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EM7604 Datasheet(PDF) 1 Page - EM Microelectronic - MARIN SA

Part # EM7604
Description  Low Power Crystal Oscillator 32.768 kHz
PDF  4 Pages
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Manufacturer  EMMICRO [EM Microelectronic - MARIN SA]
Direct Link  http://www.emmicroelectronic.com
Logo EMMICRO - EM Microelectronic - MARIN SA

EM7604 Datasheet(HTML) 1 Page - EM Microelectronic - MARIN SA

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EM7604
Copyright
© 2006, EM Microelectronic-Marin SA
03/06 – rev.A
1
www.emmicroelectronic.com
Low Power Crystal Oscillator 32.768 kHz
Description
The EM7604 is an advanced low power CMOS circuit
intended to be used together with a 32.768 kHz tuning fork
crystal as a low frequency clock oscillator.
Except the crystal, no other external components are
required.
In order to achieve a high frequency accuracy, the matched
crystals should have a ± 20ppm tolerance or tighter.
Very low power consumption, as low as 250nA, is
guaranteed over a very wide supply voltage and
temperature ranges.
Offered in a small SOT23-6 package, the EM7604 is a
completely lead free product.
Applications
General purpose clock generator for digital systems
Clock drivers for Real Time Clocks
Timekeeping in network servers and computers
Electricity, gas and water metering
Portable field communication
Mobile phone
Solution for problems with embedded quartz oscillators
Pin Assignment
Features
Very low power consumption: typ. 250nA
On chip integrated oscillation capacitor: CL=8pF
Matched low cost SMD quartz available from Micro Crystal
Compatibility with crystals having high series resistance
Very tight frequency tolerance
Excellent oscillator stability: 0.2ppm/V
Wide supply voltage range: 1.2V to 5.5V
Operating temperature range: -40°C to +125°C
Small SOT23-6 package
100% lead free, RoHS – compliant
Block Diagram
OSCILLATOR
OUT
OE
VDD
VSS
OUTPUT
CONTROL
REGULATION
1
VSS
EM7604
2
3
OSCOUT
OSCIN
6
5
4
OE
VDD
OUT
SOT23
Pin
Connection
Assignment
1
OSCOUT
Oscillator Output
2
VSS
Negative Supply
Voltage
3
OSCIN
Oscillator Input
4
OE
Output Enable
5
VDD
Positive Supply
Voltage
6
OUT
Frequency Output
EM MICROELECTRONIC - MARIN SA


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