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參數(shù)資料
| 型號： | DS1841 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Temperature-Controlled, NV, I2C, Logarithmic Resistor |
| 中文描述： | 溫度控制、NV、I²C對數(shù)電阻器 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 260K |
| 代理商： | DS1841 |
D
Temperature-Controlled, NV, I
2
C,
Logarithmic Resistor
Rev 0; 11/07
________________________________________________________________ Maxim Integrated Products
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.
1
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 I
2
C-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
22k
Ω
to 3.7k
Ω
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)
I
2
C-Compatible Serial Interface
Address Pins Allow Up to Four DS1841s to Share
the Same I
2
C Bus
Digital Supply of 2.7V to 5.5V
-40°C to +100°C Operating Range
3mm x 3mm, 10-Pin TDFN Package
1
3
4
10
8
7
SCL
RH
RW
SDA
*EP
*EXPOSED PAD
V
CC
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
μ
F
3.3V
APD BIAS CONTROL APPLICATION
V
CC
V
OUT
FB
SDA
SCL
A1
A0
GND
100pF
RW
RGND
RH
V
APD
4.7k
Ω
4.7k
Ω
DC-DC
CONVERTER
DS1841
Typical Operating Circuit
+Denotes a lead-free package.
T&R = Tape and reel.
Registers and Modes are capitalized for clarity.
PART
TEMP RANGE
-40°C to +100°C
-40°C to +100°C
PIN-PACKAGE
10 TDFN
10 TDFN
DS1841T+
DS1841T+T&R
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS1841N+ | 功能描述:數(shù)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(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器: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(shù)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(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器: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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