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| 型号： | DS1841N+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC RES LOG NV I2C 5.5V 10-TDFN |
| 标准包装： | 368 |
| 接片： | 128 |
| 电阻（欧姆）： | 22k |
| 电路数： | 1 |
| 温度系数： | 标准值 250 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN-EP（3x3） |
| 包装： | 管件 |
DS1841
Temperature-Controlled, NV, I2C,
Logarithmic Resistor
Rev 2; 5/08
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
General Description
The DS1841 is a 7-bit, logarithmic, nonvolatile (NV) digi-
tal resistor that features an on-chip temperature sensor
and associated analog-to-digital converter (ADC). The
integrated temperature sensor indexes a 72-byte NV
lookup table (LUT) encompassing a temperature range
from -40°C to +100°C. The LUT output can drive the
resistor directly or be added to an NV initial-value regis-
ter (IVR) to drive the resistor. This flexible LUT-based
architecture allows the DS1841 to provide a tempera-
ture-compensated resistor output with arbitrary slope.
Programming is accomplished by an I2C-compatible
interface, which can operate at speeds of up to 400kHz.
Applications
Optical Transceivers
Linear and Nonlinear Compensation
Instrumentation and Industrial Controls
Mechanical Potentiometer Replacement
Features
22kΩ to 3.7kΩ Adjustable Logarithmic Resistor
with a 3.6k
Ω Fixed Resistor
128 Wiper Tap Points
On-Chip Temperature Sensor and ADC
72-Byte Lookup Table (LUT)
I2C-Compatible Serial Interface
Address Pins Allow Up to Four DS1841s to Share
the Same I2C Bus
Digital Supply of 2.7V to 5.5V
-40°C to +100°C Operating Range
3mm x 3mm, 10-Pin TDFN Package
13
4
10
8
7
SCL
RH
RW
SDA
*EP
*EXPOSED PAD
VCC
A1
2
9
N.C.
GND
5
6
RGND
A0
TDFN
(3.0mm
× 3.0mm × 0.8mm)
TOP VIEW
DS1841
Pin Configuration
Ordering Information
0.1
μF
3.3V
APD BIAS CONTROL APPLICATION
VCC
VOUT
FB
SDA
SCL
A1
A0
GND
100pF
RW
RGND
RH
VAPD
4.7k
Ω
4.7k
Ω
DC-DC
CONVERTER
DS1841
Typical Operating Circuit
+
Denotes a lead-free package.
T&R = Tape and reel.
*
EP = Exposed pad.
Registers and Modes are capitalized for clarity.
PART
TEMP RANGE
PIN-PACKAGE
DS1841N+
-40°C to +100°C
10 TDFN-EP*
DS1841N+T&R
-40°C to +100°C
10 TDFN-EP*
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1841N+ | 功能描述:数字电位计 IC Temp-Cntrlld NV I2C Logarithmic Resistor 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 |
| DS1841N+T&R | 制造商:Maxim Integrated Products 功能描述:TEMP-CNTRLD, NV, I2C, LOGARITHMIC RES - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RES LOG NV I2C 10-TDFN |
| DS1841N+T&R | 功能描述:数字电位计 IC Temp-Cntrlld NV I2C Logarithmic Resistor 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 |
| DS1841T+ | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Temperature-Controlled, NV, I2C, Logarithmic Resistor |
| DS1841T+T&R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Temperature-Controlled, NV, I2C, Logarithmic Resistor |
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