ds4026 Maxim Integrated Products, Inc., ds4026 Datasheet
ds4026
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ds4026 Summary of contents
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... Contact the factory for cus- tom frequencies. The DS4026 provides excellent phase-noise characteris- tics. The output is a push-pull CMOS square wave with symmetrical rise and fall times. In addition, the DS4026 is designed to provide a maximum frequency deviation of less than ±4.6ppm over 10 years. The device also pro- 2 ...
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TCXO ABSOLUTE MAXIMUM RATINGS Voltage Range and V CC CCD OSC Relative to Ground..............................................-0.3V to +3.8V Voltage Range on SDA, SCL, and FOUT Relative to Ground...................................-0. Stresses beyond those listed ...
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AC ELECTRICAL CHARACTERISTICS (Note 3.135V to 3.465V -40°C to +85°C, unless otherwise noted PARAMETER SYMBOL Frequency Stability vs. Δf Temperature Frequency Stability vs. Voltage Aging, First Year Aging, Years 2–15 Except 10MHz Frequency ...
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TCXO TEMPERATURE SENSOR ELECTRICAL CHARACTERISTICS (Note 3.135V to 3.465V -40°C to +85°C, unless otherwise noted PARAMETER SYMBOL Temperature Sensor Accuracy Temperature Sensor Conversion t CONVT Time Temperature Sensor Resolution AC ...
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AC ELECTRICAL CHARACTERISTICS (continued 3.135V to 3.465V -40°C to +85°C, unless otherwise noted.) (Note PARAMETER SYMBOL Setup Time for STOP Condition t SU:STO Pin Capacitance SDA, SCL (Note 5) Capacitive Load for Each ...
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TCXO (V = +3.3V +25°C, unless otherwise noted ACTIVE-SUPPLY CURRENT vs. POWER-SUPPLY CURRENT 1.6 1.5 1.4 1.3 12.8 51.84 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 3.0 ...
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... A 20Ω resistor must be placed in series between the power supply and V 100μF ±5% CERAMIC 0.1μF Figure 1. Typical Operating Circuit 10MHz to 51.84MHz TCXO FUNCTION 2 C Interface and is used to synchronize data GNDA V CCD FOUT V GNDD REF DS4026 V SCL CC SDA V OSC 0.1μF GNDOSC GND N.C. N.C. N.C. N.C. N.C. _____________________________________________________________________ ...
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... GND V OSC Figure 2. Functional Diagram Detailed Description The DS4026 is a TCXO capable of operating at 3.3V ±5%, and it allows digital tuning of the fundamental fre- quency. The device is calibrated in the factory to achieve an accuracy of ±1ppm over the industrial tem- perature range, and its minimum pullability is ±8ppm with a typical resolution of 1ppb (typ) per LSB ...
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... The monotonic DAC provides an analog voltage based on temperature compensation to drive the variable capacitor. The DS4026 operates as a slave device on the serial bus. Access is obtained by implementing a START condition and providing a device identification code fol- lowed by data. Subsequent registers can be accessed sequentially until a STOP condition is executed ...
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... I/O lines SDA and SCL. Within the bus specifications, a standard mode (100kHz maximum clock rate) and a fast mode (400kHz maximum clock rate) are defined. The DS4026 works in both modes. The following bus protocol has been defined (Figure 3): • ...
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During data transfer, the data line must remain stable whenever the clock line is high. Changes in the data line while the clock line is high are interpreted as control signals. Accordingly, the following bus conditions have been defined: ...
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... However, in this mode, the direction bit indi- cates that the transfer direction is reversed. Serial data is transmitted on SDA by the DS4026 while the serial clock is input on SCL. START and STOP condi- tions are recognized as the beginning and end of a serial transfer ...
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... Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2007 Maxim Integrated Products is a registered trademark of Dallas Semiconductor Corporation. 10MHz to 51.84MHz TCXO Package Information For the latest package outline information www.maxim-ic.com/packages. PACKAGE TYPE 16-pin SO (300 mils registered trademark of Maxim Integrated Products, Inc. DOCUMENT NO. 56-G4009-001 ...