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参数资料
| 型号： | DS1626U+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 7/12页 |
| 文件大小： | 141K |
| 描述： | IC THERMOMETER/STAT DIG 8-USOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 功能： | 温度计，恒温计 |
| 传感器类型： | 内部 |
| 感应温度： | -55°C ~ 125°C |
| 精确度： | ±2°C（最小值） |
| 拓扑： | ADC（三角积分型），比较器，寄存器库 |
| 输出类型： | 3 线串行 |
| 输出警报： | 是 |
| 输出风扇： | 无 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
DS1626/DS1726
7 of 12
Table 2. 12-BIT RESOLUTION TEMPERATURE/DATA RELATIONSHIP
TEMPERATURE (?/SPAN>C)
DIGITAL OUTPUT
(BINARY)
DIGITAL OUTPUT
(HEX)
+125
0111 1101 0000
7D0h
+25.0625
0001 1001 0001
191h
+10.125
0000 1010 0010
0A2h
+0.5
0000 0000 1000
008h
0
0000 0000 0000
000h
-0.5
1111 1111 1000
FF8h
-10.125
1111 0101 1110
F5Eh
-25.0625
1110 0110 1111
E6Fh
-55
1100 1001 0000
C90h
OPERATIONTHERMOSTAT FUNCTION
The DS1626/DS1726 thermostat outputs (T
HIGH
, T
LOW
, and T
COM
) are updated after every temperature
conversion and remain at the updated values until the next conversion completes. T
HIGH
is
asserted when
the measured temperature is higher than or equal to the value stored in the T
H
register, and T
LOW
is
asserted when the temperature is equal to or falls below the value in the T
L
register (see Figure 5). T
COM
uses both T
H
and T
L
to provide programmable hysteresis: when the measured temperature equals or
exceeds T
H
, T
COM
is asserted and it remains asserted until the temperature falls to a value equal to or
below T
L
. All three thermostat outputs are active-high outputs.
The Write TH and Write TL commands are used to program the 12-bit T
H
and T
L
registers with user-
defined twos complement values. The MSb (bit 11) of each register contains the twos complement sign
bit (S). For the T
COM
thermostat output to function correctly, the T
L
value must be less than the T
H
value.
Any unused LSbs in the T
H
and T
L
registers are forced to 0 regardless of the data written to those bits.
The unused LSbs are determined by the conversion resolution set by R1 and R0 in the configuration
register. Therefore, for 9-bit conversions bits 2 through 0 will be 0, for 10-bit conversions bit 1 and bit 0
will be 0, and for 11-bit conversions bit 0 will be 0. All bits are used for 12-bit conversions, so no bits are
forced to 0. However, regardless of the conversion resolution, when writing to T
H
or T
L
at least 12 bits
must be sent following the Write TH or Write TL commands. The reason is that data written to T
H
and T
L
is not saved to EEPROM until the DS1626/DS1726 have received 12 bits, so if the operation is
terminated before 12 bits have been received, the data will be lost. Any additional bits sent after the first
twelve are ignored (e.g., if two 8-bit words are written).
Another DS1626/DS1726 thermostat feature is the temperature-high flag (THF) and temperature-low flag
(TLF) in the configuration register. These bits provide a record of whether the temperature has been
greater than or equal to T
H
or less than or equal to T
L
at any time since the DS1626/DS1726 were
powered up. If the temperature is greater than or equal to the T
H
register value, the THF bit in the
configuration register will be set to 1. If the temperature is less than or equal to the T
L
register value, the
TLF bit in the configuration register will be set to 1. Once THF and/or TLF has been set, it will remain
set until the user overwrites it with a 0 or until the power is cycled.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1628 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Octal TRI-STATE MOS Drivers |
| DS1628J | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Octal TRI-STATE MOS Drivers |
| DS1628J/A+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Memory Driver |
| DS1629 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:2-Wire Digital Thermometer and Real Time Clock |
| DS1629S | 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 |
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