ds1847b-050t-r Maxim Integrated Products, Inc., ds1847b-050t-r Datasheet
ds1847b-050t-r
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ds1847b-050t-r Summary of contents
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FEATURES § Two linear taper, temperature-controlled variable resistors § DS1847-050 - One 50kW, 256 position - One 10kW, 256 position § DS1847-010 - Two 10kW, 256 position § Resistor settings changeable every 2°C § Access to temperature data and ...
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PIN DESCRIPTIONS Name TSSOP BGA GND 7 D1 SDA 1 B2 SCL ...
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DS1847 BLOCK DIAGRAM Figure 2-Wire SDA Interface SCL V CC Gnd Digital Temperature Sensor 72x8 bit 72x8 bit 0h EEPROM EEPROM Resistor 0 Resistor 1 Look-up Table Look-up Table 47h (Table 2) (Table 1) E0h ...
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Memory Name of Location Location 00h to 47h User Defined Look-Up Table (LUT) (Table Select Byte, E0h, must be set to 01h or 02h to access the Look-Up Tables) E0h Table Select Byte E1h Configuration Byte Function of Location This ...
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Memory Name of Location Location E2h Temperature MSB E3h Temperature LSB E4h Address Pointer E5h to E6h User Memory E7h Address Select E8h to EFh User Memory F0h Resistor 0 Setting F1h Resistor 1 Setting F2h to FFh User memory ...
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PROGRAMMING THE LOOK-UP TABLE (LUT) The following equation can be used to determine which resistor position setting, 00h – FFh, should be written in the LUT to achieve a given resistance at a specific temperature. pos ( DS1847-050 a = ...
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TEMPERATURE CONVERSION The direct-to-digital temperature sensor measures temperature through the use of an on-chip temperature measurement technique with an operating range from -40°C to +95°C. Temperature conversions are initiated upon power-up, and the most recent result is stored in address ...
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OPERATION Clock and Data Transitions: The SDA pin is normally pulled high with an external resistor or device. Data on the SDA pin may only change during SCL low time periods. Data changes during SCL high periods will indicate ...
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The master must terminate the write cycle with a STOP condition or the data clocked into the DS1847 will not be latched into permanent memory. Acknowledge Polling: Once the internally-timed write has started and the DS1847 inputs are disabled, acknowledge ...
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SERIAL PORT OPERATION The 2-wire serial port interface supports a bi-directional data transmission protocol with device addressing. A device that sends data on the bus is defined as a transmitter, and a device receiving data as a receiver. The ...
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In this case, the slave must leave the data line HIGH to enable the master to generate the STOP condition. 1. ...
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DATA TRANSFER PROTOCOL Figure 3 2-WIRE AC CHARACTERISTICS Figure ...
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ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Programming Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated ...
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ANALOG RESISTOR CHARACTERISTICS (-40°C to +95°C; V PARAMETER SYMBOL Absolute Error Position FFh Resistance DS1847-050 DS1847-050 DS1847-010 Position 00h Resistance DS1847-050 DS1847-050 DS1847-010 Absolute Linearity Relative Linearity Compensated Tempco Error Uncompensated Tempco DIGITAL THERMOMETER PARAMETER Thermometer Error Conversion Time CONDITION ...
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AC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL SCL clock frequency Bus free time between STOP and START Hold time (repeated) START condition Low period of SCL clock High period of SCL clock Data hold time Data set-up time Start set-up time Rise ...
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NOTES : 1. All voltages are referenced to ground. 2. Inputs SDA = SCL = Valid only. ° 4. Absolute linearity is the difference of measured value from expected value at DAC position. ...
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... DS1847E-010/T&R 14-PIN TSSOP/TAPE & REEL DS1847E-050/T&R 14-PIN TSSOP/TAPE & REEL DS1847B-010 DS1847B-050 DS1847B-010+ DS1847B-010+T&R 16-BALL CSBGA LF T&R DS1847B-010/T&R DS1847B-050+ DS1847B-050+T&R 16-BALL CSBGA LF T&R DS1847B-050/T&R DS1847E-010+ 14-PIN TSSOP LF (173-MIL) DS1847E-010+T&R DS1847E-050+ 14-PIN TSSOP LF (173-MIL) DS1847E-050+T&R + Denotes lead-free package ...