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EM MICROELECTRONIC - MARIN SA
EM7602 Low Power Clock Oscillator 32768 Hz
The World's Smallest Thermo-Compensated Oscillator
Dimensions
Package:
8.0 1.2 1.2 1.2
Recommended Solder Pad:
3.0 3.8 1.8 1.6 1.0 top view 1.2 1.8 5.0 1.8
1
bottom view
2 4 3
3.6
2.4
max 1.75 side view
All dimensions in mm typical
Pin Description: 1 = Output enable or NC 2 = Ground 3 = Frequency Output 4 = VDD
Description
KEY FEATURES
Temperature compensation Small SMD ceramic package Low power consumption of 6A Tri state output
EM7602 is a low power, low frequency crystal oscillator, with a three times better thermal drift than any conventional tuning fork crystal. It consists of a torsional tuning fork crystal and a CMOS integrated circuit, both assembled in the same package. It is ideal for applications requiring a high timekeeping accuracy over full temperature range. The oscillator are supplied in trays (91 oscillators per tray). For pick-and-place equipment, the parts are available in 16mm tapes: 7" (178 mm) reel with 1000 oscillators 10" (254 mm) reel with 2000 oscillators 13" (330 mm) reel with 4000 oscillators
& BENEFITS
u u u u u u Save space and components No more matching of quartz with IC Easy PCB design No more trouble with stray capacitors High shock and vibration resistance No need for external trimming components
Electrical Characteristics at 25C
Output Frequency Frequency tolerance (note 1) Supply voltage Current Consumption (typ/max) (note 2) Duty cycle (min/max) Output voltage (high) (note 3) Output voltage (low) (note 4) Output rise time (max) (note 5) Output fall time (max) (note 5) Start up time Voltage coefficient Turnover temperature (typ) Temperature coefficient (typ) Frequency stability (typ) 0C to +50C -20C to +70C -40C to +85C
Note 1: Tighter tolerance on request Note 2: VDD = 3.3V, no load Note 3: IOH = -0.5mA
F F/F VDD IDD VOH VOL tr tf tstart T0 F/F
Typical Applications
Clock drivers for Real Time Clocks Timekeeping in network servers and computers Data logger Electricity, gas and water metering Portable field communication Automotive dashboard High-end mobile phones
32.768 30 2.3 - 3.6 6/10 49/51 VDD - 0.4 0.4 100 100 1 1 20 -0.012 0 to -10 0 to -30 0 to -50
kHz ppm V A % V V ns ns s ppm/V C ppm/C ppm ppm ppm
Note 4: IOL = 0.5mA Note 5: CL = 15pF, 10% to 90%
Copyright 2003, EM Microelectronic-Marin SA Subject to change without notice
Rev. C, 07/2003
Phone: +41.32.755-5111, Fax: +41.32.755-5403 www.emmicroelectronic.com info@emmicroelectronic.com
4.2
EM7602
Output Wave Form:
VDD VOH
VOL 0 tr tf
Environmental Characteristics:
Storage temp. range Industrial operating temp. range Shock resistance F/F Vibration resistance F/F
Conditions Max. Dev. -55C to +125C -40C to +85C 5000 g, 0.3 ms, 1/2 sine 5 ppm 20 g / 10-2000 Hz 5 ppm
Ordering Information, Terminations and Processing:
Part Nb EM7602V1SM4D EM7602V1SM4B
Termination Delivery Form For SMD mounting Tray (91 pieces) Au (gold) flashed pads Tape & Reel (min. 1000 pieces)
Processing is by reflow soldering at 260C / 20 s max. Note: Instead of Au (gold) flashed pads, Sn (tin) plated pads are also available for SMD mounting, subject to availability and minimum order quantity. Please contact EM Microelectronic for availability of Sn (tin) plated pads and refer to EM7602V2 (version 2). For samples, only EM7602V1 is available at all times.
Frequency Temperature Characteristics:
20.0 0.0 -20.0 -40.0
DF [ppm]
-60.0 -80.0 -100.0 -120.0 -140.0 -160.0 -180.0 -60 -40 -20 0 20 40 60 80 100
T [C]
Conventional Tuning Fork
EM7602 Oscillator
Copyright 2003, EM Microelectronic-Marin SA Subject to change without notice
Rev. C, 07/2003
Phone: +41.32.755-5111, Fax: +41.32.755-5403 www.emmicroelectronic.com info@emmicroelectronic.com

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