DS75LVU+ Maxim Integrated Products, DS75LVU+ Datasheet
DS75LVU+
Specifications of DS75LVU+
Related parts for DS75LVU+
DS75LVU+ Summary of contents
Page 1
... HYST Temperature-Sensing Applications Pin/Software Compatible with the LM75 Available in 8-Pin μSOP (μMAX) and SO Packages ORDERING INFORMATION DS75LVS+ DS75LVS+T&R DS75LVU+ DS75LVU+T&R Ordering Information continued at the end of the data sheet DS75LV PART TEMP RANGE -55°C to +125°C -55°C to +125°C -55°C to +125°C -55° ...
Page 2
ABSOLUTE MAXIMUM RATINGS* Voltage Relative to Ground DD Voltage on Any Other Pin, Relative to Ground Operating Temperature Range Storage Temperature Range Soldering Temperature These are stress ratings only and functional operation of the device at these ...
Page 3
Falling SCL Low Period of SCL High Period of SCL Repeated START Condition Setup Time to Rising SCL Data-Out Hold Time from Falling SCL Data-In Setup Time to Rising SCL Rise Time of SDA and SCL (Receive) Fall Time of ...
Page 4
Figure 1. DS75LV Functional Block Diagram PRECISION REFERENCE V DD SCL SDA ADDRESS AND I/O CONTROL GND Figure 2. Timing Diagram DS75LV: Digital Thermometer and Thermostat OVERSAMPLING DIGITAL MODULATOR DECIMATOR CONFIGURATION REGISTER TEMPERATURE REGISTER ...
Page 5
OPERATION⎯MEASURING TEMPERATURE The DS75LV measures temperature using a bandgap temperature sensing architecture. An on-board delta-sigma analog-to-digital converter (ADC) converts the measured temperature to a digital value that is calibrated in degrees centigrade; for Fahrenheit applications a lookup table or conversion ...
Page 6
OPERATION⎯THERMOSTAT The DS75LV thermostat has two operating modes, comparator mode and interrupt mode, which activate and deactivate the open-drain thermostat output (O.S.) based on user-programmable trip-points (T DS75LV powers up with the thermostat in comparator mode, active-low O.S. polarity, over-temperature ...
Page 7
Figure 4. O.S. OUTPUT Operation Example In this example the DS75LV is configured to have a fault tolerance of 2. Temperature O.S. Output - Comparator Mode O.S. Output - Interrupt Mode CONFIGURATION REGISTER The configuration register allows the user to ...
Page 8
Table 3. Configuration Register Bit Descriptions BIT NAME 0 Reserved R1 Conversion Resolution Bit 1 R0 Conversion Resolution Bit 0 F1 Thermostat Fault Tolerance Bit 1 F0 Thermostat Fault Tolerance Bit 0 POL Thermostat Output (O.S.) Polarity TM Thermostat Operating ...
Page 9
REGISTER POINTER The four DS75LV registers each have a unique two-bit pointer designation, which is defined in Table 6. When reading from or writing to the DS75LV, the user must “point” the DS75LV to the register that ...
Page 10
Address Byte: The control byte is transmitted by the master and consists of the 7-bit slave address plus a read/write (R/W ¯ ¯) bit (see Figure 7). If the master is going to read data from the slave device then ...
Page 11
Software POR—The soft power on reset (POR) command is 54h. The master sends a START followed by an address byte containing the DS75LV bus address. The R/W bit must The DS75LV will respond with an ACK. If ...
Page 12
Figure 9. 2-Wire Interface Timing DS75LV: Digital Thermometer and Thermostat ...
Page 13
... ORDERING INFORMATION PART TEMP RANGE DS75LVS+ -55°C to +125°C DS75LVS+T&R -55°C to +125°C DS75LVU+ -55°C to +125°C DS75LVU+T& -55°C to +125°C R DS75LVS -55°C to +125°C DS75LVS/T&R -55°C to +125°C DS75LVU -55°C to +125°C DS75LVU/T&R -55°C to +125° “+” symbol is also marked on the package near the pin 1 indicator. ...