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參數資料
| 型號： | DS1841N+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/17頁 |
| 文件大小： | 0K |
| 描述： | IC RES LOG NV I2C 5.5V 10-TDFN |
| 標準包裝： | 368 |
| 接片： | 128 |
| 電阻（歐姆）： | 22k |
| 電路數： | 1 |
| 溫度系數： | 標準值 250 ppm/°C |
| 存儲器類型： | 非易失 |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 100°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-WFDFN 裸露焊盤 |
| 供應商設備封裝： | 10-TDFN-EP（3x3） |
| 包裝： | 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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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1841N+ | 功能描述:數字電位計 IC Temp-Cntrlld NV I2C Logarithmic Resistor RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝: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:數字電位計 IC Temp-Cntrlld NV I2C Logarithmic Resistor RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1841T+ | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Temperature-Controlled, NV, I2C, Logarithmic Resistor |
| DS1841T+T&R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Temperature-Controlled, NV, I2C, Logarithmic Resistor |
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