EM7602

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

Low Power Clock Oscillator 32768 Hz

The World’s Smallest Thermo-Compensated Oscillator

Dimensions

All dimensions in mm typical

Package:

Recommended Solder Pad:

Pin Description:

1 = Output enable or NC

2 = Ground

3 = Frequency Output

4 = V

DD

3

2

1

4

1.2

8.0

1.2

2.4

max

1.75

3.0

3.8

1.8

1.8

5.0

1.8

bottom view

top view

side view

KEY FEATURES

Temperature compensation

Small SMD ceramic package

Low power consumption of 6µA

Tri state output

& BENEFITS

ü Save space and components

ü No more matching of quartz with IC

ü Easy PCB design

ü No more trouble with stray capacitors

ü High shock and vibration resistance

ü No need for external trimming

components

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

Description

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

Electrical Characteristics at 25°C

Output Frequency

F

32.768

kHz

Frequency tolerance

(note 1)

∆F/F

±30

ppm

Supply voltage

2.3 – 3.6

V

6/10

µA

Duty cycle (min/max)

49/51

%

Output voltage (high)

(note 3)

V

Output voltage (low)

(note 4)

0.4

V

Output rise time (max)

(note 5)

100

ns

Output fall time (max)

(note 5)

100

ns

Start up time

1s

Voltage coefficient

±1

ppm/V

Turnover temperature (typ)

20

°C

Temperature coefficient (typ)

β

-0.012

ppm/°C²

Frequency stability (typ)

0°C to +50°C

-20°C to +70°C

-40°C to +85°C

∆F/F

0 to -10

0 to -30

0 to -50

ppm

ppm

ppm

Note 1: Tighter tolerance on request