参数资料
| 型号： | DS1841N+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/17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
_______________________________________________________________________________________
7
LUT Adder Mode (Default)
LUT Adder Mode is selected by setting the Update
Mode bit to 1 and the Adder Mode bit to 1. This mode
operates similar to LUT Mode with one major difference
(see the
LUT Mode and LUT Adder Mode Block
Diagram). The WR is loaded with the sum of the values
of LUTVAL (the value pointed to by the address stored
in LUTAR) and IVR. Furthermore, in this mode, the val-
ues programmed into the LUT are signed two’s com-
plement. This allows convenient positive or negative
offsetting of the nominal IVR value. WR resistance val-
ues clamp at 00h and 7Fh (the MSB is ignored).
LUT Mode
LUT Mode is selected by setting the Update Mode bit
(Control Register 1, address 03h, bit 0) to a 1 and the
Adder Mode bit (Control Register 1, address 03h, bit 1)
to a 0. An overview of the DS1841 in this mode is illus-
trated in the
LUT Mode and LUT Adder Mode Block
Diagram. The memory map for the LUT Mode and the
LUT Adder Mode is shown in Table 2. The major differ-
ence between the two LUT modes is whether the value
in the IVR is added to the values stored in the LUT. The
dashed line/arrow shown in the
LUT Drive Mode Block
Diagram is not active in LUT Mode. When in LUT Mode,
on power-up the IVR value is recalled into the WR. This
value remains there until completion of the first temper-
ature conversion following power-up. The temperature
is measured every tFRAME. The temperature value is
used to calculate an index that points to the corre-
sponding value in the LUT. This index is referred to as
the LUT Address Register (LUTAR) and is located at
address 08h. The value stored in the LUT at the loca-
tion pointed to by LUTAR is called LUTVAL, and this
value is stored as the WR value (WR) at address 09h
when Update Mode bit = 1. The process then repeats
itself, continuously updating the wiper setting in a
closed-loop fashion. In this mode the 72-byte LUT is
populated with wiper settings for each two-degree tem-
perature window. Valid wiper settings are 00h to 7Fh
(the MSB is ignored). Table 3 shows the memory
addresses of the LUT as well as the corresponding
temperature range for each byte in the LUT.
Table 2. LUT Mode and LUT Adder Mode Memory Map
*In LUT Mode and LUT Adder Mode, WR is accessed through memory address 09h, while IVR remains at memory address 00h.
REGISTER
NAME
ADDRESS
(HEX)
VOLATILE/NV
FACTORY/POWER-UP
DEFAULT
IVR
Initial Value Register
00h
NV (Shadowed)
00h
CR0
Control Register 0
02h
Volatile
00h
CR1
Control Register 1
03h
NV (Shadowed)
03h
LUTAR
LUT Address Register
08h
Volatile
00h
WR
LUT Value Register
09h*
Volatile
00h
CR2
Control Register 2
0Ah
Volatile
00h
TEMP
Temperature Result
0Ch
Volatile (Read Only)
N/A
VOLTAGE
Supply Voltage Result
0Eh
Volatile
N/A
LUT
Temperature Lookup
Registers
80h–C7h
NV
00h
相关PDF资料 |
PDF描述 |
|---|---|
| MS3108E28-11S | CONN PLUG 22POS RT ANG W/SCKT |
| IDT72V71643DAG | IC DGTL SW 4096X4096 144-TQFP |
| IDT72V71643DA | IC DGTL SW 4096X4096 144-TQFP |
| DS1881E-050+T&R | IC DGTL POT NV 2CH 45K 16TSSOP |
| IDT72V70840DA | IC DGTL SW 4096X4096 144-TQFP |
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 |
发布紧急采购，3分钟左右您将得到回复。