参数资料
| 型号： | DS1841N+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 17/17页 |
| 文件大小： | 0K |
| 描述： | IC RES LOG NV I2C 10-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 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： | 带卷 (TR) |
DS1841
Temperature-Controlled, NV, I2C,
Logarithmic Resistor
_______________________________________________________________________________________
9
Supply Voltage Monitoring
The DS1841 also features an internal 8-bit supply volt-
age (VCC) monitor. A value of the supply voltage mea-
surement can be read over I2C at the address 0Eh.
To calculate the supply voltage, simply convert the
hexadecimal result into decimal and then multiply it by
the LSB as shown in
the Analog Voltage Monitoring
Characteristics electrical table.
Supply Current (ICC)
The DS1841 has two supply current levels of power sup-
ply consumption. First, active current during I2C com-
munications while in the LUT-Driven Mode is the “worst
case” supply current, ICC. All functionality including I2C
communication is operating simultaneously. Second,
active current without I2C while in the LUT-Driven Mode
is quantified by the supply current, ICC2. SDA and SCL
are held statically in the high logic level.
Slave Address Byte and Address Pins
The slave address byte consists of a 7-bit slave
address plus a R/W bit (see Figure 2). The DS1841’s
slave address is determined by the state of the A0 and
A1 address pins. These pins allow up to four devices to
reside on the same I2C bus. Address pins tied to GND
result in a 0 in the corresponding bit position in the
slave address. Conversely, address pins tied to VCC
result in a 1 in the corresponding bit positions. For
example, the DS1841’s slave address byte is 50h when
A0 and A1 pins are grounded. I2C communication is
described in detail in the
I2C Serial Interface
Description section.
MEMORY
LOCATION
TEMPERATURE (
°C)
LUT34
DECREASING
TEMPERATURE
INCREASING
TEMPERATURE
1
°C HYSTERESIS
WINDOW
LUT33
LUT32
LUT31
LUT30
19
21
23
25
19
27
Figure 1. LUT Hysteresis
01
1
0
R/W
A0
A1
0
MSB
LSB
READ/WRITE BIT
SLAVE ADDRESS*
*THE SLAVE ADDRESS IS DETERMINED BY ADDRESS PINS A0, A1.
Figure 2. Slave Address Byte
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| DS1841T+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Temperature-Controlled, NV, I2C, Logarithmic Resistor |
| DS1841X | 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 |
| DS1842 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:76V, APD, Bias Output Stage with Current Monitoring |
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