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 = V
DD
Description
KEY FEATURES
Temperature compensation
Small SMD ceramic package
Low power consumption of 6µA
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
ü
ü
ü
ü
ü
ü
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 25°C
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)
0°C to +50°C
-20°C to +70°C
-40°C to +85°C
Note 1: Tighter tolerance on request
Note 2: V
DD
= 3.3V, no load
Note 3: I
OH
= -0.5mA
F
∆F/F
V
DD
I
DD
V
OH
V
OL
t
r
t
f
t
start
T
0
β
∆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
V
DD
- 0.4
0.4
100
100
1
±1
20
-0.012
0 to -10
0 to -30
0 to -50
kHz
ppm
V
µA
%
V
V
ns
ns
s
ppm/V
°C
ppm/°C²
ppm
ppm
ppm
Note 4: I
OL
= 0.5mA
Note 5: C
L
= 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
EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
