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参数资料
| 型号： | DS1621V/T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/16页 |
| 文件大小： | 337K |
| 描述： | IC THERMOMETER/STAT DIG 8-SOIC |
| 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 ~ 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： | I²C?/SMBus? |
| 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-SOIC（0.209"，5.30mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
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FEATURES
?Temperature measurements require no
external components
?Measures temperatures from -55癈 to +125癈
in 0.5癈 increments. Fahrenheit equivalent is
-67癋 to 257癋 in 0.9癋 increments
?Temperature is read as a 9-bit value (2-byte
transfer)
?Wide power supply range (2.7V to 5.5V)
?Converts temperature to digital word in less
than 1 second
?Thermostatic settings are user definable and
nonvolatile
?Data is read from/written via a 2-wire serial
interface (open drain I/O lines)
?Applications include thermostatic controls,
industrial systems, consumer products,
thermometers, or any thermal sensitive
system
?8-pin DIP or SO package (150mil and
208mil)
PIN ASSIGNMENT
PIN DESCRIPTION
SDA
- 2-Wire Serial Data Input/Output
SCL
- 2-Wire Serial Clock
GND
- Ground
T
OUT
- Thermostat Output Signal
A0
- Chip Address Input
A1
- Chip Address Input
A2
- Chip Address Input
V
DD
- Power Supply Voltage
DESCRIPTION
The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate
the temperature of the device. The thermal alarm output, T
OUT
, is active when the temperature of the
device exceeds a user-defined temperature TH. The output remains active until the temperature drops
below user defined temperature TL, allowing for any hysteresis necessary.
User-defined temperature settings are stored in nonvolatile memory so parts may be programmed prior to
insertion in a system. Temperature settings and temperature readings are all communicated to/from the
DS1621 over a simple 2-wire serial interface.
DS1621
Digital Thermometer and Thermostat
6
3
1
7
SDA
T
OUT
GND
V
DD
0
1
A
2
DS1621S 8-PIN SO (150mil)
DS1621V 8-PIN SO (208mil)
6
3
1
7
SDA
SCL
T
GND
V
DD
0
1
A
2
DS1621 8-PIN DIP (300mil)
SCL
090905
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