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DS75LVUTR Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS75LVUTR Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 13 page  1 of 13 051106 DESCRIPTION This low-voltage (1.7V to 3.7V) digital thermometer and thermostat provides 9-, 10-, 11-, or 12-bit digital temperature readings over a -55°C to +125°C range with ±2°C accuracy over a -25°C to +100°C range. At power-up, the DS75LV defaults to 9-bit resolution for software compatibility with the LM75. Communication with the DS75LV is achieved through a simple 2-wire serial interface. Three address pins allow up to eight DS75LV devices to operate on the same 2-wire bus, which greatly simplifies distributed temperature- sensing applications. The DS75LV thermostat has a dedicated open-drain output (O.S.) and programmable fault tolerance, which allows the user to define the number of consecutive error conditions that must occur before O.S is activated. There are two thermostatic operating modes that control thermostat operation based on user-defined trip-points (TOS and THYST). A block diagram of the DS75LV is shown in Figure 1 and detailed pin descriptions are given in Table 2. APPLICATIONS Personal Computers Cellular Base Stations Office Equipment Any Thermally Sensitive System PIN CONFIGURATION FEATURES § Operating Range from 1.7V to 3.7V § Temperature Measurements Require No External Components § Measures Temperatures from -55°C to +125°C (-67°F to +257°F) § ±2°C Accuracy Over a -25°C to +100°C Range § Thermometer Resolution is User- Configurable from 9 (Default) to 12 Bits (0.5°C to 0.0625°C Resolution) § 9-Bit Conversion Time is 25ms (Max) § Thermostatic Settings are User-Definable § Data Read/Write Occurs Through a 2-Wire Serial Interface (SDA and SCL Pins) § Data Lines Filtered Internally for Noise Immunity (50ns Deglitch) § Bus Timeout Feature Prevents Lockup Problems on 2-Wire Interface § Multidrop Capability Simplifies Distributed Temperature-Sensing Applications § Pin/Software Compatible with the LM75 § Available in 8-Pin mSOP (mMAX) and SO Packages ORDERING INFORMATION PART TEMP RANGE PIN-PACKAGE DS75LVS+ -55°C to +125°C DS75LV (150-mil) 8-SO DS75LVS+T&R -55°C to +125°C DS75LV (150-mil) 8-SO, 2500 Piece Tape-and-Reel DS75LVU+ -55°C to +125°C DS75LV 8-µSOP (µMAX) DS75LVU+T&R -55°C to +125°C DS75LV 8-µSOP (µMAX), 3000 Piece Tape- and-Reel Ordering Information continued at the end of the data sheet. DS75LV Digital Thermometer and Thermostat www.maxim-ic.com DS75LVU— mSOP/mMAX SCL VDD A0 A1 A2 GND O.S. SDA 6 8 7 5 3 1 2 4 DS75LVS—SO (150 mils) SCL VDD A0 A1 A2 GND O.S. SDA 6 8 7 5 3 1 2 4 |
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