- 您现在的位置：买卖IC网 > PDF目录19499 > DS18B20-PAR+T&R (Maxim Integrated)IC THERM MICROLAN PROG-RES TO-92 PDF资料下载
参数资料
| 型号： | DS18B20-PAR+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 2/19页 |
| 文件大小： | 221K |
| 描述： | IC THERM MICROLAN PROG-RES TO-92 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 功能： | 温度计，恒温计 |
| 传感器类型： | 内部 |
| 感应温度： | -55°C ~ 100°C |
| 精确度： | ±2°C（最小值） |
| 拓扑： | 寄存器库，变签式暂存器 |
| 输出类型： | 1-Wire? |
| 输出警报： | 是 |
| 输出风扇： | 无 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -55°C ~ 100°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-226-3、TO-92-3（TO-226AA）成形引线 |
| 供应商设备封装： | TO-92-3 |
| 包装： | 带卷 (TR) |
DS18B20-PAR
2 of 19
DETAILED PIN DESCRIPTIONS Table 1
PIN SYMBOL
DESCRIPTION
1
GND
Ground.
2
DQ
Data Input/Output pin. Open-drain 1-Wire interface pin. Also provides power
to the device when used in parasite power mode (see Parasite Power section.)
3
NC
No Connect. Doesnt connect to internal circuit.
OVERVIEW
The DS18B20-PAR uses Dallas exclusive 1-Wire bus protocol that implements bus communication
using one control signal. The control line requires a weak pullup resistor since all devices are linked to
the bus via a 3-state or open-drain port (the DQ pin in the case of the DS18B20-PAR). In this bus
system, the microprocessor (the master device) identifies and addresses devices on the bus using each
devices unique 64-bit code. Because each device has a unique code, the number of devices that can be
addressed on one bus is virtually unlimited. The 1-Wire bus protocol, including detailed explanations of
the commands and time slots, is covered in the 1-WIRE BUS SYSTEM section of this datasheet.
An important feature of the DS18B20-PAR is its ability to operate without an external power supply.
Power is instead supplied through the 1-Wire pullup resistor via the DQ pin when the bus is high. The
high bus signal also charges an internal capacitor (C
PP
), which then supplies power to the device when the
bus is low. This method of deriving power from the 1-Wire bus is referred to as parasite power.
Figure 1 shows a block diagram of the DS18B20-PAR, and pin descriptions are given in Table 1. The
64-bit ROM stores the devices unique serial code. The scratchpad memory contains the 2-byte
temperature register that stores the digital output from the temperature sensor. In addition, the scratchpad
provides access to the 1-byte upper and lower alarm trigger registers (T
H
and T
L
). The T
H
and T
L
registers are nonvolatile (EEPROM), so they will retain their data when the device is powered down.
DS18B20-PAR BLOCK DIAGRAM Figure 1
C
PP
V
PU
4.7K
64-BIT ROM
AND
1-wire PORT
D
INTERNAL V
DD
PARASITE POWER
CIRCUIT
MEMORY CONTROL
LOGIC
SCRATCHPAD
8-BIT CRC GENERATOR
TEMPERATURE SENSOR
ALARM HIGH TRIGGER (T
H
)
REGISTER (EEPROM)
ALARM LOW TRIGGER (T
L
)
REGISTER (EEPROM)
CONFIGURATION REGISTER
(EEPROM)
GND
DS18B20-PAR
相关PDF资料 |
PDF描述 |
|---|---|
| GBC08DCMN | CONN EDGECARD 16POS .100" WW |
| VE-B1Y-CW-F4 | CONVERTER MOD DC/DC 3.3V 66W |
| MAX6628MTA+T | IC TEMP SENSOR DGTL 8-TDFN |
| VE-B10-CY-F2 | CONVERTER MOD DC/DC 5V 50W |
| XA9536XL-15VQG44Q | IC CPLD 3.3V 36MCELL 44-VQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS18B20-SL | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Programmable Resolution 1-Wire Digital Thermometer |
| DS18B20-SL/T&R | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| DS18B20-SL+T&R | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL SERL (1-WIRE) - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERM MICROLAN PROG-RES TO-92 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr |
| DS18B20-SL+T&R | 功能描述:板上安装温度传感器 Prgmble Resolution 1-Wire Parasite Pwr RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| DS18B20U | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
发布紧急采购，3分钟左右您将得到回复。