linear-Taper RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5482ETE-T | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5482EUD | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
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