ABX0027MSC-T - Abracon Corporation

Preliminary ABX0027M

Dual XO with 4 CMOS Outputs 10MHz to 52MHz

30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1

FEATURES

• Generates 4 CMOS outputs from 2 crystal inputs

• XIN1- Accepts a 10 to 52MHz crystal input

and generates 1 CMOS output at the same

frequency.

• XIN2- Accepts a 10 to 52MHz crystal input

and generates 3 CMOS outputs at the same

frequency.

• Low phase noise (-130 dBc @ 10kHz offset).

• Low jitter (RMS): 2.5ps period jitter.

• 12mA drive capability at TTL output.

• 1.62V to 3.63V DC operation.

• Available in 14 pin 150mil SOIC.

DESCRIPTION

The ABX0027M is part of Abracon ’s low cost family

of XO IC’s, designed to replace multiple XO

solutions saving the cost and board space of clock

distribution buffers. In addition, this product family

provides among the lowest current on the market for

the 10MHz to 52MHz range. They accept input

crystals from 10MHz to 52MHz (fundamental

resonant mode) and provide low phase noise (<-

130dBc at 10kHz offset at 30MHz), and very low

jitter (2.5 ps RMS period jitter) outputs.

PIN ASSIGNMENT

ABX0027M

14 XOUT1

N/C

VDD

CLK1

GND

CLK2C

XIN2

XIN1

GND

CLK2A

VDD

CLK2B

XOUT2

BLOCK DIAGRAM

CLK2A

CLK2B

CLK2C

CLK1

XIN1

XOUT1

XIN2

XOUT2 XTAL

OSC

XTAL

OSC

Preliminary ABX0027M

Dual XO with 4 CMOS Outputs 10MHz to 52MHz

30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 2

PIN DESCRIPTION

Name Pin # Type Description

XIN1 1 I Crystal input.

GND 2,3,10 P Ground.

CLK2[A:C] 4,6,9 O Buffered output from XIN2 crystal input.

VDD 5,12 P Power supply.

XOUT2 7 O Crystal output for XIN2 crystal.

XIN2 8 I Crystal input.

CLK1 11 O Buffered output from XIN1 crystal input.

N/C 13 - No connection.

XOUT1 14 O Crystal output for XIN1 crystal.

ELECTRICAL SPECIFICATIONS

1. Absolute Maximum Ratings

PARAMETERS SYMBOL MIN. MAX. UNITS

Supply Voltage VDD 4.6 V

Input Voltage, dc VI -0.5 VDD+0.5 V

Output Voltag e, dc VO -0.5 VDD+0.5 V

Storage Temperature TS -65 150

°C

Ambient Operating Tempera ture* TA -40 85 °C

Junction Temperature TJ 125

°C

Lead Temperature ( soldering, 10s) 260 °C

ESD Protection, Human Body Model 2 kV

Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extende d periods may cause permanent damage to the

device and affect produc t reliability. These conditions represen t a stress rating only, an d functional operatio ns of the device at these or any other

conditions above the operational limits noted in this specification is not implied.

* Note: Opera ting Temperature is guaran teed by design for a ll parts (C OMMERCIAL and INDUSTRIAL ), but tested for COMMERCIAL grade only.

2. AC Electrical Specifications

PARAMETERS CONDITIONS MIN. TYP. MAX. UNITS

Input Crystal Frequency

( XIN1 and XIN2 ) 10 52 MHz

Settling time At power-up

(Vdd reaches 1.62V) 10 ms

0.8V ~ 2.0V with 1 0 pF load 1.15

Output Clock Rise/Fall Time 0.3V ~ 3.0V with 1 5 pF load 2.4 ns

VDD sensitivity Frequency vs. VDD +/- 10% 0.8 0.8 ppm

Output Clock Duty Cycle Measured @ 1.4V 45 50 55 %

Short Circuit Current ±50 mA

Preliminary ABX0027M

Dual XO with 4 CMOS Outputs 10MHz to 52MHz

30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 3

3. Jitter and Phase Noise Specifications

PARAMETERS CONDITIONS MIN. TYP. MAX. UNITS

RMS Period Jitter

(1 sigma – 1000 samp les) With capacitive deco upling

between VDD and GND. 2.1 2.5 ps

Phase Noise rela tive to carrier 30MHz @100Hz off set -80 dBc/Hz

Phase Noise rela tive to carrier 30MHz @1kHz offset -110 dBc/Hz

Phase Noise rela tive to carrier 30MHz @10kHz offset -130 dBc/Hz

Phase Noise rela tive to carrier 30MHz @100kHz offset -138 dBc/Hz

Phase Noise rela tive to carrier 30MHz @1MHz offset -145 dBc/Hz

4. DC Specifications

PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS

Supply Current, Dynam ic,

with Loaded O utputs

@ 3.3V IDD XIN1 and XIN2 at 27MHz,

Cload=10pF

6.0 mA

Supply Current in tri-stat e IDD Output disabled 520

µA

Operating Voltage VDD 1.62 3.63 V

Output High Voltage VOH IOH = -12mA (3.3V) 2.4 V

Output Low Volta ge VOL IOL = 12mA (3.3V) 0.4 V

Output High Voltage at

CMOS level VOHC IOH = -4mA (3.3V) VDD – 0.4 V

Output drive current At TTL level (3.3V) 10 mA

5. Crystal Specification

PARAMETERS SYMBOL MIN. TYP. MAX. UNITS

FXIN1

Crystal Resonator Frequen cy FXIN2 10 52 MHz

Crystal Loading Rat ing CL (xtal) 8.5 pF

Maximum Sustainable Dr ive Level 200 µW

Operating Drive Level 50 µW

C0 (for frequencies below 30MHz) 5 pF

C0 (for frequencies above 30MHz) 4 pF

ESR RS 30 Ω

Note: A de tailed crystal specification documen t is also available for this par t

Preliminary ABX0027M

Dual XO with 4 CMOS Outputs 10MHz to 52MHz

30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 4

PACKAGE INFORMATION

ORDERING INFORMATION

Abracon Corporation, reserves the rig ht to make changes in its products or specifications, or bo th at any time without notic e. The informat ion

furnished by Abracon is believed to be accurate and reliable. Howeve r, Abracon makes no gua rantee or warranty concerning the accuracy of said

information and shall not be responsible fo r any loss or damage of whatever nature resulting from the use of, or reliance upon this p roduct.

LIFE SUPPORT POLICY : Abracon’s products are not authorized for use as critical components in life support devices or systems without the express

written approval o f the President of Abracon C orporation.

For part ordering, please contact our Sales Department:

30332 Esperanza., R ancho Santa Margarita, Ca 92688

Ph: 949-546-8000 Fax: 949-546-8001

PART NUMBER

The order number for this device is a combination of the following:

Device number, Package t ype and Operating temperature range

ABX0027M S C

Order Number Marking Package Option

ABX0027M SC ABX0027M SC SOIC - Tube

ABX0027M SC-T ABX0027M SC SOIC - Tape and Reel

PART NUMBER

TEMPERATURE

C=COMMERCIAL

I=INDUSTRIAL

PACKAGE TYPE

S=SOIC

14 PIN Narrow SOIC ( mm )

SOIC

Symbol Min. Max.

A 1.35 1.75

A1 0.10 0.25

B 0.33 0.51

C 0.19 0.25

D 9.80 10.00

E 3.80 4.00

H 5.80 6.20

L 0.40 1.27

e 1.27 BSC