DS4026 10MHz to 51.84MHz TCXO

Description

The DS4026 is a temperature-compensated crystal oscillator (TCXO) that provides ±1ppm frequency stability over the -40°C to +85°C industrial temperature range. The DS4026 is also available in Stratum 3 versions (see the Ordering Information—Stratum 3 table in the full data sheet). Each device is factory calibrated over temperature to achieve the ±1ppm frequency stability. Standard frequencies for the device include 10, 12.8, 19.44, 20, 38.88, 40, and 51.84MHz. Contact the factory for custom frequencies.

The DS4026 provides excellent phase-noise characteristics. 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 20 years. The device also provides an I²C interface to allow pushing and pulling of the output frequency by a minimum of ±8ppm (±5ppm for 10MHz) with typical 1ppb resolution.

The DS4026 implements a temperature-to-voltage conversion with a nonlinear relationship. The output from the temperature-to-voltage converter is used to drive the voltage-controlled crystal oscillator to compensate for frequency change.

The device implements an on-chip temperature sensor lookup table, and a digital-to-analog converter (DAC) to adjust the frequency. An I²C interface used to communicate with the DS4026 performs temperature readings and frequency push-pull.

Key Features

Applications/Uses

±1ppm Frequency Accuracy Over -40°C to +85°C
Standard Frequencies: 10, 12.8, 19.44, 20, 38.88, 40, 51.84MHz
Stratum 3 Frequencies: 10, 12.8, 19.2, 20MHz
Maximum ±4.6ppm Deviation Over 20 Years
Minimum ±8ppm (±5ppm for 10MHz) Digital Frequency Tuning Through I²C Interface
Surface-Mount 16-Pin SO Package
Pb Free/RoHS Compliant

	Reference Clock Generation
	Telecom/Datacom/SatCom
	Test and Measurement
	Wireless

Key Specifications: Oscillator Modules

Part Number

Frequency

Oscillator Type

Tuning Adjustment Type

Frequency Output Type

Freq. Stability vs. Temp. @-40 to +85°C (±ppm)

Frequency Stability vs. Supply Voltage (±ppm/V)

Frequency Stability vs. Aging (±ppm)

Supply Voltage (V)

Price^**

DS4026

12.8MHz
19.44MHz
20MHz
38.88MHz
40MHz
51.84MHz

TCXO

Digital

CMOS Push-Pull

±2 (max)

2 (2-15 Years)

3.3 ±5%

$31.60 @ 1k

See All Oscillator Modules (28)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
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Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-27 of 27

DS4026

Notes

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Sample

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Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

DS4026S+ACC

10MHz