MK3200SITR - IDT, Integrated Device Technology Inc

DATASHEET

32.768 KHZ CLOCK OSCILLATOR MK3200

IDT™

32.768 KHZ CLOCK OSCILLATOR 1

MK3200 REV F 122109

Description

The MK3200 is IDT’s lowest cost, low power clock oscillator

that generates a low power 32.768 kHz output from an

inexpensive 32.768 kHz crystal. This part includes a power

down pin and allows you to tri state the output clock for

in-circuit testing.

IDT manufactures the largest variety of clock synthesizers

for all applications. If more clock outputs are needed,

including MHz frequencies, see the MK32xx family of parts.

Consult IDT to eliminate VCXOs, crystals and oscillators

from your board.

Features

•Packaged in 8-pin SOIC or 8-pin MSOP (3.00 mm body)

•8-pin MSOP available in Pb (lead) free package

•Operates from 2.5 V to 5 V

•Consumes only 3.5 µA in normal operation

•Accepts an inexpensive 32.768 kHz crystal input

•Offers power down mode

•Includes an Output Enable pin to tri state the output for

in-circuit testing

•Advanced, low power, sub-micron CMOS process

•For other 32.768 kHz-based clocks with MHz outputs,

please consult IDT

•Industrial temperature version available

NOTE: EOL for non-green parts to occur on 5/13/10

per PDN U-09-01

Block Diagram

Crystal

Oscillator 32.768 kHz

Clock

VDD

GND

32.768 kHz

Crystal

Power Down

MK3200

32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR

IDT™

32.768 KHZ CLOCK OSCILLATOR 2

MK3200 REV F 122109

Pin Assignment Power Down Select Table

Output Enable Select Table

0 = connect directly to GND.

1 = connect directly to VDD.

Pin Descriptions

VDD

GND

32.768k

X21

8-pin (150 mil) SOIC or

8-pin MSOP (3.00 mm body)

PD 32.768k Oscillator

0 On On

1Low Off

OE 32.768k Oscillator

0 Tri state (Hi-Z) On

1On On

Number

Name

Type Pin Description

1X1 Input Crystal connection. Connect to a 32.768 kHz crystal.

2 VDD Power Connect to +3.3 V.

3 GND Power Connect to ground.

4 32.768k Input 32.768 kHz clock output.

5 OE Output Output Enable.

6 PD Input Power down pin. Turns off entire chip when high.

7 GND Input Connect to ground.

8 X2 Output Crystal connection. Connect to a 32.768 kHz crystal.

MK3200

32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR

IDT™

32.768 KHZ CLOCK OSCILLATOR 3

MK3200 REV F 122109

External Components

Series Termination Resistor

Clock output traces over one inch should use series

termination. To series terminate a 50Ω trace (a commonly

used trace impedance), place a 33Ω resistor in series with

the clock line, as close to the clock output pin as possible.

The nominal impedance of the clock output is 20Ω.

Decoupling Capacitor

As with any high-performance mixed-signal IC, the MK3200

must be isolated from system power supply noise to perform

optimally.

A decoupling capacitor of 0.01µF must be connected

between VDD and the PCB ground plane.

PCB Layout Recommendations

For optimum device performance and lowest output phase

noise, the following guidelines should be observed.

1) The 0.01µF decoupling capacitor should be mounted on

the component side of the board as close to the VDD pin as

possible. No vias should be used between the decoupling

capacitor and VDD pin. The PCB trace to VDD pin should

be kept as short as possible, as should the PCB trace to the

ground via. Distance of the ferrite bead and bulk decoupling

from the device is less critical.

2) To minimize EMI, the 33Ω series termination resistor (if

needed) should be placed close to the clock output.

3) An optimum layout is one with all components on the

same side of the board, minimizing vias through other signal

layers. Other signal traces should be routed away from the

MK3200. This includes signal traces just underneath the

device, or on layers adjacent to the ground plane layer used

by the device.

4) The input crystal must be connected as close to the chip

as possible. The input crystal should be a parallel mode

crystal with a 12 pF load capacitance.

MK3200

32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR

IDT™

32.768 KHZ CLOCK OSCILLATOR 4

MK3200 REV F 122109

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the MK3200. These ratings, which are

standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these

or any other conditions above those indicated in the operational sections of the specifications is not implied.

Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical

parameters are guaranteed only over the recommended operating temperature range.

