DS1722U+T&R Maxim Integrated Products, DS1722U+T&R Datasheet
DS1722U+T&R
Specifications of DS1722U+T&R
Related parts for DS1722U+T&R
DS1722U+T&R Summary of contents
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FEATURES Temperature Measurements Require No External Components Measures Temperatures from -55°C to +120°C. Fahrenheit Equivalent is -67°F to +248°F Thermometer Accuracy is ±2.0°C Thermometer Resolution is Configurable from bits (1.0°C to 0.0625°C Resolution) Data is Read ...
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ORDERING INFORMATION Table 1 PART MARKING DS1722S DS1722 DS1722S/T&R DS1722 DS1722S+ DS1722 (See note) DS1722S+T&R DS1722 (See note) DS1722U 1722 DS1722U/T&R 1722 DS1722U+ 1722 (See note) DS1722U+T&R 1722 (See note) Note: A “+” will also be marked on the package ...
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OVERVIEW A block diagram of the DS1722 is shown in Figure 1. The DS1722 consists of four major components: 1. Precision temperature sensor 2. Analog-to-digital converter 3. SPI/3-wire interface electronics 4. Data registers The factory-calibrated temperature sensor requires no external ...
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DS1722 FUNCTIONAL BLOCK DIAGRAM Figure 1 OPERATION-Measuring Temperature The core of DS1722 functionality is its direct-to-digital temperature sensor. The DS1722 measures temperature through the use of an on-chip temperature measurement technique with an operating range from -55° to +120°C. The ...
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Temperature/Data Relationships Table MSb - TEMPERATURE +120°C +25.0625°C +10.125°C +0.5°C 0°C -0.5°C -10.125°C -25.0625°C -55°C OPERATION-Programming The area of interest in programming the DS1722 is the Configuration register. All programming is ...
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CONFIGURATION/STATUS REGISTER Figure MSb 1SHOT = One-shot temperature conversion bit. conversions are not taking place), a "1" written to the 1SHOT bit will cause the DS1722 to perform one temperature conversion and store the results in the ...
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SCLK when CE becomes active. Therefore, either SCLK polarity can be accommodated. Input data (SDI) is latched on the internal strobe edge and output data (SDO) is shifted out on the shift edge (See ...
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SPI SINGLE BYTE WRITE Figure 4 SPI SINGLE-BYTE READ Figure 5 The address byte is always the first byte entered after CE is driven high. The most significant bit (A7) of this byte determines if a read or write will ...
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SERIAL DATA BUS The 3-wire communication mode operates similar to the SPI mode. However, in 3-wire mode, there is one bi-directional I/O instead of separate data in and data out signals. The 3-wire consists of the I/O (SDI and ...
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ABSOLUTE MAXIMUM RATINGS* Voltage Relative to Ground DD Voltage on any other pin, Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these ...
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ELECTRICAL CHARACTERISTICS: DIGITAL THERMOMETER PARAMETER SYMBOL Thermometer Error Resolution Conversion Time AC ELECTRICAL CHARACTERISTICS: 3-WIRE INTERFACE PARAMETER Data to SCLK Setup SCLK to Data Hold SCLK to Data Valid SCLK Low Time SCLK High Time SCLK Frequency SCLK Rise and ...
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TIMING DIAGRAM: 3-WIRE WRITE DATA TRANSFER Figure 10 *I/O is SDI and SDO tied together. AC ELECTRICAL CHARACTERISTICS: SPI Interface PARAMETER SYMBOL Data to SCLK Setup SCLK to Data Hold SCLK to Data Valid SCLK Low Time SCLK High Time ...
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TIMING DIAGRAM: SPI WRITE DATA TRANSFER Figure 12 *SCLK can be either polarity, timing shown for CPOL = 1. NOTES: 1. All voltages are referenced to ground. 2. Logic 0 voltages are specified at a sink current of 3 mA. ...
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TYPICAL DS1722 THERMOMETER ERROR 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0 -20 -15 -10 -5 -0.25 -0.5 -0.75 -1 -1.25 -1.5 -1.75 -2 REVISION HISTORY REVISION DATE 052307 Initial release. 103007 Various changes. 022008 Deleted all references to ...