DS4026S+PCC Maxim Integrated, DS4026S+PCC Datasheet

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DS4026S+PCC

Manufacturer Part Number
DS4026S+PCC
Description
TCXO Oscillators
Manufacturer
Maxim Integrated
Series
DS4026r
Datasheet

Specifications of DS4026S+PCC

Package / Case
SOIC-16 Wide
Frequency
40 MHz
Supply Voltage
3.3 V
Minimum Operating Temperature
0 C
Maximum Operating Temperature
+ 70 C
Supply Voltage - Max
3.465 V
The DS4026 is a temperature-compensated crystal
oscillator (TCXO) that provides ±1ppm frequency stabili-
ty 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). 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 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 20 years. The device also
provides an I
of the output frequency by a minimum of ±8ppm
(±5ppm for 10MHz) with typical 1ppb resolution.
The DS4026 implements a temperature-to-voltage con-
version 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 I
nicate with the DS4026 performs temperature readings
and frequency push-pull.
Reference Clock Generation
Telecom/Datacom/SATCOM
Rev 2; 4/08
Ordering Information continued at end of data sheet.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
*The top mark will include a “+” for a lead(Pb)-free/RoHS-compliant device.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
DS4026S+ACC
DS4026S+ACN
DS4026S+BCC
DS4026S+BCN
DS4026S+ECC
DS4026S+ECN
DS4026S+FCC
DS4026S+FCN
PART
2
C interface to allow pushing and pulling
________________________________________________________________ Maxim Integrated Products
General Description
2
C interface used to commu-
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Wireless
Test and Measurement
Applications
10MHz to 51.84MHz TCXO
(MHz, CMOS)
OUTPUT (f
16.384
16.384
10.00
10.00
12.80
12.80
16.80
16.80
♦ ±1ppm Frequency Accuracy Over -40°C to +85°C
♦ Standard Frequencies: 10, 12.8, 19.44, 20, 38.88,
♦ Stratum 3 Frequencies: 10, 12.8, 19.2, 20MHz
♦ Maximum ±4.6ppm Deviation Over 20 Years
♦ Minimum ±8ppm (±5ppm for 10MHz) Digital
♦ Surface-Mount 16-Pin SO Package
♦ Pb Free/RoHS Compliant
C
40, 51.84MHz
Frequency Tuning Through I
)
TOP VIEW
GNDOSC
16 SO
16 SO
16 SO
16 SO
16 SO
16 SO
16 SO
16 SO
PIN-PACKAGE
GNDA
V
V
N.C.
N.C.
N.C.
V
OSC
REF
CC
1
2
6
3
4
5
7
8
+
Ordering Information
DS4026
Pin Configuration
2
C Interface
16
15
14
13
12
11
10
9
V
FOUT
GNDD
SCL
SDA
GND
N.C.
N.C.
CCD
DS4026-ACC
DS4026-ACN
DS4026-BCC
DS4026-BCN
DS4026-ECC
DS4026-ECN
DS4026-FCC
DS4026-FCN
TOP MARK*
Features
1

Related parts for DS4026S+PCC

DS4026S+PCC Summary of contents

Page 1

... Ordering Information continued at end of data sheet. + Denotes a lead(Pb)-free/RoHS-compliant package. *The top mark will include a “+” for a lead(Pb)-free/RoHS-compliant device. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ...

Page 2

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 ...

Page 3

AC ELECTRICAL CHARACTERISTICS—TCXO (V = 3.135V to 3.465V -40°C to +85°C, unless otherwise noted.) (Note PARAMETER SYMBOL Frequency Stability vs. Temperature f VOLTAGE Frequency Stability vs. Voltage First Year Aging f AGING Years 2–20 Except ...

Page 4

TCXO TEMPERATURE SENSOR ELECTRICAL CHARACTERISTICS (V = 3.135V to 3.465V -40°C to +85°C, unless otherwise noted.) (Note PARAMETER SYMBOL Temperature Sensor Accuracy Temperature Sensor Conversion t CONVT Time Temperature Sensor Resolution AC ...

Page 5

AC ELECTRICAL CHARACTERISTICS— 3.135V to 3.465V -40°C to +85°C, unless otherwise noted.) (Note PARAMETER SYMBOL Capacitive Load for Each Bus Line (Note 14) Pulse Width of Spikes That Must Be Suppressed by the ...

Page 6

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 ...

Page 7

PIN NAME 1 GNDA Ground for DAC 2 V Voltage Reference Output. This pin must be decoupled with a 100μF ceramic capacitor to ground. REF Power Supply for Digital Control and Temperature Sensor. This pin must be decoupled with a ...

Page 8

TCXO V CC TEMP SENSOR GND V CC SCL INTERFACE SDA GND V OSC Figure 2. Functional Diagram Detailed Description The DS4026 is a TCXO capable of operating at 3.3V ±5%, and it allows ...

Page 9

The output driver is a CMOS square-wave output with symmetrical rise and fall time. The temperature sensor provides a 12-bit temperature reading with a resolution of 0.0625°C. The sensor is in continuous conversion mode. If DCOMP is set, conver- sions ...

Page 10

TCXO Table 1. Register Map ADDRESS BIT 7 BIT 6 00 DCOMP SIGN 01 02 SIGN 03 In the temperature register (see the Temperature Register (02h–03h) table), temperature is represented as a 12-bit code and is accessible ...

Page 11

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: ...

Page 12

TCXO The DS4026 can operate in the following two modes: Slave receiver mode (write mode): Serial data and clock are received through SDA and SCL. After each byte is received, an acknowledge bit is transmitted. START and ...

Page 13

... DS4026S+HCN -40°C to +85°C DS4026S+JCC 0°C to +70°C DS4026S+JCN -40°C to +85°C DS4026S+MCC 0°C to +70°C DS4026S+MCN -40°C to +85°C DS4026S+PCC 0°C to +70°C DS4026S+PCN -40°C to +85°C DS4026S+QCC 0°C to +70°C DS4026S+QCN -40°C to +85°C DS4026S+RCC 0°C to +70°C DS4026S+RCN -40° ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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