Recommended Operation Conditions

DC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature -40 to +85°C

Parameter Condition Min. Typ. Max. Units

Supply Voltage, VDD Referenced to GND 7 V

Inputs Referenced to GND -0.5 VDD+ 0.5 V

Clock Outputs Referenced to GND -0.5 VDD+ 0.5 V

Storage Temperature -65 150 °C

Soldering Temperature Max 10 seconds 260 °C

Junction Temperature 125 °C

Parameter Min. Typ. Max. Units

Ambient Operating Temperature -40 +85 °C

Power Supply Voltage (measured in respect to GND) +3.15 +3.3 +3.45 V

Parameter Symbol Conditions Min. Typ. Max. Units

Operating Voltage VDD 2.375 5.250 V

Supply Current IDD No load, OE=1 3.5 µA

PD = 0 3.5 µA

Output High Voltage

(CMOS level)

VOH IOH = -1.5 mA VDD-0.4 V

Output High Voltage VOH IOH = -3 mA 2.4 V

Output Low Voltage VOL IOL = 3mA 0.4 V

Short Circuit Current IOS ±6 mA

MK3200

32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR

IDT™

32.768 KHZ CLOCK OSCILLATOR 5

MK3200 REV F 122109

AC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature -40 to +85° C

Thermal Characteristics (8SOIC)

Thermal Characteristics (8MSOP)

Parameter Symbol Conditions Min. Typ. Max. Units

Input Frequency FIN 32.768 kHz

Output Rise Time tOR 20% to 80%, Note 1 8 ns

Output Fall Time tOF 80% to 20%, Note 1 8 ns

Duty Cycle at VDD/2 40 50 60 %

Input Crystal Accuracy 0 ±30 ppm

Parameter Symbol Conditions Min. Typ. Max. Units

Thermal Resistance Junction to

Ambient

θJA Still air 135 °C/W

θJA 1 m/s air flow 93 °C/W

θJA 3 m/s air flow 78 °C/W

Thermal Resistance Junction to Case θJC 60 °C/W

Parameter Symbol Conditions Min. Typ. Max. Units

Thermal Resistance Junction to

Ambient

θJA Still air 95 °C/W

Thermal Resistance Junction to Case θJC 48 °C/W

MK3200

32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR

IDT™

32.768 KHZ CLOCK OSCILLATOR 6

MK3200 REV F 122109

Package Outline and Package Dimensions (8-pin MSOP, 3.00 mm Body)

Package dimensions are kept current with JEDEC Publication No. 95

INDEX

AREA

1 2

E1 E

SEATING

PLANE

- C -

aaa C

*For reference only. Controlling dimensions in mm.

Millimeters Inches*

Symbol Min Max Min Max

A--1.10--0.043

A1 0 0.15 0 0.006

A2 0.79 0.97 0.031 0.038

b 0.22 0.38 0.008 0.015

C 0.08 0.23 0.003 0.009

D 3.00 BASIC 0.118 BASIC

E 4.90 BASIC 0.193 BASIC

E1 3.00 BASIC 0.118 BASIC

e 0.65 Basic 0.0256 Basic

L 0.40 0.80 0.016 0.032

α0°8°0°8°

aaa - 0.10 - 0.004

MK3200

32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR

IDT™

32.768 KHZ CLOCK OSCILLATOR 7

MK3200 REV F 122109

Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Body)

Package dimensions are kept current with JEDEC Publication No. 95

Ordering Information

*NOTE: EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes

no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No

other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications

such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not

recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT

does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.

Part / Order Number Marking Shipping Packaging Package Temperature

MK3200S* MK3200S Tubes 8-pin SOIC 0 to +70° C

MK3200STR* MK3200S Tape and Reel 8-pin SOIC 0 to +70° C

MK3200SLF MK3200SL Tubes 8-pin SOIC 0 to +70° C

MK3200SLFTR MK3200SL Tape and Reel 8-pin SOIC 0 to +70° C

MK3200SI* MK3200SI Tubes 8-pin SOIC -40 to +85° C

MK3200SITR* MK3200SI Tape and Reel 8-pin SOIC -40 to +85° C

MK3200G* 3200G Tubes 8-pin MSOP 0 to +70° C

MK3200GT* 3200G Tape and Reel 8-pin MSOP 0 to +70° C

MK3200GLF 3200GL Tubes 8-pin MSOP 0 to +70° C

MK3200GLFT 3200GL Tape and Reel 8-pin MSOP 0 to +70° C

INDEX

AREA

1 2

SEATING

PLANE

- C -

.10 (.004) C

h x 45

Millimeters Inches

Symbol Min Max Min Max

A 1.35 1.75 .0532 .0688

A1 0.10 0.25 .0040 .0098

B 0.330.51.013.020

C 0.19 0.25 .0075 .0098

D 4.80 5.00 .1890 .1968

E 3.80 4.00 .1497 .1574

e 1.27 BASIC 0.050 BASIC

H 5.80 6.20 .2284 .2440

h 0.250.50.010.020

L 0.401.27.0.050

α0°8°0°8°

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trademarks used to identify products or services of their respective owners.

Printed in USA

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Integrated Device Technology, Inc.

www.idt.com

For Sales

800-345-7015

408-284-8200

Fax: 408-284-2775

For Tech Support

www.idt.com/go/clockhelp

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MK3200

32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR