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| 型号： | MAX5498ETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC DIG POT 10BIT 16-TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 接片： | 1024 |
| 电阻（欧姆）： | 10k |
| 电路数： | 2 |
| 温度系数： | 标准值 35 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | 3 线串行（芯片选择） |
| 电源电压： | 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： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（5x5） |
| 包装： | 管件 |
MAX5494–MAX5499
10-Bit, Dual, Nonvolatile, Linear-Taper
Digital Potentiometers
______________________________________________________________________________________
13
resistance is equal to the nominal end-to-end resis-
tance divided by 1024 (10-bit resolution). For example,
the programmable resolution is 9.8 and 48.8 for the
MAX5496/MAX5498 and the MAX5497/MAX5499,
respectively.
The 10-bit data in the 10-bit latch register selects the
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) from the
formula below:
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 RWL at selected
codes.
SPI-Compatible Serial Interface
The MAX5494–MAX5499 use a 3-wire, SPI-compatible,
serial data interface (Figure 6). This write-only interface
contains three inputs: chip-select (CS), data input
(DIN), and data clock (SCLK). Drive CS low to enable
the serial interface and clock data synchronously into
the shift register on each SCLK rising edge.
The WRITE commands (C1, C0 = 00 or 01) require 24
clock cycles to transfer the command and data (Figure
7a). The COPY commands (C1, C0 = 10 or 11) use
either eight clock cycles to transfer the command bits
(Figure 7b) or 24 clock cycles with 16 bits disregarded
by the device (Figure 7a).
After the loading of data into the shift register, drive CS
high to latch the data into the appropriate control regis-
ter (specified by RA1 and RA0) and disable the serial
interface. Keep CS low during the entire serial data
stream to avoid corruption of the data. Table 2 shows
the register map.
Write Wiper Register
The “write wiper register” command (C1, C0 = 00) con-
trols the wiper positions. The 10 data bits (D9–D0) indi-
cate the position of the wiper. For example, if DIN =
000000 0000, the wiper moves to the position closest to
L_. If DIN = 11 1111 1111, the wiper moves closest to H_.
RD
D
RR
WL
W L
Z
() =×
+
1023
END-TO-END RESISTANCE VALUE
10k
50k
CODE (DECIMAL)
RWL (
)RWL ()
0
70
110
1
80
160
512
5,070
25,110
1023
10,070
50,110
Table 1. RWL at Selected Codes
CS
tCSO
tCSS
tCL
tCH
tDH
tDS
tCP
tCSH
tCSW
tCS1
SCLK
DIN
Figure 6. SPI-Interface Timing Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5498ETE+ | 功能描述:数字电位计 IC 10-Bit Dual NV 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 |
| MAX5498ETE+T | 功能描述:数字电位计 IC 10-Bit Dual NV 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 |
| MAX5498ETE-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 |
| MAX5498EVKIT+ | 功能描述:其他开发工具 MAX5494-99 Eval Kit RoHS:否 制造商:Parallax 产品:ELEV-8 Hex Upgrade Kits 类型:Robotics 工具用于评估:ELEV-8 Quadcopter 工作电源电压: |
| MAX5499ETE | 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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