MK3200GLF

DATASHEET MK3200 32.768 KHZ CLOCK OSCILLATOR Description Features 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. Packaged in 8-pin SOIC or 8-pin MSOP (3.00 mm body) 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 Block Diagram VDD Power Down X1 Crystal Oscillator 32.768 kHz Crystal 32.768 kHz Clock X2 GND IDT® 32.768 KHZ CLOCK OSCILLATOR OE 1 MK3200 REV H 073012 MK3200 32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR Pin Assignment Power Down Select Table X1 1 8 X2 VDD 2 7 GND GND 3 6 PD 32. 768k 4 5 OE PD 0 1 32.768k On Low Oscillator On Off Output Enable Select Table 8-pin (150 mil) SOIC or 8-pin MSOP (3.00 mm body) OE 0 1 32.768k Tri state (Hi-Z) On Oscillator On On 0 = connect directly to GND. 1 = connect directly to VDD. Pin Descriptions Pin Number 1 2 3 4 5 6 7 8 Pin Name X1 VDD GND 32.768k OE PD GND X2 IDT® 32.768 KHZ CLOCK OSCILLATOR Pin Type Input Power Power Input Output Input Input Output Pin Description Crystal connection. Connect to a 32.768 kHz crystal. Connect to +3.3 V. Connect to ground. 32.768 kHz clock output. Output Enable. Power down pin. Turns off entire chip when high. Connect to ground. Crystal connection. Connect to a 32.768 kHz crystal. 2 MK3200 REV H 073012 MK3200 32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR 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. IDT® 32.768 KHZ CLOCK OSCILLATOR 3 MK3200 REV H 073012 MK3200 32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR 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. Parameter Condition Min. Supply Voltage, VDD Referenced to GND Inputs Referenced to GND Clock Outputs Referenced to GND Storage Temperature Soldering Temperature Typ. Max. Units 7 V -0.5 VDD+ 0.5 V -0.5 VDD+ 0.5 V -65 150 °C 260 °C 125 °C Max 10 seconds Junction Temperature Recommended Operation Conditions Parameter Min. Ambient Operating Temperature Typ. Max. Units +85 °C +3.45 V -40 Power Supply Voltage (measured in respect to GND) +3.15 +3.3 DC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature -40 to +85° C Parameter Symbol Conditions Min. Typ. Units 5.250 V Operating Voltage VDD Supply Current IDD No load, OE=1 3.5 μA 3.5 Output High Voltage (CMOS level) VOH PD = 0 IOH = -1.5 mA VDD-0.4 μA V Output High Voltage VOH IOH = -3 mA 2.4 V Output Low Voltage VOL IOL = 3mA Short Circuit Current IOS IDT® 32.768 KHZ CLOCK OSCILLATOR 2.375 Max. 0.4 ±6 4 V mA MK3200 REV H 073012 MK3200 32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR AC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature -40 to +85° C Parameter Symbol Input Frequency FIN Output Rise Time tOR Output Fall Time tOF Duty Cycle Conditions Min. Typ. Max. Units 32.768 kHz 20% to 80%, Note 1 8 ns 80% to 20%, Note 1 8 ns at VDD/2 40 50 60 % 0 ±30 ppm Input Crystal Accuracy Thermal Characteristics (8SOIC) Parameter Symbol Thermal Resistance Junction to Ambient Conditions Min. Max. Units θ JA Still air 135 ° C/W θ JA 1 m/s air flow 93 ° C/W θ JA 3 m/s air flow 78 ° C/W 60 ° C/W θ JC Thermal Resistance Junction to Case Typ. Thermal Characteristics (8MSOP) Parameter Symbol Thermal Resistance Junction to Ambient θJA Thermal Resistance Junction to Case θJC IDT® 32.768 KHZ CLOCK OSCILLATOR Conditions Still air 5 Min. Typ. Max. Units 95 ° C/W 48 ° C/W MK3200 REV H 073012 MK3200 32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR Package Outline and Package Dimensions (8-pin MSOP, 3.00 mm Body) Package dimensions are kept current with JEDEC Publication No. 95 Millimeters 8 Symbol E1 A A1 A2 b C D E E1 e L α aaa E IN D E X AREA 1 2 D Min Max -1.10 0 0.15 0.79 0.97 0.22 0.38 0.08 0.23 3.00 BASIC 4.90 BASIC 3.00 BASIC 0.65 Basic 0.40 0.80 0° 8° 0.10 Inches* Min Max -0.043 0 0.006 0.031 0.038 0.008 0.015 0.003 0.009 0.118 BASIC 0.193 BASIC 0.118 BASIC 0.0256 Basic 0.016 0.032 0° 8° 0.004 *For reference only. Controlling dimensions in mm. A 2 A A 1 c -C e b S E A T IN G P LA N E L aaa IDT® 32.768 KHZ CLOCK OSCILLATOR C 6 MK3200 REV H 073012 MK3200 32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Body) Package dimensions are kept current with JEDEC Publication No. 95 Millimeters 8 Symbol E Min A A1 B C D E e H h L H INDEX AREA 1 2 D Max Min 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27 BASIC 5.80 6.20 0.25 0.50 0.40 1.27 α A Inches 0° Max .0532 .0688 .0040 .0098 .013 .020 .0075 .0098 .1890 .1968 .1497 .1574 0.050 BASIC .2284 .2440 .010 .020 .0 .050 8° 0° 8° h x 45 A1 C -Ce B SEATING PLANE L .10 (.004) C Ordering Information Part / Order Number Marking Shipping Packaging Package Temperature MK3200SLF MK3200SLFTR MK3200SILF MK3200SILFTR MK3200GLF MK3200GLFT MK3200SL MK3200SL MK3200IL MK3200IL 3200GL 3200GL Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin MSOP 8-pin MSOP 0 to +70° C 0 to +70° C -40 to +85° C -40 to +85° C 0 to +70° C 0 to +70° C 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. IDT® 32.768 KHZ CLOCK OSCILLATOR 7 MK3200 REV H 073012 MK3200 32.768 KHZ CLOCK OSCILLATOR 32 KHZ OSCILLATOR Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales For Tech Support 800-345-7015 408-284-8200 Fax: 408-284-2775 www.idt.com/go/clockhelp Corporate Headquarters Integrated Device Technology, Inc. www.idt.com © 2012 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. 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