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参数资料
型号： DS1854E-050
厂商： Maxim Integrated Products
文件页数： 22/22页
文件大小： 0K
描述： IC RES TEMP-CNTRL 50/50K 16TSSOP
产品培训模块： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装： 96
接片： 256
电阻（欧姆）： 50k
电路数： 2
温度系数： 标准值 50 ppm/°C
存储器类型： 非易失
接口： I²C（设备位址）
电源电压： 3 V ~ 5.5 V
工作温度： -40°C ~ 95°C
安装类型： 表面贴装
封装/外壳： 16-TSSOP（0.173"，4.40mm 宽）
供应商设备封装： 16-TSSOP
包装： 管件
DS1854
Dual Temperature-Controlled
Resistors with Two Monitors
_____________________________________________________________________
9
Monitored Signals
Each signal (VCC, MON1, MON2, and temperature) is
available as a 16-bit value with 12-bit accuracy (left-jus-
tified) over the serial bus. See Table 1 for signal scales
and Table 2 for signal format. The four LSBs should be
masked when calculating the value.
The signals are updated every frame rate (tframe) in a
round-robin fashion.
The comparison of all four signals with the high and low
user-defined values are done automatically. The corre-
sponding flags are set to 1 within a specified time of
the occurrence of an out-of-limit condition.
Calculating Signal Values
The LSB = 100V for VCC, and the LSB = 38.147V for
the MON signals.
To calculate the value of VCC, convert the unsigned 16-
bit value to decimal and multiply by 100V.
To calculate the value of MON1 or MON2, convert the
unsigned 16-bit value to decimal and multiply by
38.147V.
To calculate the value of the temperature, treat the
two’s complement value binary number as an unsigned
binary number then convert to decimal and divide by
256. If the result is greater than or equal to 128, then
subtract 256 from the result.
Temperature: high byte: -128
°C to +127°C signed; low
byte: 1/256
°C.
SIGNAL
+FS
SIGNAL
+FS
-FS
SIGNAL
-FS
Temperature
127.996
°C
7FFF
-128
°C
8000
VCC
6.55V
FFFF
0V
0000
MON1
2.5V
FFFF
0V
0000
MON2
2.5V
FFFF
0V
0000
Table 1. Scales for Monitor Channels
SIGNAL
FORMAT
VCC
Unsigned
MON1
Unsigned
MON2
Unsigned
Temperature
Two’s complement
Table 2. Signal Comparison
TEMPERATURE
CORRESPONDING LOOK-UP
TABLE ADDRESS
<-40
°C
80h
-40
°C
80h
-38
°C
81h
-36
°C
82h
-34
°C
83h
——
+98
°CC5h
+100
°CC6h
+102
°CC7h
>+102
°CC7h
Table 3. Look-up Table Address for
Corresponding Temperature Values
MSB
215
214
213
212
211
210
29
28
LSB
27
26
25
24
23
22
21
20
MSB (BIN)
LSB (BIN)
VOLTAGE (V)
10000000
3.29
11000000
11111000
4.94
S26
25
24
23
22
21
20
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
MSB (BIN)
LSB (BIN)
TEMPERATURE (
°C)
01000000
00000000
64
01000000
00001111
64.059
01011111
00000000
95
11110110
00000000
-10
11011000
00000000
-40
MSB (BIN)
LSB (BIN)
VOLTAGE (V)
11000000
00000000
1.875
10000000
1.255
Monitor/VCC Bit Weights
Temperature Bit Weights
Temperature Conversion Example
VCC Conversion Example
Monitor Conversion Example
相关PDF资料
PDF描述
DS1855X-050#T&R IC DUAL NV DGTL POT/MEM 14-FCP
DS1856B-030+ IC RES TEMP-CNTRL 30/10K 16-BGA
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DS1857E-050 IC RES TEMP 50/50K 2MON 16-TSSOP
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相关代理商/技术参数
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DS1855B-010 功能描述:数字电位计 IC 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
DS1855B-010/T&R 制造商:Maxim Integrated Products 功能描述:IC RES TEMP-CNTRL 10/10K 16BGA
DS1855B-010/T&R 功能描述:数字电位计 IC 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
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