DS1620+

The DS1620 measures temperature using a bandgap-based temperature sensor and provides the temperature reading in a 9-bit, two's complement format by issuing a READ TEMPERATURE command. The temperature data is transmitted serially through a 3-wire serial interface, with the LSB transmitted first. The DS1620 can measure temperatures ranging from -55°C to +125°C in 0.5°C increments. For Fahrenheit usage, a lookup table or conversion factor must be used. Temperature data can be written to or read from the DS1620 as a 9-bit word or as two transfers of 8-bit words, with the most significant 7 bits being ignored or set to 0. The temperature is represented in the DS1620 in terms of a 1/2°C LSB, resulting in a 9-bit format. [2, 3]

The DS1620 digital thermometer and thermostat offers various benefits and features for temperature monitoring and control in different applications. It can measure temperatures from -55°C to +125°C in 0.5°C increments, with a Fahrenheit equivalent of -67°F to +257°F in 0.9°F increments [1]. The temperature is read as a 9-bit value and can be converted to a digital word in 750ms maximum [1]. The thermostatic settings are user-definable and nonvolatile [1]. The device can operate in a supply voltage range from 2.7V to 5.5V and data can be read from/written via a 3-wire serial interface (CLK, DQ, RST) [1]. It saves space as it requires no external components and is available in 8-pin DIP or SOIC packages [1]. The DS1620 can be used in various applications such as thermostatic controls, industrial systems, consumer products, and thermometers [1]. The pin assignment includes DQ for 3-wire input/output, CLK/CONV for 3-wire clock input and standalone convert input, RST for 3-wire reset input, and GND for ground [1]. The device also has absolute maximum ratings, including voltage on any pin relative to ground from -0.5V to +6.0V and operating temperature from -55°C to +125°C [2]. The recommended DC operating conditions specify a supply voltage (VDD) range of 2.7V to 5.5V [3]. In conclusion, the DS1620 digital thermometer and thermostat by Maxim Integrated offers a compact and versatile solution for temperature monitoring and control in a wide range of applications, providing accurate temperature measurements and user-defined thermostatic settings. [1, 2, 3]

The DS1620 Digital Thermometer and Thermostat can measure temperatures over the range of -55°C to +125°C in 0.5°C increments. For Fahrenheit usage, a lookup table or conversion factor must be used. [1]

The three thermal alarm outputs provided by the DS1620 Digital Thermometer and Thermostat are T HIGH, T LOW, and T COM. [1]