参数资料
| 型号： | DS1841N+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/17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
16
______________________________________________________________________________________
tion, writes the slave address byte (R/W = 1), reads
data with ACK or NACK as applicable, and generates a
STOP condition. See Figure 4 for I2C Communication
Examples.
Applications Information
Power-Supply Decoupling
To achieve the best results when using the DS1841,
decouple both the power-supply pin and the wiper-bias
voltage pin with a 0.01F or 0.1F capacitor. Use a
high-quality ceramic surface-mount capacitor if possi-
ble. Surface-mount components minimize lead induc-
tance, which improves performance, and ceramic
capacitors tend to have adequate high-frequency
response for decoupling applications.
SDA and SCL Pullup Resistors
SDA is an I/O with an open-collector output that
requires a pullup resistor to realize high-logic levels. A
master using either an open-collector output with a
pullup resistor or a push-pull output driver can be used
for SCL. Pullup resistor values should be chosen to
ensure that the rise and fall times listed in the AC elec-
trical characteristics are within specification. A typical
value for the pullup resistors is 4.7k
Ω.
Appendix A: Control Bits Logic Table
LUTAR
MODE BIT
WIPER
ACCESS
CONTROL
BIT
ADDER
MODE BIT
UPDATE
MODE BIT
CONTROL OF WR AND REGISTER FUNCTIONALITY
X
0
IVR is loaded to WR on power-up. Subsequent writes to 00h set the value
of WR.
0
1
Temperature conversion references the LUT, determining LUTAR value,
the LUTAR determines the LUTVAL value, the unsigned LUTVAL value
is then automatically loaded into WR.
0
1
Temperature conversion references the LUT, determining LUTAR value,
the LUTAR sets the LUTVAL value, the signed LUTVAL value is then
summed with IVR, and the result is loaded into WR.
X
1
0
1
I2C Write (to 09h): The unsigned value written to WR, register 09h, is
loaded into WR.
X
1
I2C Write (to 09h): The signed value of LUTVAL is summed with IVR, then
loaded into WR, register 09h.
1
0
1
I2C Write (to 08h): LUTAR references LUT address, value at LUT address
location is loaded into LUTVAL, the unsigned LUTVAL value is loaded
into WR.
1
0
1
I2C Write (to 08h): LUTAR references LUT address, the signed value at
LUT address location is loaded into LUTVAL, the signed LUTVAL value
is summed with IVR value, and the result is loaded into WR.
Package Information
For the latest package outline information, go to
www.maxim-ic.com/packages.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
10 TDFN-EP
T1033+1
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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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